New Jersey Board of Public Utilities v. Federal Energy Regulatory Commission , 744 F.3d 74 ( 2014 )


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  •                                        PRECEDENTIAL
    UNITED STATES COURT OF APPEALS
    FOR THE THIRD CIRCUIT
    Nos. 11-4245, 11-4405, 11-4486, 11-4487, 12-1085, 12-1086
    and 12-1764
    NEW JERSEY BOARD OF PUBLIC UTILITIES
    AND NEW JERSEY DIVISION OF RATE COUNSEL,
    Petitioners in Case No. 11-4245
    v.
    FEDERAL ENERGY REGULATORY COMMISSION,
    Respondent
    MARYLAND PUBLIC SERVICE COMMISSION,
    Petitioner in Case No. 11-4405
    v.
    FEDERAL ENERGY REGULATORY COMMISSION,
    Respondent
    PJM POWER PROVIDERS GROUP,
    Petitioner in Case No. 11-4486
    v.
    FEDERAL ENERGY REGULATORY COMMISSION,
    Respondent
    PSEG ENERGY RESOURCES & TRADE LLC,
    Petitioner in Case No. 11-4487
    v.
    FEDERAL ENERGY REGULATORY COMMISSION,
    Respondent
    OLD DOMINION ELECTRIC COOPERATIVE;
    AMERICAN PUBLIC POWER ASSOCIATION;
    NATIONAL RURAL ELECTRIC COOPERATIVE
    ASSOCIATION;
    NORTH CAROLINA ELECTRIC MEMBERSHIP
    CORPORATION;
    DELAWARE MUNICIPAL ELECTRIC CORPORATION
    AMERICAN MUNICIPAL POWER, INC.;
    2
    *SOUTHERN MARYLAND ELECTRIC COOPERATIVE,
    INC.,
    Petitioners in Case No. 12-1085
    v.
    FEDERAL ENERGY REGULATORY COMMISSION,
    Respondent
    * Pursuant to Clerk Order of 2/14/12.
    HESS CORPORATION,
    Petitioner in Case No. 12-1086
    v.
    FEDERAL ENERGY REGULATORY COMMISSION,
    Respondent
    OLD DOMINION ELECTRIC COOPERATIVE;
    AMERICAN MUNICIPAL POWER, INC.;
    NORTH CAROLINA ELECTRIC MEMBERSHIP CORP.;
    AMERICAN PUBLIC POWER ASSOCIATION;
    DELAWARE MUNICIPAL ELECTRIC CORP.; and
    3
    NATIONAL RURAL ELECTRIC COOPERATIVE
    ASSOCIATION,
    Petitioners in Case No. 12-1764
    v.
    FEDERAL ENERGY REGULATORY COMMISSION,
    Respondent
    Petition for Review of an Orders of the
    Federal Energy Regulatory Commission
    (FERC-1:135 FERC 61,022; FERC-1:137 FERC 61,145;
    FERC-1:FERC-ER11-2875-000; FERC-1:FERC-EL11-20-
    000; FERC-1:FERC-ER11-2875-001; FERC-1:138 FERC 61,
    194)
    Argued September 10, 2013
    Before: RENDELL, JORDAN and GREENAWAY, JR.,
    Circuit Judges
    (Opinion filed February 20, 2014)
    4
    Jennifer S. Hsia, Esquire
    Office of Attorney General of New Jersey
    Division of Law
    Richard J. Hughes Justice Complex
    25 Market Street
    Trenton, NJ 08625
    Alex Moreau, Esquire
    Office of Attorney General of New Jersey
    124 Halsey Street
    P. O. Box 45029
    Newark, NJ 07102
    Counsel for New Jersey Board of Public
    Utilities
    Stefanie A. Brand, Esquire
    Felicia Thomas-Fried, Esquire
    Office of Public Defender
    Division of the Ratepayer Advocate
    140 East Front Street, 4th Floor
    P. O. Box 003
    Trenton, NJ 08625
    Scott H. Strauss, Esquire (Argued)
    Jeffrey A. Schwarz, Esquire
    Spiegel & McDiarmid
    1333 New Hampshire Avenue, N.W.
    Washington, D.C. 20036
    Counsel for New Jersey Division of Rate
    Counsel
    5
    Harvey L. Reiter, Esquire
    Dennis Lane, Esquire (Argued)
    Adrienne E. Clair, Esquire
    Stinson Morrison & Hecker, LLP
    1775 Pennsylvania Avenue, N. W.
    Washington, D. C. 20006
    Counsel for Old Dominion Electric
    Cooperative; American Public Power
    Association; National Rural Electric
    Cooperative Association, Delaware
    Municipal Electric Corp; Southern
    Maryland Electric Cooperative Inc,
    American Municipal Power, Inc
    Larry F. Eisenstat, Esquire
    Crowell & Moring
    1001 Pennsylvania Avenue, N. W.
    Washington, D. C. 20004
    Counsel for CPV Power Development,
    Inc.
    Werner L. Margard, III, Esquire
    Office of Attorney General of Ohio
    Public Utilities Division
    180 East Broad Street
    Columbus, OH 43266
    Counsel for Public Utilities Commission
    of Ohio
    6
    Susanna Chu, Esquire (Argued)
    Randall L. Speck, Esquire
    Kaye Scholer
    901 15th Street, N.W.
    Washington, D. C. 20005
    Counsel for Maryland Public Service
    Commission
    Regina A. Iorii, Esquire
    Delaware Department of Justice
    820 North French Street
    Carvel Office Building, 6th Floor
    Wilmington, DE 19801
    Counsel for Delaware Public Service
    Commission
    Gregory T. D’Auria, I, Esquire
    Office Attorney General of Connecticut
    55 Elm Street
    P. O. Box 120 Hartford, CT 061606
    Counsel for Attorney General
    Connecticut
    Stuart A. Caplan, Esquire
    Dentons US
    1221 Avenue of the Americas
    New York, NY 10020
    Counsel for Hess Corp
    7
    Gary J. Newell, Esquire
    Jennings Strouss
    1350 I Street, N. W.
    Suite 810
    Washington, D. C. 20005
    Counsel for American Municipal Power,
    Inc.
    Sandra E. Rizzo, Esquire
    Charles H. Shoneman, Esquire
    Bracewell & Guiliani
    2000 K Street, N. W.
    Suite 500
    Washington, D. C. 20006
    Counsel for PPL Electric Utilities
    Corporation; PPL Energy Plus, LLC;
    PPL Brunner Island; PPL Holtwood,
    LLC; PPL Martins Creek; PPL Montour,
    LLC; PPL Susquehanna, LLC; PPL New
    Jersey Solar, LLC; PPL New Jersey
    Biogas, LLC; PPL Renewable Energy,
    LLC; Lower Mount Bethel Energy, LLC
    8
    Paula M. Carnody, Esquire
    William F. Fields, Esquire
    Maryland Peoples Counsel
    6 St. Paul Street, Suite 2102
    Baltimore, MD 21202
    Counsel for Maryland Office of Peoples
    Counsel
    Christopher R. Jones, Esquire
    Troutman Sanders
    401 9th Street, N.W.
    Suite 1000
    Washington, D. C. 20004
    Counsel for Dominion Resources
    Services
    Denise C. Goulet, Esquire
    Miller, Balis & O’Neil
    1015 15th Street, N. W.
    Washington, D. C. 20005
    Counsel for North Carolina Electric
    Membership Corporation
    9
    Robert A. Weishaar, Jr., Esquire
    McNees, Wallace & Nurick
    777 North Capitol Street, N. E.
    Suite 401
    Washington, D. C. 20002
    Counsel for PJM Industrial Customer
    Coalition
    Carol Banta, Esquire (Argued)
    Holly E. Cafer, Esquire (Argued)
    Federal Energy Regulatory Commission
    888 1st Street, N. E.
    Washington, D. C. 20426
    Counsel for Federal Energy Regulatory
    Commission
    Ashley C. Parrish, Esquire
    David G. Tewksbury, Esquire
    King & Spalding
    11700 Pennsylvania Avenue, N. W.
    Suite 200
    Washington, D. C. 20006
    Counsel for Electric Power Supply
    Association; Calpine Corporation
    10
    Paul M. Flynn, Esquire (Argued)
    Wright & Talisman
    1200 G Street, N. W.
    Suite 600
    Washington, D. C. 20005
    Counsel for PJM Interconnections
    Adam M. Conrad, Esquire
    King & Spalding
    100 North Tryon Street
    Suite 3900
    Charlotte, NC 28202
    Counsel for LS Power Associates, LP
    John N. Estes, III, Esquire (Argued)
    John L. Shepherd, Jr., Esquire (Argued)
    Paul F. Wight, Esquire
    Skadden, Arps, Slate, Meagher & Flom
    1440 New York Avenue, N.W.
    Washington, DC 20005
    Counsel for PJM Power Providers
    Group; Exelon Corporation
    11
    Richard P. Bress, Esquire
    Andrew D. Prins, Esquire
    Latham & Watkins
    555 11th Street, N.W.
    Suite 1000
    Washington, DC 20004
    Counsel for FirstEnergy Solutions
    Corporation
    Vilna W. Gaston, Esquire
    Tamara L. Linde, Esquire
    PSEG Corporation
    Room T5G
    80 Park Plaza
    Newark, NJ 07101-0570
    Counsel for PSEG Energy Resources &
    Trade, LLC
    Robert C. Fallon, Esquire
    Jonathan W. Gottlieb, Esquire
    Stinson Leonard Street
    1775 Pennsylvania Avenue, N.W.
    Suite 800
    Washington, DC 20006
    Counsel for Commonwealth Chesapeake
    Corp
    12
    OPINION
    RENDELL, Circuit Judge:
    In what is a relatively unusual task for our court, we
    are asked to review a ruling of the Federal Energy Regulatory
    Commission (“FERC”) approving a revised tariff submitted
    by PJM Interconnection, LLC, that effectively changes
    several aspects of PJM’s tariff as approved in a prior FERC
    order. FERC is the independent federal agency tasked under
    the Federal Power Act (the “FPA”) with, among other things,
    ensuring that rates charged by public utilities for the
    transmission and sale of energy in interstate commerce, and
    the “rules and regulations affecting or pertaining to such
    rates”, are “just and reasonable.” 16 U.S.C. § 824d.
    In 2006, FERC issued an order (the “2006 Order”)
    approving a new tariff—a set of rules and policies governing
    the interstate sale of electricity and electric capacity—for the
    PJM market, a vast region covering thirteen states and the
    District of Columbia. The terms and policies embodied in the
    2006 Order—the result of an extensively negotiated
    settlement between power providers, utility companies, state
    and local authorities and other stakeholders in the region—
    sought to ensure the existence of sufficient power generation
    facilities to meet the needs of the PJM market. To this end,
    the order required that load serving entities (LSEs) in the PJM
    market procure a certain amount of energy capacity—that is,
    additional generation resources that the market may access
    during times of peak load. The 2006 Order also contained
    rules designed to curb the ability of market participants to
    distort wholesale prices through the exercise of market power.
    13
    A chief means to that end was the rule that offers for the sale
    of capacity in the PJM markets at artificially low prices
    would, with some notable exceptions, be required to be
    “mitigated”, or raised to a competitive level, based on their
    costs.
    Beginning in April 2011, FERC issued three orders
    (the “2011 Orders”) that altered the terms of the 2006 Order
    in several ways, some substantial. Among other things, the
    2011 Orders eliminated an exemption from mitigation for
    resources built pursuant to a state mandate. In addition, the
    2011 Orders eliminated a provision that had guaranteed that
    LSEs that owned their own generation resources, or had
    procured capacity through bilateral contracts, would be able
    to use this “self-supply” to satisfy their own capacity
    obligations. The 2011 Orders also changed several factors
    used in determining whether a particular offer was subject to
    mitigation.
    As discussed infra, multiple parties have timely filed
    Petitions for Review of the 2011 Orders. 1 Petitioners New
    1
    We have jurisdiction to review FERC’s orders under FPA §
    313(b), 16 U.S.C. § 825l(b), which provides that, “[a]ny party
    to a proceeding under this chapter aggrieved by an order
    issued by the Commission in such proceeding may obtain a
    review of such order in the United States Court of Appeals for
    any circuit wherein the licensee or public utility to which the
    order relates is located or has its principal place of business,
    or in the United States Court of Appeals for the District of
    Columbia, by filing in such court, within sixty days after the
    order of the Commission upon the application for rehearing, a
    written petition praying that the order of the Commission be
    modified or set aside in whole or in part.” 16 U.S.C. §
    14
    Jersey and Maryland contend that the 2011 Orders amount to
    direct regulation of power facilities in violation of the FPA,
    and that FERC acted arbitrarily and capriciously in
    eliminating the exemption from mitigation for state-mandated
    resources. Similarly, several municipal and cooperative
    electric utilities challenge FERC’s elimination of the
    assurance that LSEs could use their own self-supply to satisfy
    their capacity obligations. Finally, various energy providers
    take issue with new rules governing the calculation of a
    resource’s net cost of new entry, which is used in determining
    whether an offer for the sale of capacity will be mitigated,
    and with FERC’s determination that a new generation
    resource must clear only one capacity auction in order to
    avoid further mitigation.       We have considered these
    arguments and find them without merit. Accordingly, we
    deny the petitions for review.
    I.
    At the time the FPA was passed in 1935, “most
    electricity was sold by vertically integrated utilities that had
    constructed their own power plants, transmission lines, and
    local delivery systems.        Although there were some
    interconnections among utilities, most operated as separate,
    local monopolies subject to state or local regulation.” New
    825l(b). New Jersey, Maryland, Hess Corporation, and Load
    Petitioners filed petitions for review in this Court. Cross-
    Petitioners PJM Power Providers Group and PSEG Energy
    Resources & Trade, LLC (collectively, “P3”) filed petitions
    for review in the D.C. Circuit. On December 8, 2011, the
    U.S. Judicial Panel on Multidistrict Litigation consolidated all
    petitions for review in this Court.
    15
    York v. FERC, 
    535 U.S. 1
    , 5 (2002). In 1927 the Supreme
    Court held in Public Utilities Commission v. Attleboro Steam
    & Electric Co., 
    273 U.S. 83
    (1927), that only Congress, and
    not the states, could regulate the sale of electrical power in
    interstate commerce. To meet this charge, Congress enacted
    the FPA, which authorized federal regulation of the interstate
    sale of electricity, and created a new independent agency, the
    Federal Power Commission (precursor to FERC), to
    administer the statute. New 
    York, 535 U.S. at 6-7
    . Section
    201 of the FPA defined the Commission’s jurisdiction as “the
    transmission of electric energy in interstate commerce and the
    sale of such energy at wholesale in interstate commerce . . . .”
    16 U.S.C § 824(a). The statute gave the Commission
    regulatory power over “all facilities for such transmission or
    sale of electric energy”, but withheld jurisdiction over
    “facilities used for the generation of electric energy” which
    remained subject to state and local regulation. § 824(b)(1).
    Section 205 tasked the Commission with ensuring that “[a]ll
    rates and charges made, demanded or received by any public
    utility for or in connection with the transmission or sale of
    electric energy . . . and all rules and regulations affecting or
    pertaining to such rates or charges shall be just and
    reasonable,” and prohibited utilities engaged in the
    transmission or sale of energy in interstate commerce from
    “mak[ing] or grant[ing] any undue preference or advantage to
    any person or subject[ing] any person to any undue prejudice
    or disadvantage, or [] maintain[ing] any unreasonable
    difference in rates, charges, service, facilities, or in any other
    respect, either as between localities or as between classes of
    service.” § 824d. Section 206 gave the Commission the
    power to correct rates, or “any rule, regulation, practice, or
    contract affecting such rate[s]” that it deemed unjust and
    unreasonable. § 824e(a).
    16
    In the nearly eight decades since the FPA was enacted,
    technological advances have revolutionized the way electric
    power is generated and transmitted. Transmission grids are
    now largely interconnected, which means that “any electricity
    that enters the grid immediately becomes a part of a vast pool
    of energy that is constantly moving in interstate commerce.”
    New 
    York, 535 U.S. at 7
    . In addition to making the transfer of
    electricity over long distances more efficient, the
    development of a national, interconnected grid has made it
    possible for a generator in one state to serve customers in
    another, thus opening the door to potential competition that
    did not previously exist. 
    Id. at 8.
    Public utilities still retain
    ownership over transmission lines, however, and so, until
    recently, had the ability to stifle competition from new
    generators by “refus[ing] to deliver energy produced by
    competitors or [by] deliver[ing] competitors’ power on terms
    and conditions less favorable than those they apply to their
    own transmissions.” 
    Id. at 8-9.
    Congress changed this with
    two pieces of legislation—the Public Utility Regulatory
    Policies Act of 1978 (“PURPA”), Pub. L. 95-617, and the
    Energy Policy Act of 1992, Pub. L. 102-486. Respectively,
    those two statutes obligated traditional utilities to purchase
    electricity from “nontraditional facilities,” and authorized
    FERC to order utilities to provide transmission services to
    independent generators. New 
    York, 535 U.S. at 9
    . In 1996,
    FERC issued a landmark ruling requiring the “functional
    unbundling” of wholesale generation and transmission
    services, and requiring utilities to provide open, non-
    discriminatory access to their transmission facilities. 2
    2
    Promoting Wholesale Competition Through Open Access
    Non-discriminatory Transmission Services by Public Utilities
    17
    In response to the changing conditions in the energy
    market in recent years, FERC has changed its approach to
    regulating rates. Rather than setting rates for each public
    utility, FERC now seeks to ensure that market-based rates are
    “just and reasonable” largely by overseeing the integrity of
    the interstate energy markets. See Consol. Edison Co. of
    N.Y., Inc. v. FERC, 
    347 F.3d 964
    , 967 (D.C. Cir. 2003) (“The
    Federal Energy Regulatory Commission oversees this market-
    based system pursuant to the Federal Power Act”); La.
    Energy & Power Auth. v. FERC, 
    141 F.3d 364
    , 365 (D.C. Cir.
    1998) (“[T]he Commission approves applications to sell
    electric energy at market-based rates only if the seller and its
    affiliates do not have, or adequately have mitigated, market
    power in the generation and transmission of such energy, and
    cannot erect other barriers
    to entry by potential competitors.”). 3
    and Recovery of Stranded Costs by Public Utilities, Order
    No. 888, FERC Stats. & Regs. Preambles ¶ 31,036 (1996),
    aff’d in relevant part, Transmission Access Policy Study Grp.
    v. FERC, 
    225 F.3d 667
    (D.C. Cir. 2000), aff’d sub nom, New
    York v. FERC, 
    535 U.S. 1
    (2002).
    3
    See also Order Directing Submission of Information with
    Respect to Internal Processes for Reporting Trading Data,
    103 FERC P61,089, ¶ 11 (April 30, 2003) (“This Commission
    has a statutory obligation to ensure the justness and
    reasonableness of rates for wholesale electric power, . . . . In
    this regard, . . . the Commission’s vision has been to ensure
    the delivery of dependable, affordable energy through
    reliance on sustained competitive markets rather than through
    a rigid adherence to strict-cost-of service principles.”).
    18
    II.
    A.     PJM Interconnection
    Though the grid has become nationally interconnected
    and competition among generators has increased,
    transmission lines for a particular geographic area are still
    typically owned by a single utility company. To manage the
    complexities of the grid, FERC has encouraged the
    development of “regional transmission organizations,” or
    “RTOs,” which are voluntary associations of the owners of
    transmission lines. Ill. Commerce Comm’n v. FERC, 
    576 F.3d 470
    , 473 (7th Cir. 2009). RTOs were promoted by
    FERC to increase competition among energy providers by
    ensuring that owners of transmission lines provide access in a
    nondiscriminatory manner.       Midwest ISO Transmission
    Owners v. FERC, 
    373 F.3d 1361
    , 1364 (D.C. Cir. 2004).
    Each RTO acts as the system operator in its region, managing
    the transmission grid on behalf of transmission-owning
    member utilities. See NRG Power Mktg., LLC v. Me. Pub.
    Utils. Comm’n, 
    558 U.S. 165
    , 169 n.1 (2010). The parties do
    not dispute that RTOs are “public utilities” under the FPA,
    and are thus subject to FERC’s regulation.
    PJM Interconnection (“PJM”) is the RTO that manages
    the regional transmission system spanning from New Jersey
    west to Chicago and south to North Carolina. As such, PJM
    governs the transmission of electricity to fifty million
    consumers in thirteen different states and the District of
    Columbia. One of PJM’s primary responsibilities as system
    19
    operator is to ensure that there is a sufficient amount of
    electrical capacity within its system to provide reliable
    electricity to its consumers during periods of peak demand.
    “‘Capacity’ is not electricity itself but the ability to produce it
    when necessary.” Connecticut DPUC v. FERC, 
    569 F.3d 477
    , 479 (D.C. Cir. 2009). In a reliable transmission system,
    the full potential of the system is used only during periods of
    peak demand. That means that much of the rest of the time
    there will be generation capacity that is idle. One of PJM’s
    functions is to ensure that there are enough idle generators
    connected to the transmission grid for the system to function
    at peak load. It does this by predicting the expected peak load
    three years in advance and then setting a target level of
    capacity. The member-utilities that sell electricity to end-use
    consumers—known in administrative parlance as “load-
    serving entities,” or “LSEs”—are then each responsible for
    providing a proportionate share of the capacity target.
    PJM is also responsible for administering the regional
    markets for energy and energy capacity that have developed
    as competition among generators has increased. Energy—
    that is, actual electricity—is sold wholesale via a “day-ahead
    market” and a “real-time market.” See Black Oak Energy,
    LLC v. FERC, 
    725 F.3d 230
    , 233 (D.C. Cir. 2013). The term
    for the market mechanism used to determine energy prices in
    each area within the PJM region is “Locational Marginal
    Pricing,” or “LMP.” 
    Id. “Under LMP,
    the price any given
    buyer pays for electricity reflects a collection of costs
    attendant to moving a megawatt of electricity through the
    system to a buyer’s specific location on the grid.” 
    Id. at 233-
    34. In some areas, the transmission system is more
    “congested”, which means that PJM must dispatch more
    expensive generators to meet the area’s demand. “The cost of
    20
    congestion results in different prices at different nodes of the
    system, depending on how congested the wires leading to
    those nodes are.” 
    Id. at 234.
    Energy capacity, on the other hand, is sold in the PJM
    market at annual capacity auctions, which are the subject of
    this appeal. Capacity auctions allow LSEs to buy the capacity
    they need to satisfy PJM’s capacity requirements. Capacity
    auctions also, at least in theory, incentivize the development
    of new generation resources by establishing a market-based
    means by which those resources can recover their investment
    costs.
    Because the energy and energy capacity auctions
    determine the rates for the transmission and sale of energy in
    interstate commerce, they are subject to FERC oversight.
    PJM is therefore obligated to obtain FERC approval of any
    changes it makes to its “tariff,” which is the term of art used
    to refer to the “classifications, practices, and regulations” a
    public utility uses to establish electricity rates. See 16 U.S.C.
    § 824d(c). FERC reviews PJM’s proposed changes to its own
    tariff under § 205 of the FPA to determine whether such
    changes result in rates that are “just and reasonable.” 16
    U.S.C. § 824d(a). FERC can also make changes to PJM’s
    tariff under § 206 of the FPA, either on its own initiative or
    pursuant to a complaint from a third party, if it determines
    that the rates produced under the tariff are unjust or
    unreasonable. 
    Id. § 824e(a).
    B.     The Reliability Market
    Prior to 1999, PJM required LSEs that were unable to
    provide sufficient capacity in advance of when it was needed
    21
    to pay a deficiency charge based on the fixed costs of a new
    generator. In 1999, PJM modified the reliability requirement
    to allow LSEs to procure capacity up to the day before it was
    needed, while also instituting market opportunities to
    purchase “capacity credits.” LSEs that failed to obtain
    sufficient capacity in those markets were then subject to the
    deficiency charge. Those methods soon proved inadequate,
    however, as they resulted in supply insufficiencies and
    volatile capacity prices in certain locations. In particular, the
    retirement of many aging generators in the mid-Atlantic
    resulted in reliability problems throughout the region, and
    volatile prices made the capacity market ineffective at
    incentivizing development of new generation resources.
    Therefore, in 2000, PJM began negotiating with its
    stakeholders to reform the capacity market.
    In 2006, after a period of extended negotiation, an
    administrative law judge facilitated a settlement that created
    the Reliability Market. The settlement was approved with
    modification by FERC and incorporated into PJM’s tariff in
    the 2006 Order. See PJM Interconnection, LLC., 117 FERC ¶
    61,331 (2006). Under the FERC-approved tariff that resulted
    from that settlement, all capacity suppliers (i.e., generation
    and transmission resources) that wish to receive a capacity
    payment or satisfy an LSE’s capacity obligation are required
    to offer their available capacity into an auction. 4 Those offers
    4
    As discussed herein, some LSEs supply their own
    capacity—that is, they own their own generation resources,
    which they use to fulfill their capacity obligations. In order to
    have those resources counted toward their capacity
    obligations, however, the LSE must introduce them into the
    auction. See Initial Order on Reliability Pricing Model, 115
    22
    are grouped based on the particular “locational delivery area,”
    or “LDA,” the resource will serve. Offers are then accepted
    by the auction, or “cleared”, in order of price, starting with
    the lowest price offered, and continuing until there is
    sufficient capacity in the auction to satisfy PJM’s
    requirements for each LDA. All offers that clear for a given
    LDA are then paid the “clearing price” for that area, which is
    equal to the last offer (i.e., the highest offer) necessary to
    meet the area’s reliability needs as determined by PJM. The
    auction therefore sets the price that the LSEs will pay for
    capacity in a given area.         Only capacity offers that
    successfully clear the auction can be counted towards an
    LSE’s capacity requirements. PJM refers to this approach to
    determining the cost of capacity as the “Reliability Pricing
    Model,” or “RPM.” 5
    FERC ¶ 61,079, at ¶ 115 (Apr. 20, 2006) (“To prevent
    physical withholding, all existing generator capacity
    resources have a must offer requirement with regard to all
    unsold capacity. To encourage compliance with the must
    offer rule, generators that fail to comply in each auction will
    not be allowed to use its [sic] resource to satisfy any capacity
    requirement or receive any capacity payments in the Delivery
    Year.”).
    5
    The price and amount of annual capacity needed for each
    LDA is set using the Variable Resource Requirement
    (“VRR”) Curve, which is a construct meant to mimic a
    demand curve that can show the price PJM expects to pay for
    capacity based on the amount of capacity available in the
    market. Under the VRR curve, the price for capacity will
    decrease as more supply enters the market, up until the point
    at which PJM’s capacity objective is fully satisfied. To
    23
    Pursuant to the 2006 Order, PJM actually operates two
    types of capacity auctions: “base residual auctions” and
    “incremental auctions.” See 2006 Order ¶ 55 (Joint App.
    3046-47). Base residual auctions are held three years in
    advance of when the capacity offered at the auction will be
    needed. The forward-looking nature of the auctions serves
    two functions: it provides PJM advance assurance that its
    system will be reliable, and it allows new generation
    resources, though not yet complete, to test the market and
    perhaps obtain financing for their construction.         The
    incremental auctions then allow LSEs to purchase additional
    capacity if needed to meet greater-than-expected demand.
    Although both auctions function similarly, the base residual
    auctions are the primary subject of this appeal.
    The capacity auctions are not the only method by
    which LSEs can satisfy their capacity obligations. If an LSE
    prefers not to participate in the auctions, it can instead utilize
    the “Fixed Resource Requirement” (“FRR”) option, which
    allows an LSE to opt out of the auctions by building or
    directly contracting with generation resources to meet its
    capacity obligations. To qualify for the FRR option,
    however, the LSE must demonstrate to PJM that it has access
    to sufficient generation and transmission resources to meet
    projected capacity obligations for a five-year period,
    beginning three years in the future. If it succeeds in doing so,
    the LSE can forego the capacity auctions and pay its
    ensure reliability in the transmission system, there must be
    more capacity available than is generally needed by
    consumers. PJM thus artificially creates the demand for
    capacity, and it now does so via the VRR curve.
    24
    generation resources whatever price the parties agree to.
    However, if an LSE chooses the FRR option, it loses the
    ability to participate in the auctions during that five-year
    period; it cannot buy additional capacity, nor can it “defray
    the costs of new resources” it builds by offering their excess
    capacity into the auctions. See PJM Interconnection, LLC,
    135 FERC ¶ 61,022 (Apr. 12, 2011) [hereinafter, “April 12
    Order”] (Joint App. 81-82 n.98). In other words, participating
    in the FRR option is an all-or-nothing proposition, and
    appeals as a practical matter only to large utilities that still
    follow the traditional, vertically integrated model. 6
    C.     The Minimum Offer Price Rule
    In addition to establishing the capacity auctions, the
    2006 Order created several mechanisms designed to prevent
    market manipulation in those auctions. First, to prevent
    sellers from exercising monopoly power, the 2006 Order
    imposed a rigid price cap on all offers. Second, the
    settlement provided for a “Minimum Offer Price Rule,” or
    “MOPR,” that is designed to curb monopsony power, i.e., the
    power of a buyer facing many sellers and little to no
    6
    The record indicates that the FRR was incorporated into the
    2006 Order at the request of American Electric Power (AEP),
    one of the country’s largest utilities, and AEP is the only
    utility that has used the FRR option in recent years.
    25
    competition from other buyers. 7 The exercise of buyer
    market power is possible in part because many utility
    companies are both buyers and sellers of capacity in the
    capacity auctions. If, for example, an LSE owns a small
    generator, the LSE must offer that generation capacity into
    the auction in order for it to count towards the LSE’s capacity
    obligation. To fully satisfy that obligation, however, the
    same LSE may also have to purchase additional capacity from
    the auction. When such LSEs buy more capacity than they
    offer into the auction, they have an incentive to keep auction
    prices as low as possible. Theoretically, those net-buyers can
    achieve that objective by offering their capacity at artificially
    low prices that are sure to clear the auction. Such offers
    crowd out other capacity that is priced at a higher, cost-based
    rate, and thus result in a lower overall clearing price. To
    counteract that manipulation of the market, the MOPR seeks
    to identify uneconomic offers and “mitigate” them by raising
    them to a price that more accurately approximates their net
    costs.
    Under the original MOPR approved by FERC in the
    2006 Order, offers for capacity were subject to mitigation if
    7
    Technically, a monopolist is a single seller and a
    monopsonist is a single buyer, see Black’s Law Dictionary
    1028 (8th ed. 2004), but the terms are used loosely by the
    parties to mean, respectively, sellers and buyers who exercise
    disproportionate power in imperfectly competitive markets.
    More particularly, they use the term “monopsony” to mean
    net-buyers in the auction who sell into the auction at
    artificially low prices in order to depress the clearing price.
    We adopt that imprecise usage.
    26
    they failed three “screens”: a conduct screen, an impact
    screen, and an incentive screen (also known as the “net-short
    test”). The conduct screen identified offers that might be
    artificially low by comparing them to a “threshold” price,
    which was based on PJM’s estimate of the net cost of new
    entry into the market, or net “CONE,” for the relevant LDA. 8
    PJM determined the estimated net CONE for two types of
    generators—combustion turbines (“CT” generators) and
    combined cycle turbines (“CC” generators)—both of which
    are gas-fired generators. The threshold price for each of those
    generators was either 70% or 80% of its estimated net CONE
    (depending on the type of resource). Any offer that was
    below the threshold price would fail the “conduct screen.”
    8
    Like the VRR Curve, the net CONE is an administrative
    construct. PJM arrives at the net CONE figure by estimating
    the costs needed to build a particular type of generation
    resource, and then deducting from those costs the estimated
    revenue the new unit would receive through sales of “energy
    and ancillary services”, discussed infra. In other words, the
    more revenue a new generator is expected to make through
    energy sales, the larger the amount deducted from the costs of
    developing the resource. For example, if a new resource
    costs $100 to build, and is expected to earn $25 in energy
    sales, its net CONE would be $75. The net CONE and the
    VRR Curve are also related concepts. As 
    discussed supra
    ,
    the VRR Curve is meant to demonstrate the change in
    expected capacity prices as the amount of capacity in the
    market increases. Those expected prices – the “y axis” for a
    curve – are determined by PJM’s estimate of the net CONE
    (the “x axis” being quantity of capacity).
    27
    Offers that failed the conduct screen would then be
    subject to the “impact screen,” which was conducted by
    rerunning the auction to determine whether the offer would
    reduce the clearing price by 20% to 30% in the relevant LDA,
    or by $25/MW-day 9, whichever was greater. Put more
    simply, the impact screen determined whether a below-cost
    offer actually affected the clearing price in a substantial way.
    If it did, then the offer would be subjected to the final screen,
    the “net-short test”, in which PJM determined whether the
    seller had an incentive to depress prices. Specifically, PJM
    would determine whether the seller was in a “net-short
    position”, that is, whether the seller bought substantially more
    capacity from the auction than it sold, and thus had the
    incentive to reduce the clearing price. An offer that failed all
    three screens would then be “mitigated” by raising it to 80%
    or 90% of the estimated net CONE, depending on the
    resource type. That adjusted offer could still clear the
    auction, but only if it was at or below the clearing price.
    Importantly, however, not all offers were subject to the
    MOPR. First, the MOPR applied only to new entrants to the
    market, not to existing resources.         Although existing
    resources, like all available capacity, had to be offered into
    the auction, they could be offered at any price below the
    upper limit. In fact, because existing resources already
    incurred the costs needed to generate capacity, and could thus
    often afford to offer capacity at very low prices, they were
    9
    Capacity is measured in megawatt-days (MW-day) and bid
    into the RPM market as a dollar amount per megawatt-day.
    See PPL Energy Plus, LLC. v. Nazarian, Civil Action No.
    MJG-12-1286, 
    2013 U.S. Dist. LEXIS 140210
    , at *43 (D.
    Md. Sept. 30, 2013).
    28
    permitted to offer their capacity at a price of zero dollars,
    which would ensure that it cleared the auction and received
    the clearing price. The MOPR also did not apply to upgrades
    or additions to existing resources. Second, certain types of
    resources were never subject to the MOPR, including nuclear,
    coal, and hydroelectric resources.         Third, the MOPR
    exempted from its operation “any planned resource being
    developed in response to a state regulatory or legislative
    mandate to resolve a projected capacity shortfall.” April 12
    Order ¶ 124 (Joint App. 61-62). In order for an offer to
    qualify for that exemption, the state’s capacity shortfall had to
    be established “pursuant to a state evidentiary proceeding that
    includes due notice, PJM participation and an opportunity to
    be heard.” 
    Id. The original
    MOPR also provided special treatment to
    resources designated as “self-supply,” which are capacity
    resources that an LSE builds to serve its own load. Such a
    resource had to offer its capacity into the auction, and the
    resource had to clear the auction, in order for it to be counted
    toward the LSE’s capacity obligation. Unlike the three types
    of resources described above, self-supply resources were not
    listed among the exemptions to the MOPR, and so could be
    subject to mitigation if they failed the three screens. But the
    MOPR went on to state that, after offers were mitigated as
    needed and the clearing price was determined, PJM must
    accept capacity offers in the following order:
    (i) first, all Sell Offers in their
    entirety designated as self-supply
    committed regardless of price; (ii)
    then, all Sell Offers of zero . . .
    and (iii) then all remaining Sell
    29
    Offers in order of the lowest price
    ....
    PJM Tariff Attachment DD, Section 5.14(h)(4) (emphasis in
    original). The MOPR therefore suggested that self-supply
    offers would clear the auction before all other offers, even if
    the self-supply offers were actually higher than the clearing
    price. In other words, although they were not “exempt” from
    the MOPR, and thus could be mitigated, self-supply offers
    were entitled to what amounted to automatic clearance. 10
    For all resources, the original MOPR only applied the
    first time a resource was offered at an auction, regardless of
    whether it cleared the auction. Resources that failed to clear
    the first time could therefore be offered at subsequent
    auctions without facing the three screens and potential
    mitigation.
    In sum, the original MOPR would mitigate first-time
    offers from certain resources that had the potential to
    manipulate the market through the exercise of buyer market
    power. The original MOPR did not affect resources that were
    built pursuant to a state mandate intended to correct a
    capacity deficiency, and it appeared to allow self-supply
    10
    The original MOPR’s treatment of self-supply offers is a
    subject of some disagreement among the parties. FERC,
    PJM, and Cross-Petitioners P3 claim that the original MOPR
    was ambiguous as to whether there was an exemption for
    self-supply. The Load Petitioners, on the other hand, urge that
    the provision is clear—there was no exemption from
    mitigation, but all self-supply offers would clear the auction.
    We discuss this in detail infra.
    30
    offers to clear regardless of price. Notably, during the entire
    period it was in effect, the original MOPR was never
    triggered, meaning that no offer was subject to mitigation.
    III.
    A.     The New Jersey and Maryland Initiatives
    The chain of events leading up to FERC’s 2011 Orders
    was set in motion by the efforts of two states—New Jersey
    and Maryland—to invoke the MOPR’s exemption for state-
    mandated resources, efforts which, if successful, would result
    in the introduction of thousands of megawatts of subsidized
    capacity into the PJM market. On January 28, 2011, New
    Jersey Governor Chris Christie signed into law the “Long-
    Term Capacity Agreement and Pilot Program” (“LCAPP”),
    2011 N.J. Sess. Law Serv. Ch. 9 (codified at N.J. Stat. Ann. §
    48:3-98.2 (2011)), which launched a state initiative to
    develop new generation resources. According to the statute,
    New Jersey faced an “electrical power capacity deficit” due to
    transmission system overloads and aging generation facilities.
    
    Id. § 48:3-98:2(e),
    (h). Because PJM’s “reliability pricing
    model [had] not resulted in large additions of” generation
    facilities or load resources, “the construction of new, efficient
    generation [had to] be fostered by State policy.” 
    Id. § 48:3-
    98.2(b), (d). 11
    11
    FERC disagrees that the RPM has failed to secure
    sufficient capacity in the PJM region. See, e.g., “Order on
    Compliance Filing, Rehearing, and Technical Conference.”
    137 FERC ¶ 61,145 (November 17, 2011), ¶ 3 (“[T]he
    evidence before us suggests that RPM has in fact succeeded
    31
    Pursuant to the LCAPP, the New Jersey Board of
    Public Utilities would conduct a competitive bidding process,
    in which it would evaluate proposed resources based on their
    “environmental, economic, and community benefits.” 
    Id. § 48:3-
    98.3(b)(2). Winning bidders would then enter into long-
    term contracts with New Jersey’s four electric public utilities,
    pursuant to which they would build new capacity resources in
    exchange for payments at a specified rate. 
    Id. § 48:3-
    51; 
    id. § 48:3-98.3(c)(9).
    The new generation resources would be
    required by those contracts to attempt to clear the PJM base
    residual auction. 
    Id. § 48:3-
    98.3(c)(12). Once a resource
    cleared, New Jersey’s public utilities would then pay the
    generators the difference between the contract price and the
    amount they were able to receive from the auction, or if the
    clearing price was higher than the contract price, the
    generators would reimburse the public utilities for the excess
    payment. 
    Id. at (c)(4).
    To ensure that its resources would
    clear, New Jersey intended to offer the capacity into the base
    residual market at a price below their actual cost.
    Spurred to action by similar concerns regarding long-
    term reliability needs and the suspension of a key
    transmission project, the Maryland Public Service
    Commission (PSC) in December 2010 released a draft
    Request for Proposals (“RFP”) for Generation Capacity
    Resources Under Long-Term Contract.               The RFP
    contemplated that the PSC would conduct an evidentiary
    hearing to determine whether it would, similarly to New
    Jersey, require Maryland’s electric distribution companies
    in securing sufficient capacity to meet reliability requirements
    for the PJM region.”). (Joint App. 105)
    32
    (EDCs) to enter into long-term contracts to purchase new
    capacity, or to construct new generation on their own. After
    the close of briefing in this matter, the PSC did issue a
    Generation Order directing each of three Maryland EDCs to
    contract with Commercial Power Ventures (CPV) Maryland.
    See Nazarian, 2013 U.S. Dist. LEXIS at *5. As in New
    Jersey, the Maryland contracts require CPV to sell capacity in
    the PJM markets, and for the EDCs to pay CPV any
    difference between the price received in the market and a pre-
    determined contract price. 12 Like New Jersey, Maryland
    intended to offer its new capacity resources into the PJM
    market at a price below its actual cost to ensure that they
    would clear.
    B.       The P3 Complaint and PJM’s Revisions to the
    MOPR
    12
    We note that, since oral argument in this case, two federal
    district courts have issued decisions invalidating the New
    Jersey and Maryland initiatives on the ground that they seek
    to legislate or regulate wholesale prices for energy in
    interstate commerce, a field occupied exclusively by FERC,
    in violation of the Supremacy Clause. See generally PPL
    EnergyPlus, LLC v. 
    Nazarian, supra
    ; PPL EnergyPlus, LLC
    v. Hanna, Civil Action No. 11-745, 
    2013 U.S. Dist. LEXIS 147273
    (D.N.J. Oct. 11, 2013). While we are mindful of the
    implications of these decisions on certain issues in this case,
    we deal here with the legality of actions taken by FERC, not
    of those taken by the states. Accordingly, we do not address
    those decisions.
    33
    Shortly after the LCAPP was enacted, an association
    of PJM’s power providers, known as “P3” 13, filed a complaint
    with FERC under § 206 of the FPA, arguing that the MOPR
    implemented in the 2006 Order was not an effective tool for
    curbing buyer market power. Specifically citing the New
    Jersey and Maryland initiatives, P3 urged that “without
    effective mitigation, the exercise of buyer market power will
    sound the death knell of competitive markets—and with them
    the cost savings that markets create for consumers.” (Joint
    13
    P3 is a nonprofit organization of PJM stakeholders
    consisting of Calpine Corporation; DPL Energy, LLC; Edison
    Mission Group; EquiPower Resources Corp.; Essential
    Power, LLC; Exelon Corp.; GDF SUEZ North America, Inc.;
    Homer City Generation, L.P.; NextEra Energy Resources,
    LLC; NRG Energy Inc.; PPL Corporation; and PSEG Energy
    Resources & Trade LLC (PSEG). It appears that P3 had a
    slightly different membership when it filed its initial
    complaint with FERC, see April 12 Order ¶ 2 n.4 (Joint App.
    27) (listing members of P3, some of which differ from the
    membership listed in P3’s brief). However, no party has
    asserted that this apparent membership change has any
    relevance for purposes of our review. We further note that in
    its brief, despite listing PSEG as a member of P3 in its
    corporate disclosure statement, P3 at various points refers to
    “P3 and PSEG” as if they are distinct from one another. See,
    e.g., P3 Br. 2, 63. PSEG also filed its own petition for review
    separate from the other members of P3. However, because
    PSEG did not file a brief independently from the other
    members of P3, and because PSEG does not appear to make
    any independent arguments in addition to those made by P3,
    we assume for purposes of this opinion that PSEG is a
    member of P3.
    
    34 Ohio App. 204
    ) Accordingly, P3 urged PJM to eliminate the
    MOPR’s exemption for state-mandated resources.
    P3 also requested other reforms of the MOPR in its
    complaint, all geared toward mitigating buyer-side market
    power: (1) adjustment of the conduct screen so that any offer
    that was less than 100% of the estimated net CONE would
    trigger the MOPR; (2) elimination of the two subsidiary
    screens (the impact screen and the net-short test) entirely; (3)
    elimination of the exemption for self-supply (to the extent
    that one existed); (4) addition of a requirement that a new
    resource successfully clear two auctions before becoming
    exempt from the MOPR; and (5) addition of an exemption to
    the MOPR “for any new resource whose sponsor affirms it
    will not receive any form of out-of-market subsidy or
    preferential treatment by state regulators,” which it called a
    “No-Subsidy Off-Ramp”. P3 Br. 19.
    On February 11, 2011, in response to P3’s complaint,
    PJM submitted to FERC proposed changes to its tariff that
    had incorporated the original MOPR, under § 205 of the FPA.
    The original MOPR, PJM explained, was designed to
    “address a concern that some market participants might have
    an incentive to depress market clearing prices by offering
    some self-supply at less than a competitive level.” (Joint
    App. 393 (internal quotation marks omitted)). Because the
    original MOPR had never been triggered, PJM urged that the
    existing rule was not adequate to serve these purposes. PJM
    also noted that “state programs intended to support new
    generation entry through out-of-market payments to the
    generator”—like those developed by New Jersey and
    Maryland—had the potential to “raise the price-suppression
    35
    concerns that MOPR-type provisions are intended to
    address.” (Id.)
    The reforms PJM proposed differed somewhat from
    the changes P3 suggested, however. PJM adopted P3’s
    recommendations that the MOPR be amended to eliminate
    the impact screen and the net-short requirement, and “to
    clarify that self-supply offers are subject to the MOPR.” (Id.
    at 411). According to PJM, self-supply offers were never
    intended to be exempt from the MOPR, and the additional
    screens made the MOPR too lenient and “too easily gamed”.
    (Id. at 406) PJM also accepted, with some significant
    changes, P3’s proposals that the state-mandated exemption be
    eliminated, that the conduct screen threshold be increased,
    and that a resource be required to clear an auction before
    becoming exempt from the MOPR. Specifically, (1) rather
    than simply eliminating the state-mandated exemption, PJM
    proposed to amend the MOPR to provide that a resource that
    failed the conduct screen could, via a § 206 filing, justify the
    state program to FERC and seek an individual exemption
    from the MOPR; (2) PJM agreed to increase the conduct
    screen threshold to 90% of the estimated net CONE, rather
    than to 100% of that value, as proposed by P3, explaining that
    net CONE “is merely an estimate,” and that “[a] 90% factor
    strikes the right balance” between granting some wiggle room
    for slightly below-CONE offers and minimizing “the risk that
    a seller can evade the MOPR and use a below-cost price to
    suppress clearing prices for all sellers.” (Id. at 401-02); (3)
    PJM agreed that a new resource should have to actually clear
    an auction, and not merely participate in one, to become
    exempt from the MOPR in future auctions. PJM went further
    than P3 requested, however, proposing that a resource be
    required to clear three times before becoming exempt, rather
    36
    than merely twice. The only P3 proposal that PJM rejected in
    its entirety was P3’s proposed “No-Subsidy Off-Ramp,” by
    which any new resource could avoid the MOPR by affirming
    that its sponsor had not received an out-of-market subsidy.
    PJM also incorporated several changes to the MOPR
    that P3 had not suggested. First, it added wind and solar
    resources to the list of resources that would always be
    exempt from the MOPR, and thus could offer their capacity
    at prices as low as zero. As a result of those additions, the
    MOPR would only apply to new gas-fired facilities. Second,
    PJM explained for the first time how an offer that fails the
    MOPR can nonetheless avoid mitigation by demonstrating to
    FERC under § 206 that the MOPR screen is unjust and
    unreasonable “as applied to its specific costs and its specific
    revenue expectations.” (Id. at 404)
    Third, PJM clarified and amended the method used to
    determine the estimated net CONE for each LDA. Relevant
    here, it defined the method for calculating “energy and
    ancillary services offsets” to be used in determining the
    MOPR trigger threshold for a new resource. 14 Under the
    existing guidelines used to construct the VRR Curve, “PJM
    associate[d] the gross CONE in [an LDA] . . . with the
    energy revenues calculated for a zone within that area.” (Id.
    at 400)     PJM proposed an approach similar to this
    methodology with one adjustment.          Instead of basing
    revenues on the zone in which a generic “reference resource”
    14
    The original MOPR referred to energy and ancillary
    services offsets, but “never explain[ed] how the energy and
    ancillary service revenues [would] be determined.” (Joint
    App. 399)
    37
    was located—the method used in the VRR Curve
    guidelines—PJM would instead use the revenues earned by
    resources in the highest-earning “zone” within the LDA. In
    other words, all new resources in a given LDA would be
    presumed to have the same earning potential as the highest-
    earning generators in the LDA. PJM was concerned that, if
    the presumed location of a “reference resource” were used to
    determine energy and ancillary services revenues, a new
    entrant might “fail the MOPR screen merely because it is
    located in a zone with higher [marginal prices] than the zone
    in which the hypothetical reference resource was assumed to
    be built.” (Joint App. 400) PJM therefore erred on the side
    of allowing more resources to avoid mitigation. PJM also
    provided that those prices would be based on the prices for
    energy in the “real-time” energy market, as opposed to the
    “day-ahead” market.
    PJM’s tariff revisions prompted numerous comments,
    protests, answers, and cross-answers from interested parties.
    Several states and LSEs argued that “eliminating the state-
    mandated exemption and other related MOPR conditions
    would transform [the capacity auctions] from a residual
    market into the primary market for securing new capacity,”
    and would impermissibly interfere with legitimate state
    policies. (Petitioners/Cross Respondents’ Joint Statements
    17-18) Similarly, several municipal and rural cooperative
    utility companies “protested that eliminating automatic
    clearance for self-supply resources would undermine their
    traditional business models.” (Id. at 18) PJM responded to
    those protests in two filings with FERC in March of 2011,
    but it did not propose any further revisions to the MOPR.
    C.     FERC’s MOPR Orders
    38
    On April 12, 2011, FERC issued the April 12 Order,
    accepting, with some modifications, PJM’s revised tariff as
    “just and reasonable.” 135 FERC ¶ 61,022 (2011). FERC
    agreed with PJM that it was just and reasonable to: (1)
    calculate energy and ancillary services revenues in the
    manner PJM proposed (using real-time energy prices and the
    highest-priced zones within an LDA); (2) raise the conduct
    screen to 90% of the estimated net CONE; (3) eliminate the
    net-short screen and the impact screen; (4) add exemptions
    for wind and solar generation resources; and (5) clarify that
    self-supply resources are subject to the MOPR. FERC
    disagreed, however, with three components of the revised
    MOPR: (1) the method by which a resource can obtain an
    individual exemption to the MOPR; (2) the replacement for
    the state-mandated exemption; and (3) the number of
    auctions a resource must clear before becoming exempt from
    the MOPR.
    With regard to individual exemptions to the MOPR,
    FERC found unjust and unreasonable PJM’s proposal to
    require parties to submit at the outset a § 206 filing with
    FERC to demonstrate that a sell offer was consistent with the
    project’s costs. FERC agreed that offers that were in fact
    competitive and cost-based should not be mitigated, but it
    found unreasonable the “complex and lengthy litigation” that
    could result from the § 206 review process. Instead, FERC
    directed PJM to modify the tariff to provide that PJM and its
    Independent Market Monitor would review such cost
    justifications. 15 Put more simply, FERC wanted PJM, not
    15
    Despite numerous references to the Independent Market
    Monitor in their briefing, the parties have not done the Court
    39
    FERC, to conduct the review process. FERC concluded that,
    with the unit-specific cost review process in place, P3’s
    proposed “No-Subsidy Off-Ramp” was unnecessary.
    As for the state-mandated exemption, FERC agreed in
    part with PJM, concluding that the exemption needed to be
    eliminated due to “mounting evidence of risk from what was
    previously only a theoretical weakness in the MOPR rules,”
    namely, that state-subsidized resources would suppress
    auction prices. April 12 Order ¶ 139 (Joint App. 66). FERC
    disagreed with PJM’s proposed replacement mechanism,
    however. Specifically, it declined to adopt a formal process
    for a state to justify its initiative and thus obtain an
    exemption from the MOPR. FERC explained that states, like
    all parties, were free to file for an exemption from the MOPR
    under § 206. But FERC concluded that there was no need for
    a review process like the one PJM had proposed, which
    would have balanced the state’s interests against the adverse
    price effects of below-cost offers, because “there is no valid
    state interest” in ensuring that uneconomic offers would clear
    the auction. 
    Id. at ¶
    142 (Joint App. 68). Accordingly,
    FERC declined to accord states an opportunity to justify their
    initiatives on policy grounds, instead removing the state
    exemption and requiring them to submit cost-based offers
    like other entrants or suffer the consequences of mitigation.
    the favor of explaining the precise role of this entity.
    Intervenor First Energy Solutions Corp. helpfully describes
    the Independent Market Monitor as “a neutral entity that
    monitors compliance with PJM’s market rules.” (FirstEnergy
    Br. 12)
    40
    Finally, FERC rejected PJM’s proposal that the MOPR
    be applied to a given resource until that resource has cleared
    the auction three times. Instead, FERC concluded that the
    MOPR should apply only until a resource clears an auction
    once, because by clearing one auction “the resource
    demonstrates that its capacity is needed by the market at a
    price near its full entry cost . . . .” 
    Id. at ¶
    176 (Joint App.
    76).     In so concluding, FERC partially adopted a
    recommendation submitted by the Independent Market
    Monitor. FERC rejected the second component of the
    Independent Market Monitor’s proposal, however, which
    would have continued to impose the MOPR in later auctions
    unless the resource could “show it is not receiving
    discriminatory subsidies.” 
    Id. at ¶
    177 (Joint App. 77).
    FERC declined to adopt that requirement because “even if
    discriminatory subsidies are being received, if the resource is
    needed at the MOPR bid then it is a competitive resource and
    should be permitted to participate in the auction regardless of
    whether it also receives a subsidy.” 
    Id. On May
    12, 2011,
    PJM submitted a compliance filing that responded to FERC’s
    instructions in the April 12 Order.
    Following FERC’s ruling, numerous parties sought
    rehearing. In response to those requests, FERC convened a
    technical conference on July 28, 2011, to explore the issues
    raised on rehearing, specifically on issues regarding the
    MOPR’s applicability to self-supply. After the technical
    conference, parties submitted formal comments for FERC to
    consider.
    On November 17, 2011, FERC issued an “Order on
    Compliance Filing, Rehearing, and Technical Conference.”
    137 FERC ¶ 61,145 (November 17, 2011) [hereinafter,
    41
    “November 17 Order”].           Although that order slightly
    modified some of the revisions approved in its April 12
    Order, FERC did not change its fundamental position on any
    of the issues relevant to this appeal. Rather, it reaffirmed its
    commitment to its initial reaction to the revised tariff,
    explaining that, although the capacity auctions had generally
    been successful since their adoption, the MOPR had to be
    amended to prevent “subsidized entry supported by one
    state’s or locality’s policies” from “disrupting the
    competitive price signals [the auction] is designed to produce
    . . . .” November 17 Order ¶ 3 (Joint App. 105-06). FERC
    emphasized that offers that fail the conduct screen (that is,
    appear to be below-cost) have two options for avoiding
    mitigation: they can appeal to PJM through the unit-specific
    cost justification process or they can seek an exemption from
    FERC by using § 206 of the FPA. FERC further explained
    that if an LSE does not want to be subject to the MOPR at
    all, it can utilize the FRR option. FERC therefore continued
    to find the majority of the revisions approved in the April 12
    Order “just and reasonable.”
    Several parties sought rehearing of FERC’s November
    17 Order, which FERC denied on March 15, 2012. See
    “Order on Rehearing”, PJM Interconnection, LLC, 138
    FERC ¶ 61,194 (March 15, 2012) [hereinafter “March 15
    Order”].
    D.     Petitions for Review
    42
    Numerous parties have timely petitioned for review of
    the 2011 Orders. 16 Specifically, Petitioners in this appeal are
    the New Jersey Board of Public Utilities and the New Jersey
    Division of Rate Counsel (collectively, “New Jersey”), the
    Maryland Public Service Commission (“Maryland”), a group
    of governmentally-owned utilities and rural cooperative
    utilities referred to as the “Load Petitioners” 17, and Hess
    Corporation (“Hess”). Intervening on those Petitioners’
    behalf is CPV Power Development, Inc., which is the parent
    corporation of two companies that have received contracts
    from New Jersey and Maryland to build new generation
    resources.      In addition, P3 has filed a cross-petition
    challenging various aspects of the Orders.         A group of
    energy generation companies has also intervened on Cross-
    Petitioners’ behalf. 18 Both PJM and FirstEnergy Solutions
    16
    All Petitioners and Cross-Petitioners challenge the April 12
    and November 17 Orders. Load Petitioners additionally
    challenge the March 15 Order.
    17
    Specifically, the Load Petitioners are Old Dominion
    Electric Cooperative, American Public Power Association,
    National Rural Electric Cooperative Association, North
    Carolina Electric Membership Corporation, Delaware
    Municipal Electric Corporation, American Municipal Power,
    Inc., and Southern Maryland Electric Cooperative, Inc.
    18
    Those companies are PPL Electric Utilities Corporation;
    PPL EnergyPlus, LLC; PPL Brunner Island, LLC; PPL
    Holtwood, LLC; PPL Martins Creek, LLC; PPL Mountour,
    LLC; PPL Susquehanna, LLC; Lower Mount Bethel Energy,
    LLC; PPL New Jersey Solar, LLC; PPL New Jersey Biogas,
    43
    Corp., another energy provider         (“FirstEnergy”)    have
    intervened on FERC’s behalf.
    As discussed infra, Petitioners and Cross-Petitioners
    challenge different provisions of the MOPR. Petitioners take
    issue with: (1) the elimination of the exemption for state-
    mandated resources; (2) FERC’s decision that the MOPR did
    not provide for automatic clearance for self-supply offers;
    and (3) the addition of solar and wind-powered generators to
    the list of resources that are exempt from the MOPR.
    Cross-Petitioners, on the other hand, challenge: (1) the
    policy of basing the calculation for energy and ancillary
    services offsets on the zone with the highest revenues; and
    (2) the policy of exempting resources from the MOPR once
    they have cleared only one capacity auction.
    Cross-Petitioners’ Petition for Review originally
    challenged three additional components of the revised
    MOPR: (1) the decision to set the conduct screen at 90% of
    estimated net CONE, rather than 100%; (2) the use of real-
    time prices, rather than day-ahead prices, in calculating
    energy and ancillary services offsets; and (3) the rejection of
    the “No-Subsidy Off-Ramp” proposal. Since this petition
    was filed, however, FERC has further altered the MOPR to
    effectively adopt P3’s positions on these issues. 19 After
    LLC; PPL Renewable Energy, LLC; and Electric Power
    Supply Association.
    19
    See PJM Interconnection, LLC, 138 FERC ¶ 61,062, at ¶¶
    17, 67, 144 (Jan. 30, 2012) (approving a change in
    methodology for calculating revenues to determine net CONE
    to consider day-ahead prices); PJM Interconnection, LLC,
    44
    determining that the existence of these provisions did not
    cause any economic harm to them in the 2011 and 2012
    annual auctions, P3 no longer seeks redress on these points.
    In addition to these changes, in a May 2, 2013 Order
    [hereinafter, the “2013 Order”], FERC also provided, for the
    first time, a limited exemption from MOPR mitigation for
    resources designated as self-supply. Rather than merely
    providing for guaranteed clearing for self-supply resources,
    which Load Petitioners argue existed under the 2006 MOPR,
    FERC’s 2013 Order finds just and reasonable PJM’s proposal
    to completely exempt self-supply from mitigation, subject to
    net-short and net-long tests. 20 In other words, if a sponsor
    LSE introduces new self-supply but can demonstrate that it is
    not a net buyer of capacity (and therefore does not have an
    incentive to artificially lower the clearing price), the self-
    supply will be exempt from mitigation under the MOPR.
    This new rule, in essence, enables self-supply resources to be
    “price-takers”, i.e., new self-supply resources may be entered
    into the auction at artificially low costs, with the expectation
    that they not be the most costly offer, and therefore will not
    143 FERC ¶ 61,090 (May 2, 2013), at ¶ 24 (approving PJM’s
    proposal to exempt from mitigation resources that do not
    receive out-of-market subsidies) and ¶¶ 183, 195 (approving
    PJM’s proposal to increase MOPR benchmark values to
    100% of net CONE).
    20
    Again, a “net-short” position “refers to the circumstance
    where an LSE owns and/or contracts for an amount of
    capacity . . . that is less than its capacity needs . . . .”. On the
    other hand, a “net-long” position “refers to the circumstance
    where an LSE owns or contracts for generation in excess of
    its capacity needs . . . .” 2013 Order ¶ 25 n.19.
    45
    set the clearing price. Rather, they will take whatever
    clearing price results from the auction. It does not appear that
    the Load Petitioners have sought rehearing on this issue.
    IV.
    This Court reviews FERC Orders under § 313(b) of the
    FPA, 16 U.S.C. § 825l(b) and § 10(e) of the Administrative
    Procedure Act (APA), 5 U.S.C. § 706(2). Under the FPA,
    FERC’s factual findings are determinative as long as they are
    supported by substantial evidence. 16 U.S.C. § 825l(b). The
    “substantial evidence” standard “‘requires more than a
    scintilla, but can be satisfied by something less than a
    preponderance of the evidence.’” La. PSC v. FERC, 
    522 F.3d 378
    , 395 (D.C. Cir. 2008); accord Mars Home for Youth v.
    NLRB, 
    666 F.3d 850
    , 853 (3d Cir. 2011) (“Substantial
    evidence is more than a mere scintilla. It means such relevant
    evidence as a reasonable mind might accept as adequate to
    support a conclusion.” (internal citation and quotation marks
    omitted)). If the evidence is susceptible to more than one
    rational interpretation, we must uphold the agency’s
    determination. Fla. Mun. Power Agency v. FERC, 
    315 F.3d 362
    , 368 (D.C. Cir. 2003) (“The question we must answer . . .
    is not whether record evidence supports [petitioner]’s version
    of events, but whether it supports FERC’s.”).
    In reviewing FERC’s orders, the Court must determine
    “whether a rational basis exists for a conclusion, whether
    there has been an abuse of discretion, or . . . whether the
    Commission’s order is arbitrary or capricious or not in
    accordance with the purpose of the [FPA].” Cities of Newark
    v. FERC, 
    763 F.2d 533
    , 545 (3d Cir. 1985) (internal quotation
    marks omitted). “‘We affirm the Commission’s orders so
    46
    long as FERC examined the relevant data and articulated a
    rational connection between the facts found and the choice
    made.’” Sacramento Mun. Util. Dist. v. FERC, 
    616 F.3d 520
    ,
    528 (D.C. Cir. 2010) (quoting Alcoa Inc. v. FERC, 
    564 F.3d 1342
    , 1347 (D.C. Cir. 2009) (internal alterations omitted)).
    FERC’s decisions regarding wholesale rate issues are entitled
    to broad deference. See Morgan Stanley Capital Grp., Inc. v.
    Public Util. Dist. No. 1, 
    554 U.S. 527
    , 532 (2008) (“The
    statutory requirement that rates be ‘just and reasonable’ is
    obviously incapable of precise judicial definition, and we
    afford great deference to the Commission in its rate
    decisions.”); Md. Pub. Serv. Comm’n v. FERC, 
    632 F.3d 1283
    , 1286 (D.C. Cir. 2011) (“[B]ecause issues of rate design
    are fairly technical and, insofar as they are not technical,
    involve policy judgments that lie at the core of the regulatory
    mission, our review of whether a particular rate design is just
    and reasonable is highly deferential.” (internal quotation
    marks and citations omitted)); see also N. Penn. Gas Co. v.
    FERC, 
    707 F.2d 763
    , 766 (3d Cir. 1983) (FERC’s exercise of
    its expertise carries “a presumption of validity”).
    Under § 205 of the FPA, 16 U.S.C. § 824d, public
    utilities may change their rates unilaterally, upon 60 days’
    notice to FERC, which then reviews the changed rates to
    ensure that they are “just and reasonable.” It is not necessary,
    in a filing pursuant to        § 205, that FERC find that the
    previous rate was unjust or unreasonable. See Atl. City Elec.
    Co. v. FERC, 
    295 F.3d 1
    , 9-10 (D.C. Cir. 2002) (with respect
    to a filing under § 205, “FERC plays ‘an essentially passive
    and reactive role.’”) (quoting City of Winnfield v. FERC, 
    744 F.2d 871
    , 876 (D.C. Cir. 1984)). In contrast, under § 206,
    FERC may change a rate in response to a complaint or on its
    own motion, only if the moving party demonstrates that the
    47
    existing rate is unjust and unreasonable and the proposed
    alternative is just and reasonable. 16 U.S.C. § 824e.
    A.     Petitioners’ Arguments
    1.    The Elimination of the Exemption for
    State-Mandated Resources
    State Petitioners’ attack on the elimination of the
    exemption for state-mandated resources contains two
    overarching arguments: (1) that the MOPR changes amount
    to direct regulation of generating facilities, which FERC is
    prohibited from doing under § 201 of the FPA; and (2) that
    FERC erred in approving PJM’s elimination of the state-
    mandated exemption as just and reasonable by failing to
    sufficiently explain its reasons for departing from the 2006
    Order, which arbitrarily and capriciously denies the exception
    upon which they had relied. We address each of these in turn.
    a.     FERC’s Jurisdiction
    New Jersey Petitioners urge that, by eliminating the
    state-mandated exemption, FERC effectively attempts to
    substitute its own power supply preferences for those of the
    states and LSEs in violation of § 201 of the FPA, which
    provides that states retain authority over “facilities used for
    the generation of electric energy”. See 16 U.S.C.             §
    824(b)(1). New Jersey asserts that FERC’s elimination of the
    state-mandated exemption thus goes “beyond protecting the
    wholesale rates against the effects of” the entry of
    uneconomic resources, and instead “seeks to prevent the entry
    itself.” N.J. Br. 24. Relatedly, New Jersey argues that in
    mandating that state-sponsored capacity resources clear based
    48
    on cost and cost alone, FERC has usurped the state’s right to
    rely on integrated resource planning. The state argues that
    cost should not be the only permissible consideration in
    choosing among capacity suppliers because “[t]echnology
    and fuel diversity are essential to ensuring that customers
    avoid both price and reliability risks from over-dependence
    on a single supply input.” N.J. Reply Br. 4-5.
    FERC responds that the FPA bestows on it broad
    authority over rules affecting wholesale rates. It argues that
    courts have consistently upheld its jurisdiction over its
    “regulation of capacity markets, including charges,
    requirements, and market rules, as practices ‘affecting’ rates .
    . . .” FERC Br. 40. In the FERC Orders at issue in this
    action, FERC repeatedly asserts jurisdiction to review PJM’s
    proposed change to the state-mandated exemption as a rule
    affecting prices paid for energy in interstate commerce. See,
    e.g., April 12 Order ¶ 143 (Joint App. 68) (“Because below-
    cost entry suppresses capacity prices and because the
    Commission has exclusive jurisdiction over wholesale rates,
    the deterrence of uneconomic entry falls within the
    Commission’s jurisdiction, and we are statutorily mandated to
    protect the RPM against the effects of such entry.”);
    November 17 Order ¶ 89 (Joint App. 130) (“[T]he MOPR
    does not interfere with states or localities that, for policy
    reasons, seek to provide assistance for new capacity entry if
    they believe such expenditures are appropriate for their state.
    We seek only to ensure the reasonableness of the wholesale,
    inter-state prices determined in the markets PJM
    administers.”).
    Under the APA, we are charged with reviewing
    whether an agency action is “in excess of statutory
    49
    jurisdiction, authority, or limitations, or short of statutory
    right”. 5 U.S.C. § 706(2)(C). The Supreme Court recently
    confirmed that an agency’s assertion of jurisdiction is entitled
    to Chevron deference. See City of Arlington v. FCC, 569
    U.S. __, 
    133 S. Ct. 1863
    , 1868-69 (2013).
    After reviewing the FERC Orders at issue here and the
    relevant case law, we conclude that FERC did not exceed its
    jurisdiction in eliminating the state-mandated provision.
    Under the FPA, FERC has jurisdiction over rules affecting
    the rates of the transmission or sale of energy in interstate
    commerce. See 16 U.S.C. § 824d. Here, it is undisputed that
    New Jersey and Maryland’s plans to introduce thousands of
    megawatts of new capacity into the Base Residual Auction
    would have had an effect on the prices of wholesale electric
    capacity in interstate commerce. See Mississippi Power &
    Light Co. v. Mississippi, 
    487 U.S. 354
    , 374 (1988) (holding,
    among other things, that FERC had jurisdiction over power
    allocations that affect wholesale rates, and stating that
    “[s]tates may not regulate in areas where FERC has properly
    exercised its jurisdiction to determine just and reasonable
    wholesale rates or to insure that agreements affecting
    wholesale rates are reasonable.”) (emphasis added);
    Municipalities of Groton v. FERC, 
    587 F.2d 1296
    , 1302 (D.C.
    Cir. 1978) (rejecting jurisdictional challenge to FERC’s
    authority to levy deficiency charges on utilities that failed to
    procure generating capacity sufficient to meet its load
    requirements, and stating that, “[i]t is sufficient for
    jurisdictional purposes that the deficiency charge affects the
    fee that a participant pays for power and reserve service,
    irrespective of the objective underlying that charge.”).
    50
    In Connecticut Department of Utility Control v. FERC,
    
    569 F.3d 477
    (D.C. Cir. 2009), the Court of Appeals for the
    D.C. Circuit rejected a similar argument to the one New
    Jersey makes here with respect to the New England capacity
    market. In that case, the Connecticut Department of Public
    Utility Control (“DPUC”) challenged FERC’s authority to
    require it to obtain specific amounts of capacity and to adjust
    resource offer prices to levels where the supply of available
    capacity meets the pre-determined demand. 
    Id. at 480.
    21 The
    Connecticut DPUC argued that any movement upward in the
    capacity requirement mandated by the New England-area
    RTO amounted to a requirement that LSEs install new
    capacity, and therefore contravened Section 201 of the FPA,
    which states that FERC “shall not have jurisdiction . . . over
    facilities used for the generation of electric energy.” 
    Id. at 481
    (internal quotation marks omitted) (alteration in original)
    (citing 16 U.S.C. § 824(b)(1)).
    The court rejected Connecticut DPUC’s claim that
    FERC’s approval of the capacity requirement imposed by the
    ISO-NE (the New England area’s equivalent to PJM)
    amounted to direct regulation of generation facilities. First,
    the court pointed out that the mechanism did not actually
    require the installation of additional capacity at all; rather, it
    merely set a peak demand estimate, and employed market
    forces to locate a price at which market incentives were
    sufficient to meet that demand. 
    Id. at 481
    -82. State and local
    authorities retained control over their power plants, including,
    21
    As in the instant matter, New England’s Forward Capacity
    Market, like the Reliability Market at issue here, was the
    result of a settlement among power system stakeholders.
    Connecticut 
    DPUC, 569 F.3d at 481
    .
    51
    among other things, forbidding new entrants from providing
    new capacity, limiting new construction, and requiring
    retirement of existing generators, without interference from
    FERC. 
    Id. at 481
    . However, states were still required to
    shoulder the economic consequences of their choices—
    decisions to limit the amount of capacity in the market in turn
    affected the market clearing price for capacity. 
    Id. In addition,
    the court pointed out that FERC was not
    seeking to impose a capacity requirement at all. Rather,
    FERC was merely seeking to “ensure that the capacity
    charges actually imposed by ISO-NE are fair to suppliers and
    consumers. That reasonable concerns about system adequacy
    might factor into the fairness of those charges is precisely
    what brings them within the heartland of [FERC’s]
    jurisdiction.” 
    Id. at 483.
    In other words, FERC had the duty
    to ensure that the mechanism employed by the ISO-NE to
    determine the clearing price would yield rates that were just
    and reasonable. Because ISO-NE’s preferred mechanism
    employed a capacity requirement, FERC was within its
    jurisdiction in reviewing and approving that capacity
    requirement.
    New Jersey attempts to distinguish Connecticut
    Department of Utility Control, urging that, in that case, FERC
    “did not seek to dictate which resources LSEs used to fulfill
    their capacity obligations,” N.J. Br. 26 (emphasis in
    original), while here, FERC is preventing New Jersey from
    using the resources it has chosen to promote. But FERC is
    doing no such thing. The states may use any resource they
    wish to secure the capacity they need. The elimination of the
    state-mandated exemption means only that if the states wish
    to use a new generation resource to satisfy their capacity
    52
    obligations required under the Reliability Pricing Model, the
    resource must clear the Base Residual Auction at or near its
    net cost of new entry. Such a requirement ensures that the
    new resource is economical—i.e., that it is needed by the
    market—and ensures that its sponsor cannot exercise market
    power by introducing a new resource into the auction at a
    price that does not reflect its costs and that has the effect of
    lowering the auction clearing price. Furthermore, even if the
    states’ preferred generation resources fail to clear the auction,
    the states are free to use them anyway; the only caveat is that
    the states cannot use the resources to offset their capacity
    obligations in the RPM, as such obligations can only be
    satisfied by resources that are demanded by the capacity
    market at a price reflecting their cost.           Thus, as in
    Connecticut Department of Utility Control, New Jersey and
    Maryland are free to make their own decisions regarding how
    to satisfy their capacity needs, but they “will appropriately
    bear the costs of [those] decision[s],” 
    id. at 481,
    including
    possibly having to pay twice for capacity. 22
    22
    New Jersey also cites Maine Public Utilities Commission v.
    FERC, 
    520 F.3d 464
    (D.C. Cir. 2008) for the point that
    FERC’s jurisdiction to approve the capacity requirements in
    the New England market depended on the fact that LSEs were
    free to satisfy their capacity obligations by building their own
    capacity or entering into long-term bilateral contracts. N.J.
    Reply Br. 11 n.23. But there is no indication in Maine Public
    Utilities Commission that this was essential to FERC’s
    jurisdiction in that case. Indeed, the court in Maine Public
    Utilities Commission noted that “[t]he protracted litigation
    over Must-Run agreements, the locational installed capacity
    market, and the Forward Market is fundamentally a dispute
    over the rates that will be paid to suppliers of capacity”, a
    53
    FERC’s enumerated reasons for approving the
    elimination of the state-mandated exception relate directly to
    the wholesale price for capacity, which is squarely, and
    indeed exclusively, within FERC’s jurisdiction. See 
    id. at 484
    (“Where capacity decisions about an interconnected bulk
    power system affect FERC-jurisdictional transmission rates
    for that system without directly implicating generation
    facilities, they come within the Commission’s authority.”). 23
    concern squarely within FERC’s jurisdiction. Me. 
    PUC, 520 F.3d at 479
    .
    23
    The remaining cases cited by New Jersey do not dictate
    otherwise. Pacific Gas & Electric Co. v. State Energy
    Resources Conservation & Development Commission, 
    461 U.S. 190
    (1983) dealt with a state’s authority to halt the
    construction of new nuclear plants for environmental reasons.
    While noting the multiple aspects of power generation over
    which states retained control, the Court specifically excepted
    “the broad authority of the . . . Federal Energy Regulatory
    Commission, over the need for and pricing of electrical power
    transmitted in interstate commerce. . . .” 
    Id. at 205.
    Nor is
    Otter Tail Power Co. v. Federal Power Commission, 
    473 F.2d 1253
    (8th Cir. 1973), helpful to New Jersey’s argument,
    as FERC is not requiring the state to enlarge its generating
    facilities or to purchase standby facilities. Finally, FERC’s
    opinion in Ameren Energy Marketing Co., 96 FERC ¶ 61,306
    (Sept. 14, 2001) is in no way contrary to our holding here. In
    that opinion, FERC clarified that its previous order approving
    market-based rates in a contract for the sale of capacity
    between affiliates did not preclude the Missouri Public
    Service Commission from inquiring into the reasonableness
    of the public utility’s decision to enter into the contract with
    54
    New Jersey Petitioners argue that, unlike in Connecticut
    DPUC, “FERC here interferes directly and materially with
    state efforts to sponsor new capacity resources precisely
    because those efforts could affect market prices.” N.J. Reply
    Br. 15. New Jersey Petitioners are wrong; what FERC has
    actually done here is permit states to develop whatever
    capacity resources they wish, and to use those resources to
    any extent that they wish, while approving rules that prevent
    the state’s choices from adversely affecting wholesale
    capacity rates. 24 Such action falls squarely within FERC’s
    jurisdiction.
    its affiliate. The language in Ameren that “wholesale
    ratemaking does not, as a general matter, determine whether a
    purchaser has prudently chosen from among available supply
    options”, meant simply that FERC does not dictate the
    particular supplier from which a buyer must purchase
    capacity.
    24
    Cross-Petitioners P3 urge that “affecting capacity rates is
    precisely what New Jersey and Maryland intended to do”
    with their state initiatives. See P3 Br. 66 and n.16. It is not
    necessary for us to pass upon whether the states’ intention
    was valid, as neither New Jersey nor Maryland contest that
    their initiatives would affect clearing prices in the base
    residual auction. The states’ intent is not relevant for
    purposes of FERC’s jurisdiction or the reasonableness of the
    agency’s actions. See November 17 Order ¶ 3 (Joint App.
    105-06) (“Our intent is not to pass judgment on state and
    local policies and objectives with regard to the development
    of new capacity resources or unreasonably interfere with
    those objectives. We are forced to act, however, when
    subsidized entry supported by one state’s or locality’s policies
    55
    b.    Whether the Elimination of the
    State-mandated Exemption was Arbitrary and Capricious
    Having concluded that accepting PJM’s elimination of
    the state-mandated exemption was within FERC’s
    jurisdiction, we now turn to whether the agency has
    adequately justified its reasoning for rescinding the
    exemption it previously deemed “just and reasonable” at the
    very moment states began to make use of it.
    As an initial matter, New Jersey claims a procedural
    defect in FERC’s elimination of the state-mandated
    exemption.      New Jersey urges that FERC improperly
    eliminated the exemption as part of its review process under
    the guise of § 205, whereas this effected a change that could
    only be accomplished under § 206 based on a finding that the
    prior provision was “unjust and unreasonable.” Because PJM
    did not actually propose to eliminate the exemption entirely—
    but just made it subject to FERC review—New Jersey urges,
    FERC could not accept one part without the other.
    FERC responds that it was correct in applying the §
    205 “just and reasonable” standard to each part of PJM’s
    proposal—both the elimination of the existing exemption and
    PJM’s proposed replacement mechanism—and was therefore
    entitled to accept the former and reject the latter. Moreover,
    the elimination of PJM’s provision for FERC to assess the
    adequacy of a state’s procedures was inconsequential since
    the right to petition the Commission under § 206 for an
    has the effect of disrupting the competitive price signals that
    PJM’s RPM is designed to produce, and that PJM as a whole,
    including other states, rely on to attract sufficient capacity.”).
    56
    exemption from the rules was preserved in any event as a
    statutory right. We agree with FERC because the agency’s
    refusal to adopt PJM’s replacement mechanism does not limit
    states in any way that they would not otherwise be limited if
    FERC had accepted PJM’s proposal in full. But in any case,
    we need not decide whether FERC is entitled to parse a
    particular proposal contained in a tariff filing and analyze
    each part under § 205’s “just and reasonable” standard
    because, as we explain below, we hold that FERC acted
    reasonably in eliminating the state-mandated exemption
    under either § 205 or § 206.
    New Jersey and Maryland strenuously object to the
    elimination of the state-mandated exemption as arbitrary and
    capricious and an unjustified departure from the terms of the
    2006 settlement that created the Reliability Pricing Model.
    New Jersey insists that “fostering development of the selected
    [state-mandated] resources would address New Jersey’s
    reliability concerns while furthering the state’s environmental
    and economic goals.” N.J. Br. 6; see also Md. Br. at 6
    (“[T]he Maryland PSC submitted extensive, uncontested
    evidence” regarding the state’s “serious and significant long-
    term reliability needs . . . .”). It is necessary, the states argue,
    that these new resources be offered into PJM’s auction at
    below-cost prices to ensure that they will clear. New Jersey
    Petitioners claim that the new, gas-fired resources it seeks to
    build are needed to address New Jersey’s capacity deficiency,
    and are “valuable enough to warrant long-term contracts even
    if the resources might not be—in the short run—the cheapest
    options available.” 
    Id. at 8.
    In other words, the states
    acknowledge that their selected resources might not be
    economic—that is, they might not be able to clear the PJM
    auction if offered at a price reflecting cost. Nevertheless, the
    57
    states assert that the new capacity they seek to build is
    justified, arguing that new resources “are developed for many
    reasons, including meeting non-cost environmental, siting and
    infrastructure goals.” N.J. Reply Br. 13 n.26; see also Md.
    Reply Br. 6 (“FERC’s refusal to consider . . . non-cost factors
    . . . constitutes arbitrary and capricious decision-making.”).
    Despite its admission that the new generating plants it
    seeks to build may not be the lowest cost option, New Jersey
    persuasively argues that “every fact that FERC identifies as
    rendering the existing tariff unjust and unreasonable was
    present when FERC approved the state exemption.” N.J. Br.
    at 21. Though FERC cites the New Jersey and Maryland
    initiatives as evidence that the possibility of price suppression
    as a result of the state-mandated exemption was no longer
    merely “theoretical”, FERC does not explain why it failed
    initially to foresee that providing state-mandated resources
    with an exemption to the MOPR would lead states to
    structure their contracts in a way that would result in the
    suppression of clearing prices. 25
    25
    When the original state exemption was adopted, P3
    members raised the possibility that states would mandate new
    reliability projects that could reduce clearing prices far below
    cost and urged that the MOPR did not sufficiently address
    this problem. (Joint App. 2993) Opponents also discussed
    pending efforts by the state of Connecticut to procure new
    capacity, which was to be bid into New England’s capacity
    market at low, subsidized prices. (Id. at 2478-79) These
    facts demonstrate that FERC was aware of possible price
    suppression concerns relating to the state exemption, but
    nonetheless found PJM’s tariff, including the exemption, just
    and reasonable. (Id. at 2480-81)
    58
    Though we are not unsympathetic to New Jersey’s and
    Maryland’s arguments that they reasonably relied on the
    availability of the state-mandated exemption in contracting
    for the construction of new capacity resources, we find no
    fault with FERC’s ability to, and reasons for, eliminating the
    state-mandated exemption. Courts have repeatedly held that
    an agency may alter its policies despite the absence of a
    change in circumstances. See Motor Vehicle Mfrs. Ass’n of
    United States, Inc. v. State Farm Mut. Auto. Ins. Co., 
    463 U.S. 29
    , 57 (1983) (“‘An agency’s view of what is in the
    public interest may change, either with or without a change in
    circumstances.’”) (quoting Greater Bos. Television Corp. v.
    FCC, 
    444 F.2d 841
    , 852 (D.C. Cir. 1970)). Accordingly, in
    reviewing FERC’s action here, we ask only whether FERC’s
    factual conclusions were based on substantial evidence,
    whether, taking into account that evidence, each of the
    changes it made to the MOPR in its orders had a rational
    basis and were not arbitrary or capricious, and whether FERC
    adequately explained its reasoning. See Nat’l Cable &
    Telecomms. Ass’n v. FCC, 
    567 F.3d 659
    , 669 (D.C. Cir.
    2009) (“[T]he existence of contrary agency precedent gives
    us no more power than usual to question the Commission’s
    substantive determinations. We still ask only whether the
    Commission has adequately explained the reasons for its
    current action and whether those reasons themselves reflect a
    ‘clear error of judgment.’”) (quoting DirecTV v. FCC, 
    110 F.3d 816
    , 826 (D.C. Cir. 1997)). See also Elec. Consumers
    Res. Council v. FERC, 
    407 F.3d 1232
    , 1239 (D.C. Cir. 2005)
    (court’s deference to FERC on complex rate market design
    “is based on the understanding that the Commission will
    monitor its experiment and review it accordingly.”).
    59
    With our limited scope of review in mind, we conclude
    that FERC sufficiently explained its reasoning for eliminating
    the state-mandated exemption as unjust and unreasonable.
    FERC’s decision rested mainly upon the “mounting evidence
    of risk” that the state-mandated exemption could permit
    uneconomic entry into the RPM capacity market. Such
    “mounting evidence” was sufficient, FERC said, to cause the
    agency to reconsider its prior approval of the exemption in
    the 2006 RPM settlement. See FERC Br. 50:
    Thus, the actual prospect of
    thousands of megawatts of new
    generation, developed under
    arrangements       that     would
    explicitly subsidize the resources
    regardless of Auction price,
    potentially being offered into the
    Reliability Market at a zero bid
    brought into focus the distortive
    effect—no longer “theoretical”—
    that the state exemption could
    have on market prices for all
    capacity.
    In the April 12 Order, FERC explained that “[b]ecause
    below-cost entry suppresses capacity prices . . . [it was]
    statutorily mandated to protect the RPM against the effects of
    such entry.” April 12 Order ¶ 143 (Joint App. 68). FERC
    further noted its agreement with its Independent Market
    Monitor that “permitting a state exemption may in fact, over
    the long run, result in less investment in capacity and
    demand-side resources and the need in the future for
    additional subsidies from the state.” November 17 Order ¶ 97
    60
    (Joint App. 132). In addition, FERC took into particular
    consideration the concern, as expressed by the Pennsylvania
    Public Utility Commission, that the state exemption could
    adversely affect other states that wished to rely on prices in
    the capacity market to incentivize new entry, as opposed to
    relying on state subsidies. See April 12 Order ¶ 142 (Joint
    App. 67-68); November 17 Order ¶ 96 (Joint App. 132). In
    sum, FERC noted that while its “intent [was] not to pass
    judgment on state and local policies and objectives with
    regard to the development of new capacity resources, or
    unreasonably interfere with those objectives”, the agency was
    “forced to act, however, when subsidized entry supported by
    one state’s or locality’s policies has the effect of disrupting
    the competitive price signals that PJM’s RPM is designed to
    produce, and that PJM as a whole, including other states, rely
    on to attract sufficient capacity.” November 17 Order ¶ 3
    (Joint App. 106).
    In addition, FERC adequately responded to various
    arguments against eliminating the exemption. In response to
    arguments from New Jersey and Maryland that eliminating
    the state exemption would do away with a state’s bargained-
    for ability to generate resources the state believed the RPM
    process had failed to provide, FERC noted that “any state is
    free to seek an exemption from the MOPR under section
    206,” if it believes that the resources available through RPM
    are not adequately fulfilling its capacity needs. See April 12
    Order ¶ 143 (Joint App. 68). FERC opined that the states’
    right to petition for an individual exemption under § 206
    preserved their ability to provide for new generation entry
    while avoiding interfering with FERC’s “duty under the FPA
    to assure just and reasonable rates in wholesale markets.” 
    Id. In response
    to concerns about timing, FERC pointed out that
    61
    states are free to file for an exemption under § 206 prior to
    initiating the process to select new resources. November 17
    Order ¶ 99 (Joint App. 133). In response to arguments from
    various parties, including Petitioners in this case, that the
    RPM’s emphasis on cost alone ignored other important state
    objectives, including “environmental or technological goals,
    [and] reliability concerns beyond a three-year forecast,”
    FERC invited PJM stakeholders to propose a solution. See
    November 17 Order ¶ 90 (Joint App. 130): “If PJM market
    participants agree that RPM should account for resource
    attributes that reflect broader objectives than three-year
    forward reliability, then PJM and its stakeholders should
    begin a process to consider how to incorporate these features
    into RPM’s market design.” 
    Id. However, FERC
    counseled
    that such solution must not “undermine the objective of RPM
    to procure the least-cost, competitively-priced combination of
    resources necessary to meet the region’s reliability objectives
    on a three-year forward basis.” 
    Id. We note
    briefly that our conclusion that FERC’s
    elimination of the state-mandated exemption was justified
    does not rely upon the existence or availability of the FRR
    alternative. In its Orders, FERC pointed out that states and
    LSEs “seeking full independence in resource procurement
    choices” could opt out of the RPM altogether through the
    FRR, and forego the opportunity to purchase or sell any
    capacity through the RPM market. See, e.g., April 12 Order ¶
    137 (Joint App. 65); 
    id. at ¶
    193 (Joint App. 81) (“The FRR
    option is the alternative for load serving entities that wish to
    secure their own capacity resources outside of a competitive
    62
    market, whether as directed by state-authorized integrated
    resource plans, or pursuant to other considerations.”). 26
    In its briefing and throughout the record, FERC notes
    the existence of the FRR as an “alternative” to the Reliability
    Market in responding to states’ and LSEs’ concerns regarding
    the MOPR. Petitioners New Jersey and Maryland and the
    Load Petitioners all provide convincing evidence, however,
    that the FRR is not a viable alternative for them. 27 FERC
    does not counter this evidence; rather the agency merely
    26
    Exclusion from the RPM market for entities using the FRR
    option is necessary to ensure that sponsoring entities cannot
    take advantage of the market-based nature of the RPM while
    withholding its own supply sources. See April 12 Order ¶
    193 (Joint App. 81) (“To protect the integrity of PJM’s
    wholesale capacity markets under RPM . . . , new self-supply
    seeking to participate in the RPM market must compete with
    other planned generation on the same competitive basis.”);
    see also P3 Br. 81 (“[I]f [the FRR] alternative were designed
    to require procurement of only a subset of the buyers’
    capacity needs, the buyer could segment its purchasing
    activities, reducing the volume of its purchase through RPM
    in order to reduce auction clearing prices, while using the
    FRR process for the remainder.”).
    27
    As 
    noted supra
    , Petitioners argue that, because it requires
    an LSE to demonstrate to PJM that it can use its self-supply
    to meet projected capacity obligations for an entire five-year
    period, and to forego the ability to buy or sell capacity in the
    PJM auctions during that time, the FRR option is a viable
    alternative only for large utilities that still follow the
    vertically integrated model.
    63
    responds that it never indicated that the FRR would be a
    “desirable or appropriate” alternative for all states or LSEs.
    See FERC Br. 39-40. We agree with Petitioners that the
    agency has given short shrift to their arguments that the FRR
    is simply not a feasible alternative for them. But Petitioners
    provide no authority for the proposition that FERC is actually
    required to provide states and LSEs wishing to purchase or
    sell capacity in interstate commerce with an alternative to the
    Reliability Market. Absent such authority, we cannot hold
    that the lack of a feasible alternative that would allow states
    and LSEs to avoid having their capacity sell offers mitigated
    is fatal to FERC’s Orders here.
    FERC’s reasoning repeatedly refers to the economic
    harm that could result from the potential price suppression
    permitted by the state-mandated exemption. The agency
    explicitly cites the “mounting evidence of risk” that the state-
    mandated exemption “could allow uneconomic entry” to the
    RPM. April 12 Order ¶ 139 (Joint App. 66). Although it
    could easily be argued that this danger was foreseeable in
    2006 when the MOPR was first approved, FERC has
    adequately advanced a rationale for its about-face—namely,
    that states were actually structuring contracts for the
    development of new resources in a way that would
    substantially suppress prices, threatening imminent economic
    harm. The speculation has become reality. As such, it cannot
    be said that FERC acted without substantial evidence.
    It is more than mildly disturbing that, by   endorsing a
    state-mandated exemption with perfectly              predictable
    incentives, FERC would allow sovereign states       and private
    parties to be drawn into making complex             and costly
    investments, only to later pull the rug out from    under those
    64
    who were persuaded that the exemption was somehow real.
    That FERC has done so based on little more than the claim
    that the agency had an “ah ha” moment when foreseeable
    outcomes approached fruition only makes matters worse. Our
    power to rein in bureaucratic behavior like this is, however,
    constrained. The “arbitrary and capricious” standard of the
    APA is a high bar indeed, and many agency actions worthy of
    condemnation are not so deficient that they can be said to
    cross it. Such is the case here.
    2.      Automatic Clearance for Self-Supply
    As 
    noted supra
    , prior to the 2011 MOPR reforms at
    issue in this matter, PJM’s tariff provided that, in the Base
    Residual Auction, PJM would accept “first, all Sell Offers in
    their entirety designated as self-supply committed regardless
    of price; (ii) then, all Sell Offers of zero, prorating to the
    extent necessary, and (iii) then all remaining Sell Offers in
    order of the lowest price . . . .” PJM Tariff Attachment DD,
    Section 5.14(h)(4) (emphasis in original). In its original §
    206 filing with FERC, P3 construed this language in PJM’s
    tariff as providing a complete exemption from the MOPR for
    resources designated as self-supply. Accordingly, in its
    revised tariff filing, PJM proposed to delete this subsection.
    PJM claimed that in eliminating this language, it sought
    merely to “clarify” that self-supply offers were not exempted
    from the MOPR. April 12 Order ¶ 184 (Joint App. 78).
    FERC accepted this “clarification”, stating that it “agree[d]
    with PJM that its current tariff does not exempt resources that
    are planned to be self-supply from the MOPR and therefore
    agree[d] that the current revisions do not change the tariff.”
    
    Id. at ¶
    139 (Joint App. 80-81). Furthermore, FERC held,
    “even if this did constitute a change,” the agency “agree[d]
    with PJM that planned generation designated by a load
    65
    serving entity as self-supply should be classified as a capacity
    resource and be subject to an offer floor based on its entry
    costs until it clears in the base residual auction.” 
    Id. (Joint App.
    81).
    Load Petitioners take issue with FERC’s
    characterization of this as a “clarification”. Load Petitioners
    urge that FERC, in approving PJM’s change, has essentially
    set up a straw-man argument by considering and rejecting a
    complete exemption for self-supply from the MOPR. Load
    Petitioners argue that, by gearing its response to an argument
    that self supply investment should receive a complete
    exemption from the MOPR—an argument that Load
    Petitioners never made—FERC failed to address Load
    Petitioners’ real concerns regarding the elimination of
    guaranteed clearance for self-supply. 28 In doing so, Load
    28
    Namely, Load Petitioners contend that FERC’s approval of
    the elimination of guaranteed clearance for self-supply
    “departs from its prior orders that consistently recognized
    self-supply as the preferred capacity source for LSEs” and
    “disregards reasons rational LSEs have long chosen self-
    supply—including long-term cost and revenue benefits,
    increased long-term reliability, economic development, and
    resource diversity.” Load Petitioners’ Br. 12, 21. They
    argue that FERC’s action was in contradiction to FERC’s
    own determination that self-supply offers should not be
    “automatically suspect.” 
    Id. at 20.
    Furthermore, they assert
    that while existing resources are shielded from competition,
    consumers served by self-supplying LSEs may have to pay
    twice for their capacity if the self-supply resources fail to
    clear the auction. Accordingly, as the LSEs see it, FERC’s
    elimination of guaranteed clearance for self-supply provision
    66
    Petitioners argue, FERC acted arbitrarily and capriciously,
    and without substantial evidence.
    Indeed, FERC based much of its reasoning for
    accepting PJM’s elimination of this provision on economic
    arguments that assumed that the language as it previously
    existed might be interpreted to mean that such offers would
    not be subject to price mitigation. See April 12 Order ¶ 195
    (Joint App. 81-82) (“[P]ermitting new self-supply to compete
    as a price-taker in RPM impermissibly shifts the investment
    costs of self-supply to competitive supply by suppressing
    market clearing prices . . . .”); November 17 Order    ¶ 205
    (Joint App. 163) (“[W]e reaffirm the Commission’s finding in
    the April 12 Order that a blanket, across-the-board MOPR
    exemption for resources designated as self-supply would
    allow for an unacceptable opportunity to exercise buyer
    market power and thus could inhibit competitive
    investment.”). 29
    violated antitrust principles by favoring existing competitors.
    
    Id. at 24-30.
    29
    Indeed, in its briefing before this Court, FERC continued to
    assert arguments as to why the MOPR should not afford self-
    supply a complete exemption from mitigation. See, e.g.,
    FERC Br. 4 (describing the issue for review as whether FERC
    reasonably determined “that revising the tariff to clarify that
    the Minimum Offer Price Rule applies to planned resources
    designated as self-supply was just and reasonable”).
    Furthermore, the policy reasons FERC advances against
    guaranteed clearance for self-supply deal with preventing
    artificial price suppression. FERC fails to explain why the
    danger of such price suppression would remain even where
    67
    It was not until the Order on Rehearing that FERC
    addressed Load Petitioners’ arguments that the original
    MOPR guaranteed that self-supply would clear the auction,
    albeit at a potentially mitigated price. See March 15 Order ¶
    27 (Joint App. 192) (dismissing the “assertion that the
    Commission erred by not guaranteeing clearance for all self-
    supply sell offers that receive an adjusted, unit-specific offer
    floor.”). FERC asserted that guaranteed clearance for self-
    supply would not serve the goals of the MOPR, because
    “[s]imply receiving an adjusted unit-specific floor does not
    mean that the market requires that unit at the adjusted floor
    bid. Assuring every unit with an adjusted unit-specific floor
    that it will clear the market could result in PJM rejecting the
    offer from a less expensive unit that otherwise would have
    cleared.” March 15 Order ¶ 28 (Joint App. 193). Even while
    purporting to consider and reject these arguments, however,
    FERC’s Orders never actually addressed the plain language
    of the original MOPR, which unambiguously stated that, in
    Base Residual Auction, PJM must accept “first, all Sell Offers
    in their entirety designated as self-supply committed
    regardless of price”. 30 In approving the removal of that
    provision, FERC eliminated guaranteed clearance for self-
    self-supply offers were subject to the MOPR’s mitigation
    features. 
    Id. 30 Although
    reviewing courts “generally give[] substantial
    deference to [FERC’s] interpretation of filed tariffs, even
    where the issue simply involves the proper construction of
    language . . . we do not defer to FERC’s interpretation when
    the tariff language is unambiguous.” Old Dominion Elec.
    Coop., Inc. v. FERC, 
    518 F.3d 43
    , 48 (D.C. Cir. 2008)
    (internal quotations marks and citations omitted).
    68
    supply offers, fundamentally changing the MOPR’s treatment
    of self-supply, but barely acknowledging that it was making
    any change at all. One strains to accept such scant treatment
    as “reasoned analysis” sufficient to satisfy the demands of the
    APA. See State 
    Farm, 463 U.S. at 57
    (“[A]n agency
    changing its course must supply a reasoned analysis” for the
    change) (internal quotation marks omitted); FCC v. Fox
    Television Stations, Inc., 
    556 U.S. 502
    , 515 (2009) (requiring
    agencies to generally “display awareness” of a change in
    position); Nat’l Cable & Telecomms. Ass’n v. 
    FCC, 567 F.3d at 667
    (an agency departing from its prior position must
    “suppl[y] a reasoned analysis . . . showing that prior policies
    and standards are being deliberately changed, not casually
    ignored.”) (internal quotation marks and citations omitted);
    Greater Bos. 
    Television, 444 F.2d at 852
    (“[I]f an agency
    glosses over or swerves from prior precedents without
    discussion it may cross the line from the tolerably terse to the
    intolerably mute.”). 31
    31
    In contrast to FERC’s light treatment of the issue, PJM
    provided an extensive response to Load Petitioners’
    arguments regarding automatic clearing of self-supply. See
    Answer of PJM to Comments and Protests, March 21, 2011
    (Joint App. 2269-72); see also PJM Intervenor Brief 23-29.
    PJM’s argument is essentially that (1) the provision as it
    existed was ambiguous; and (2) in light of this ambiguity, this
    Court should agree with PJM that the provision did not
    guarantee automatic clearance for self-supply. As to the latter
    point, PJM argues against interpreting the provision to
    guarantee clearance because such interpretation would have
    so contradicted the purposes of the MOPR that it could not
    have possibly been correct. 
    Id. at 28.
    We cannot accept
    PJM’s argument for several reasons. First, as we have
    69
    But while we have concerns about FERC’s decision-
    making process in this regard, we do not have jurisdiction to
    review its action, because while this petition was pending,
    FERC has again changed its stance on the proper treatment of
    self-supply, rendering the Load Petitioners’ challenge moot.
    As 
    noted supra
    , FERC recently approved an exemption to the
    MOPR for self-supply resources. 143 FERC ¶ 61,090 (May
    2, 2013). Specifically, it decided that “providing exemptions
    for resources properly designated as self-supply when they
    meet suitable [requirements] is reasonable.” 
    Id. at ¶
    108.
    Although the Load Petitioners are not satisfied with the new
    exemption, PJM’s treatment of self-supply resources has
    fundamentally changed. Under the 2011 orders challenged
    here, self-supply offers received no special treatment, but
    rather were forced to compete at cost-based prices. Under the
    2013 Order, such offers are exempt from mitigation entirely if
    previously noted, the language of the provision itself,
    requiring PJM to accept “first, all Sell Offers in their entirety
    designated as self-supply committed regardless of price”, was
    not ambiguous. See PJM Tariff Attachment DD, Section
    5.14(h)(4) (emphasis in original). Second, PJM’s claim that it
    would never have provided for guaranteed clearance due to
    the economic inefficiencies of such policy is undermined by
    the fact it has since revised the MOPR to guarantee a more
    extensive exemption than Load Petitioners had originally
    urged. Even if FERC had expressly adopted PJM’s policy-
    based arguments against guaranteed clearing for self-supply,
    we would have a difficult time agreeing that such adoption
    was the subject of a reasoned analysis absent an
    acknowledgment that such treatment constituted a
    fundamental change in the MOPR’s treatment of such
    resources.
    70
    they satisfy proposed “net-short” and “net-long” tests. 
    Id. at ¶
    107. Indeed, in justifying its proposed change to FERC, PJM
    emphasized the importance of protecting “traditional business
    models” by exempting “projects developed as self-supply by
    municipals, cooperative utilities, and vertically integrated
    utilities operating under integrated resource plans developed
    under state-approved rules.” 
    Id. at ¶
    81.
    Such “a fundamental change in the state of affairs”
    renders our review of this issue moot. See Motor & Equip.
    Mfrs. Ass’n v. Nichols, 
    142 F.3d 449
    , 459 (D.C. Cir. 1998).
    The Load Petitioners may still have complaints about PJM’s
    treatment of self-supply, but the nature of that treatment is
    completely different than it was under the challenged orders.
    “The old set of rules, which are the subject of this lawsuit,
    cannot be evaluated as if nothing has changed.” Nat’l Min.
    Ass’n v. U.S. Dept. of Interior, 
    251 F.3d 1007
    , 1011 (D.C.
    Cir. 2001). Rather, because “[a] new system is now in place,”
    
    id., our review
    of the old system would merely be advisory,
    unless the Load Petitioners suffered a redressable injury while
    the old system was in place. See Freeport-McMoran Oil &
    Gas Co. v. FERC, 
    962 F.2d 45
    , 46 (D.C. Cir. 1992)
    (concluding that a case was “plainly moot” because the
    challenged orders had been “superseded by a subsequent
    FERC order, and while the challenged orders were in effect
    petitioners suffered no injury this court can redress”). The
    record does not show any injury-in-fact that the Load
    Petitioners experienced during the 2011 and 2012 capacity
    auctions, and at oral argument the only possible injury they
    could point to was having to briefly negotiate with the
    Independent Market Monitor before their offered resources
    successfully cleared an auction. Although that negotiation
    may have been frustrating to the Load Petitioners, it does not
    71
    amount to “a concrete and particularized invasion of a legally
    protected interest.” Motor & 
    Equip., 142 F.3d at 457
    (citing
    Lujan v. Defenders of Wildlife, 
    504 U.S. 555
    , 560 (1992)).
    Therefore, as “interim . . . events have completely and
    irrevocably eradicated the effects of the alleged violation,” 
    id. at 459,
    we conclude that the Load Petitioners’ challenge to
    FERC’s treatment of self-supply resources is moot.
    3.     Undue Discrimination
    a.     Exemption for Solar and Wind
    Powered Resources
    From its inception, the PJM Reliability Market has
    exempted from the MOPR nuclear, coal and hydroelectric
    generation, permitting those resources to bid zero-price offers
    into the Auction. In the 2011 Orders, FERC accepted PJM’s
    proposal to add wind and solar facilities to this list of
    exemptions. As a result, the only resources subject to the
    MOPR are natural gas-fired technologies. New Jersey, Hess
    Corporation, and Intervenor CPV Power urge that targeting
    only gas-fired resources for mitigation amounts to undue
    discrimination in violation of the FPA. They argue that
    “[b]elow-cost offers from gas, nuclear, hydroelectric, wind, or
    solar facilities all have the same ‘price suppression’ impacts”,
    N.J. Br. 28, and therefore, subjecting only gas-fired resources
    to the MOPR undermines the competitive goals FERC is
    purportedly trying to achieve.
    New Jersey does not attempt to argue that FERC failed
    to justify its decision to apply the MOPR to gas-fired
    resources and not to other types of generation. The state
    admits that FERC “asserts that the characteristics of gas units
    72
    make them more likely to be used as price suppression tools.”
    
    Id. at 28;
    see also 
    id. at 29
    (noting FERC’s recognition that
    gas units “are relatively large and can be developed quickly”).
    New Jersey merely asserts that those very characteristics
    make them useful in abating New Jersey’s energy crisis, and
    therefore are “useless in distinguishing legitimate from
    illegitimate intent.” 
    Id. at 29.
    FERC points out that the FPA prevents only “undue”
    discrimination, and that “according different treatment to
    different classes of entities . . . does not amount to undue
    discrimination under the FPA when the classes are not
    similarly-situated.” November 17 Order ¶ 109 (Joint App.
    135). In the April 12 Order, FERC set out its reasoning for
    sanctioning PJM’s proposal:
    [Gas-fired generators] have the
    shortest development time to
    respond to capacity needs and
    thus are more efficient resources
    to suppress capacity prices. In
    addition, . . . wind and solar
    resources are a poor choice if a
    developer’s primary purpose is to
    suppress capacity market prices.
    Due to the intermittent energy
    output of wind and solar
    resources, the capacity value of
    these resources is only a fraction
    of the nameplate capacity. This
    means that wind and solar
    resources would need to offer as
    much as eight times the nameplate
    73
    capacity of a [gas-fired] resource
    in order to achieve the same price
    suppression effect.
    April 12 Order at ¶ 153 (Joint App. 70); see also
    November 17 Order at ¶ 111 (Joint App. 136) (“In accepting
    PJM’s proposal to subject [gas-fired] resources to the MOPR,
    the Commission’s focus was on those factors that could
    contribute to price suppression.”). FERC also notes that gas-
    fired resources can be constructed within the three-year time
    frame between the auction and the time the resource must be
    put into use. Accordingly, the net incremental costs of a gas-
    fired resource at the time of the first auction in which it
    participates are near its full construction costs. Other
    resources, on the other hand, take longer to build and
    therefore must begin construction well in advance of entering
    the capacity market. By the time they participate in an
    auction, they have much lower incremental costs and would
    therefore have a minimum price floor substantially below full
    construction cost. In addition, the short build time of gas-
    fired resources means that sponsors of such projects are able
    to offer bids which, if they do not clear, may be reassessed or
    abandoned, whereas other resources may already have
    invested significant capital by the time they are required to
    offer their capacity into the auction. For all of these reasons,
    FERC argues, the exempted resources are not similar to gas-
    fired resources; accordingly, the MOPR’s disparate treatment
    of the various types of capacity resources does not constitute
    undue discrimination.
    In sum, FERC fully explained its reasons for
    approving PJM’s proposal to subject gas-fired resources to
    the MOPR while exempting other types of generation; New
    74
    Jersey’s disagreement with FERC’s justification does not
    render the agency’s decision arbitrary and capricious.
    b.     Discrimination     Against     New
    Subsidized Entry
    New Jersey also argues that the new unit-specific
    review process, which permits a seller to justify a sell offer
    below the MOPR trigger threshold based on the resource’s
    competitive cost advantages, permits undue discrimination
    based on the type of subsidy a resource receives. PJM
    provided examples of the types of “competitive cost
    advantages” it would view as legitimately lowering the offer
    price of a resource, including “costs resulting from the
    capacity market seller’s business model, financial condition,
    tax status, access to capital[, . . . and] net revenues that are
    reasonably demonstrated, under the MOPR, to be higher than
    estimated for the MOPR screen.” See November 17 Order ¶
    213 (Joint App. 166). In effect, PJM would “evaluate
    whether a subsidy, grant, or revenue is of the type
    customarily enjoyed by the type of seller at issue and whether
    the cost or revenue item pre-existed RPM.” 
    Id. at ¶
    245 (Joint
    App. 176). On the other hand, PJM would not view as
    legitimately lowering cost “claimed cost savings or revenue
    sources that appear irregular or anomalous, that do not reflect
    arm’s-length transactions, or that are not in the ordinary
    course of the seller’s business.” 
    Id. at ¶
    213 (Joint App. 66).
    Presumably, the state initiatives in New Jersey and Maryland
    would fit into the latter category. New Jersey argues that this
    is unduly discriminatory, because “‘new’ and ‘customary’
    subsidies do not differ in their effects” on competition. New
    Jersey asserts that FERC “wrongly treat[s] a subsidy’s
    vintage as indicating whether it was motivated to suppress
    75
    RPM prices or to accomplish a legitimate purpose.” N.J. Br.
    32.
    Here again, FERC fully explained its reasons for
    permitting PJM, in administering the unit-specific review
    process, to view some methods of cost-savings differently
    from others. FERC notes that “the MOPR was not intended
    to change the long-standing business models parties use to
    support investment in specific capacity procurement
    projects.” November 17 Order ¶ 242 (Joint App. 175).
    FERC agreed with PJM that the unit-specific review process
    “appropriately recognizes varying long-standing business
    structures and practices [such as tax status, access to capital,
    and other advantages customarily enjoyed by that type of
    seller] while also protecting against attempts to exercise
    buyer market power.” 
    Id. at ¶
    244 (Joint App. 175). In other
    words, FERC recognized the desire of generators to retain the
    cost-saving advantages they had traditionally enjoyed since
    before the RPM came into existence, and balanced this desire
    against the danger that some entities would provide “irregular
    and anomalous” subsidies not available to other resources in
    an attempt to exercise buyer market power. FERC’s asserted
    reason for this differing treatment is not arbitrary or
    capricious, and is consistent with its statutory duty to protect
    the integrity of the capacity markets.
    B.     Cross-Petitioners’ Arguments
    1.     Calculation of Energy and Ancillary
    Services Offsets
    76
    PJM’s § 205 filing for the first time defined a method
    for calculating “energy and ancillary services offsets,” which
    are the expected revenues a new generation resource will
    likely earn from the sale of energy and ancillary services.
    These revenues are used to “offset”, i.e., are subtracted from,
    a resource’s estimated construction costs to determine the
    resource’s net CONE—the higher the estimated revenues, the
    lower the net CONE, and therefore the lower the threshold
    used to determine whether a new resource will trigger the
    MOPR. Prior to the 2011 Orders, PJM’s tariff did not
    provide for any method for estimating energy and ancillary
    services offsets. In its § 205 filing, PJM proposed to calculate
    these offsets for a given resource based on the revenues
    earned by the highest-earning resources in the PJM zone
    where the resource is located. This calculation would,
    presumably, lead the resource to be assigned a lower net
    CONE and, consequently, a lower mitigation threshold.
    P3 assails the “zonal” approach as unjust and
    unreasonable. It argues that the artificially low mitigation
    threshold “will . . . permit uneconomic resources to enter,
    clear the Base Residual Auction and artificially suppress
    prices. This outcome is neither administratively necessary
    nor just, reasonable and non-discriminatory.” (Joint App.
    1572) P3 argues that FERC instead should have directed
    PJM to calculate energy and ancillary services offsets using a
    “nodal” approach, which would base expected revenues on
    the actual location of the new resource. 32
    32
    The parties appear to agree that location-specific “nodal”
    data is readily available.
    77
    FERC’s justification for finding PJM’s proposal just
    and reasonable is two-fold. First, FERC asserted that PJM’s
    proposed method for calculating revenues is consistent with
    the existing VRR Curve guidelines, which are used to
    construct the simulated demand curve used in PJM’s capacity
    auctions. See November 17 Order ¶ 30 (Joint App. 113)
    (“[W]e find that use of zonal LMPs, rather than nodal LMPs,
    for the MOPR screens is appropriate, given this
    methodology’s consistency with PJM’s existing VRR Curve
    guidelines.”). P3 asserts that this justification for using the
    zonal approach must be rejected because the zonal
    methodology is not actually the same as that used to construct
    the VRR curve, and notes that PJM itself described the zonal
    approach as an “adjustment” to the VRR Curve guidelines.
    See P3 Br. 48. FERC responds that it did not condition its
    approval on the new approach being identical to the VRR
    Curve guidelines; rather it noted that PJM’s proposed
    approach was “consistent” with the guidelines, and indeed it
    expressly approved PJM’s proposed “adjustment” from the
    guidelines’ approach. FERC Br. 81. Furthermore, FERC
    argues that P3 waived this argument by failing to raise it on
    rehearing. P3 disagrees that it waived the argument, stating
    that the April 12 Order did not sufficiently put P3 on notice
    that consistency with VRR Curve guidelines was a basis for
    FERC’s approval of the zonal approach, and therefore P3
    could not have been expected to contest this rationale on
    rehearing.
    We agree with P3 that FERC did not clearly tie the
    VRR Curve consistency justification to the zonal approach in
    the April 12 Order, and therefore P3’s argument is not
    waived. We further agree with P3 that the zonal approach
    appears to be no more “consistent” with the methodology
    78
    used in the VRR Curve guidelines than P3’s proposed nodal
    approach. However, FERC advanced an additional rationale
    for finding PJM’s proposed zonal approach just and
    reasonable, and for rejecting P3’s preferred approach.
    Namely, FERC urged that “the use of nodal LMP values
    could trigger the market power screen even though the
    resource was simply using its historical energy and ancillary
    services revenues offset for its zone.” April 12 Order ¶ 47
    (Joint App. 41). In other words, FERC agreed with PJM that
    the methodology for calculating energy and ancillary services
    offsets—a calculation that is, after all, merely an estimate—
    should make it easier, and not more difficult, for a resource to
    avoid mitigation.
    P3 argues that structuring the calculation to permit
    more resources to pass the MOPR screens “is not a proper
    objective”. P3 Br. 45. However, P3 fails to explain why
    erring on the side of allowing more resources to avoid
    mitigation is not a permissible policy. Surely FERC is
    permitted to weigh the danger of price suppression against the
    counter-danger of over-mitigation, and determine where it
    wishes to strike the balance. See NRG Power Marketing,
    LLC v. FERC, 
    718 F.3d 947
    , 961 (D.C. Cir. 2013) (declining
    to “review FERC’s balancing of competing interests”);
    Sacramento Mun. Util. 
    Dist., 616 F.3d at 541-42
    (upholding
    FERC’s tariff order where the agency “reflected on the
    competing interests at stake to explain why it struck the
    balance it did”).
    P3 may be correct that basing energy and ancillary
    services offsets on a resource’s actual location results in a
    more accurate calculation of net CONE. However, the fact
    that there may be a better, or more accurate, calculation does
    79
    not render PJM’s proposal unjust or unreasonable, or FERC’s
    approval of it arbitrary and capricious. FERC noted as much
    in its November 17 Order, stating that “[t]here may be more
    than one method that provides a reasonably accurate forecast
    of future revenues over time. The relevant question here is
    whether PJM’s proposed method is likely to provide a
    reasonably accurate forecast.” 33 November 17 Order ¶ 28
    33
    In the November 17 Order, FERC stated that it was “not
    required to consider whether additional, alternative
    approaches might also have been reasonable.” November 17
    Order ¶ 30 (Joint App. 113). According to P3, this statement
    indicates that FERC had incorrectly characterized its
    proposed approach as a § 206 challenge to PJM’s tariff, as
    conditionally approved on April 12, 2011, and therefore
    inappropriately placed the burden on P3 to demonstrate that
    PJM’s proposal was unjust and unreasonable. P3 cites
    several cases to support the general principle that FERC,
    before choosing a particular course of action, must consider
    facially reasonable alternatives. See P3 Br. at 46-47 and n.12.
    None of the cases cited, however, actually involves FERC’s
    application of the “just and reasonable” standard under § 205,
    pursuant to which a utility proposes revisions to its own tariff,
    and FERC’s review is limited to determining whether the
    utility’s preferred revision is just and reasonable. FERC
    denies that it construed P3’s challenge to the tariff revision as
    a § 206 challenge and argues that P3 simply fails to
    understand the burden-shifting mechanism under § 205,
    whereby PJM had the burden of showing that its tariff
    proposal was just and reasonable, after which the burden then
    shifted to P3 to demonstrate that PJM’s proposed approach
    was unjust and unreasonable. FERC determined that PJM
    carried its burden, and P3 did not. We believe that FERC has
    80
    (Joint App. 113). See ExxonMobil Gas Mktg. Co. v. FERC,
    
    297 F.3d 1071
    , 1084 (D.C. Cir. 2002) (“The burden is on the
    petitioners to show that the Commission’s choices are
    unreasonable and its chosen line of demarcation is not within
    a zone of reasonableness as distinct from the question of
    whether the line drawn by the Commission is precisely
    right.”) (internal quotation marks omitted); Serono Labs, Inc.
    v. Shalala, 
    158 F.3d 1313
    , 1321 (D.C. Cir. 1998) (“[C]ourts
    are bound to uphold an agency interpretation as long as it is
    reasonable—regardless of whether there may be other
    reasonable, or even more reasonable, views.”). FERC has
    articulated legitimate reasons for finding PJM’s preferred
    method for calculating energy and ancillary services offsets
    just and reasonable, and that is all that is required to do.
    2.     Single-Auction Clearance Requirement
    Prior to the 2011 MOPR revisions, new resources were
    automatically exempt from mitigation after participating in,
    but not necessarily clearing, one auction. Asserting that such
    allowance “rendered the MOPR toothless,” P3 instead urges
    in its § 206 complaint that a new resource should be required
    to clear two annual auctions. See P3 Br. 49. In support of
    this position, P3 notes that such an approach would closely
    approximate FERC’s recently approved standard for the
    NYISO (the New York area equivalent of PJM). In its § 205
    filing, PJM itself proposed an even stronger rule, by which
    the MOPR would apply to a new resource up to and including
    the second successive annual auction after a resource first
    clears. Finally, PJM’s Independent Market Monitor proposed
    the better argument on this point, and in any case, FERC
    adequately, albeit succinctly, responded to P3’s criticisms.
    81
    a hybrid rule permitting a new resource to clear only one
    auction, as long as it also demonstrated that it was not
    receiving any out-of-market subsidies.
    FERC did not accept any of these proposals in its
    entirety. Rather, FERC decided that a new resource would no
    longer be subject to mitigation after it cleared one auction at
    an offer price near its full cost of entry. FERC’s rationale
    was that a resource that has successfully cleared an auction at
    or near its cost is “needed” by the market and is therefore
    economic. It does not matter, FERC ruled, whether or not the
    resource later receives a subsidy.
    P3 claims that FERC’s decision was arbitrary and
    capricious. First it argues that though FERC purported to be
    adopting the recommendation of the Independent Market
    Monitor, the agency in fact adopted only part of the Market
    Monitor’s recommendation (the one-auction requirement)
    while declining to adopt the other, key part: that the resource
    not receive any subsidies from outside the PJM market. P3
    contends that “[t]hat cherry picking left FERC standing alone,
    adopting a proposal supported by no party, testimony, or
    evidence.” 
    Id. at 51.
    Second, P3 argues that by allowing a
    resource to receive discriminatory subsidies after clearing
    only one auction, FERC is essentially sanctioning the exercise
    of buyer-side market power. Third, P3 asserts that FERC’s
    decision “departs, without reasoned explanation” from the
    rule it recently approved for the NYISO. 
    Id. at 53.
    P3 cites
    testimony from its own expert, who urged that, because
    NYISO’s monthly auctions and PJM’s annual auction are
    both “driven by the requirement to meet peak demand in the
    summer”, NYISO’s rule is “directly analogous” to a two-year
    82
    auction clearing rule. 
    Id. at 54.
    34 P3 argues that FERC’s
    application of a different standard for PJM than the one it
    applied for the NYISO represents a “chang[e] in course,” and
    that FERC must supply a reasonable analysis for the
    differential treatment. See Motor Vehicle Mfrs. 
    Ass’n, 463 U.S. at 57
    .
    FERC has adequately responded to P3’s arguments.
    First, as FERC points out, P3 does not provide any support
    for its suggestion that FERC must adopt a third party’s
    proposal in full in order to meet the “substantial evidence”
    standard. Under § 206, FERC may act on its own accord to
    change any practice that, in its opinion, renders a rate, charge
    or classification unjust, unreasonable, or discriminatory. 16
    U.S.C. § 824e. In doing so, it is free to eschew the proposals
    of other parties and invoke its own expertise, as long as it
    does so in a manner that is not arbitrary or capricious. See
    EarthLink, Inc. v. FCC, 
    462 F.3d 1
    , 12 (D.C. Cir. 2006)
    (“[A]n agency’s predictive judgments about areas that are
    34
    See NYISO Mitigation Enhancements Order, 133 FERC ¶
    61,178. Under the rule FERC originally approved for
    NYISO, resources become exempt after clearing at least
    twelve of the previous 24 monthly auctions. P3 alleges that
    this clearance requirement was also subject to a minimum
    period of six “capability periods”, or approximately three
    years. P3 Br. 53-54. However, FERC asserts that P3
    misunderstands this portion of its ruling, and that FERC
    actually “expressly rejected any minimum” and instead
    “allowed resources to become permanently exempt from
    mitigation after clearing the market for one year (12 monthly
    auctions in the New York market).” FERC Br. 88 (citing 133
    FERC ¶ 61,178 at ¶ 51).
    83
    within the agency’s field of discretion and expertise are
    entitled to particularly deferential review, as long as they are
    reasonable . . . .”) (internal citations omitted) (alteration in
    original)).
    In the 2011 Orders, FERC described the reasons it
    chose to require a new capacity resource to clear one auction
    before escaping mitigation under the MOPR. Namely, FERC
    concluded that “once a new resource has cleared in one
    auction at the offer price floor, the resource has demonstrated
    that it is needed by the market and it is therefore economic.”
    See April 12 Order ¶ 175 (Joint App. 76). FERC believed
    that applying the MOPR after that point “could therefore
    inefficiently discourage the entry of a new capacity that is
    economic.” 
    Id. Furthermore, FERC
    explained its reasons for
    declining to implement the other component of the
    Independent Market Monitor’s proposal because “even if
    discriminatory subsidies are being received, if the resource is
    needed at the MOPR bid then it is a competitive resource and
    should be permitted to participate in the auction regardless of
    whether it also receives a subsidy.” 
    Id. at ¶
    177 (Joint App.
    77). 35 FERC further addressed P3’s arguments at length in
    35
    P3 generally argues that FERC’s one-auction clearing
    requirement is discriminatory because it permits a new
    resource to receive subsidies, and therefore bid into the
    auction at an artificially low cost, only one year after clearing
    its first auction. They argue that allowing a new resource to
    receive discriminatory subsidies in its second auction would
    affect the clearing price in the second year in the same way a
    below-cost offer would have done in the first year the
    resource was implemented. Of course, if FERC had adopted
    P3’s proposal that a new resource escape mitigation after
    84
    the November 17 Order. See November 17 Order ¶¶ 130-133
    (examining how P3’s proposal would function under various
    market conditions and concluding that clearing in one auction
    at a price approximating its full cost of entry demonstrates
    that a new resource is needed by the market and should not be
    subject to further mitigation). See Tenn. Gas Pipeline Co. v.
    FERC, 
    400 F.3d 23
    , 27 (D.C. Cir. 2005) (“The court properly
    defers to policy determinations invoking the Commission’s
    expertise in evaluating complex market conditions.”).
    Nor was FERC required to replicate the standard it
    approved for NYISO. P3 offers no authority for the
    proposition that FERC must apply the same mitigation period
    for all RTOs under its jurisdiction; after all, under § 205,
    these organizations are largely tasked with coming up with
    their own rates, rules, and procedures, subject only to FERC’s
    determination that such rates, rules and procedures are “just
    and reasonable.” 16 U.S.C. § 824d. Indeed, the two RTOs
    employ substantially different auction processes—PJM’s
    clearing two auctions, then such procedure could be criticized
    for permitting discriminatory subsidies in the third year.
    Accordingly, P3’s argument here is less about the number of
    auctions a new resource must clear before being subject to
    mitigation, than a rehashing of its complaints regarding
    FERC’s rejection of the No-Subsidy Off-Ramp. As 
    discussed supra
    , FERC’s decision not to adopt the No-Subsidy Off-
    Ramp was originally one of P3’s five independent challenges
    to FERC’s 2011 Orders. In its 2013 Order, as 
    described supra
    , FERC has now adopted a form of the No-Subsidy Off-
    Ramp. Accordingly, P3 has dropped its challenge to that
    particular part of the 2011 Orders. Its challenge to the one-
    auction clearing rule, however, remains alive.
    85
    capacity auctions are annual (or incremental), while NYISO
    holds auctions on a monthly basis. Accordingly, it would be
    impossible for FERC to apply the exact same mitigation rules
    (with respect to both mitigation period and number of
    auctions a resource is required to clear) in both regions. Nor
    do the decisions cited by P3 indicate that FERC’s approval of
    a different mitigation period for PJM than for NYISO would
    require remand. See P3 Br. 54. None involved an agency’s
    application of differing procedures in different regions, each
    with its own unique circumstances, and each largely tasked
    with formulating its own rules and procedures, subject only to
    the qualification that they be just and reasonable. 36
    36
    Finally, P3 urges us to remand FERC’s orders in light of
    FERC’s subsequent order in Astoria Generating Co. v. New
    York Independent System Operator, Inc., 140 FERC ¶ 61,189
    (2012), where FERC required NYISO to apply a market
    power screen that would subject a capacity resource to an
    offer floor despite the fact that the resource had already
    cleared in several auctions. We are not convinced that
    Astoria is inconsistent with the FERC order at issue here, as
    the capacity resource in that matter had cleared the NYISO
    auctions without being subject to an offer floor. See 
    id. at ¶
    141. On the contrary, the FERC rule at issue here requires
    that a new resource clear the PJM auction at or near its net
    cost of new entry once before escaping mitigation in
    subsequent auctions. In any case, as P3 acknowledges, “[a]n
    agency’s decision is not arbitrary and capricious merely
    because it is not followed in a later adjudication.” Brooklyn
    Union Gas Co. v. FERC, 
    409 F.3d 404
    , 406 (D.C. Cir. 2005)
    (quoting MacLeod v. ICC, 
    54 F.3d 888
    , 892 (D.C. Cir.
    1995)).
    86
    V.
    For the foregoing reasons, we deny the petitions for review of
    the 2011 Orders.
    87
    

Document Info

Docket Number: 11-4245, 11-4405, 11-4486, 11-4487, 12-1085, 12-1086, 12-1764

Citation Numbers: 744 F.3d 74

Judges: Greenaway, Jordan, Rendell

Filed Date: 2/20/2014

Precedential Status: Precedential

Modified Date: 8/31/2023

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