NextEra Energy Resources, LLC v. FERC , 898 F.3d 14 ( 2018 )


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  •  United States Court of Appeals
    FOR THE DISTRICT OF COLUMBIA CIRCUIT
    Argued April 13, 2018                  Decided July 31, 2018
    No. 17-1110
    NEXTERA ENERGY RESOURCES, LLC, ET AL.,
    PETITIONERS
    v.
    FEDERAL ENERGY REGULATORY COMMISSION,
    RESPONDENT
    CPV POWER HOLDINGS, LP, ET AL.,
    INTERVENORS
    On Petition for Review of Orders of the
    Federal Energy Regulatory Commission
    John N. Estes III argued the cause for petitioners. With
    him on the briefs were John Lee Shepherd, Jr., Cara J. Lewis,
    and Abraham Silverman.
    Carol J. Banta, Attorney, Federal Energy Regulatory
    Commission, argued the cause for respondent. On the brief
    were Robert H. Solomon, Solicitor, and Holly E. Cafer, Senior
    Attorney.
    2
    Jason R. Marshall argued the cause for intervenors. With
    him on the brief were Phyllis G. Kimmel, Larry F. Eisenstat,
    Richard Lehfeldt, Clare E. Kindall, and Robert L. Marconi,
    Assistant Attorneys General, Office of the Attorney General
    for the State of Connecticut.
    John N. Moore was on the brief for amicus curiae Natural
    Resources Defense Council, et al. in support of respondent.
    Before: WILKINS, Circuit Judge, and SENTELLE and
    RANDOLPH, Senior Circuit Judges.
    Opinion for the Court filed by Senior Circuit Judge
    SENTELLE.
    SENTELLE, Senior Circuit Judge: A group of power
    generation companies, utility holding companies, and power
    distribution and sales companies petitions for review of four
    Federal Energy Regulatory Commission (“FERC” or “the
    Commission”) orders. ISO New England Inc. (“ISO-NE”), 147
    FERC ¶ 61,173 (May 30, 2014), reh’g denied, 150 FERC
    ¶ 61,065 (Jan. 30, 2015); ISO-NE, 155 FERC ¶ 61,023 (Apr. 8,
    2016), reh’g denied, 158 FERC ¶ 61,138 (Feb. 3, 2017). In the
    orders under review, the Commission approved an exemption
    to the minimum offer price rule in the ISO New England
    forward capacity market for a limited amount of qualifying
    renewable energy. The petitioners argue that the renewable
    exemption creates unjust, unreasonable, and unduly
    discriminatory rates in violation of the Federal Power Act and
    that the Commission was arbitrary and capricious in violation
    of the Administrative Procedure Act. The petitioners also
    contend that the Commission erred by not setting a hearing on
    disputed facts. We conclude that FERC engaged in reasoned
    decision-making to find that the renewable exemption to the
    minimum offer price rule results in a just and reasonable rate.
    3
    Likewise, FERC did not abuse its discretion by denying the
    petitioners’ request for a hearing. Accordingly, we deny the
    petition for review.
    I.     Background
    This case concerns a petition for review of FERC orders
    that carve out an exception to the minimum offer price rule for
    certain qualifying renewable energy resources in the New
    England energy market. The petitioners, NextEra Energy
    Resources, LLC, NRG Power Marketing LLC, GenOn Energy
    Management, LLC, Connecticut Jet Power LLC, Devon Power
    LLC, Middletown Power LLC, Montville Power LLC,
    Norwalk Power LLC, NRG Canal LLC, Energy Curtailment
    Specialists, Inc., PSEG Power LLC, PSEG Energy Resources
    & Trade LLC, and PSEG Power Connecticut LLC
    (collectively, the “Generators”), are power generation
    companies, utility holding companies, and power distribution
    and sales companies that serve the six-state New England
    energy market. The Federal Power Act establishes the
    Commission’s authority to regulate wholesale electric rates,
    such as those determined by the results of the energy markets.
    16 U.S.C. §§ 824d-824e.
    A. The New England Forward Capacity Market
    Regional entities, called “independent system
    operators” or ISOs, operate regional transmission services and
    foster competition in the market by running auction markets for
    energy. See New England Power Generators Ass’n v. FERC,
    
    881 F.3d 202
    , 205-06 (D.C. Cir. 2018). ISO New England Inc.
    is the system operator for the New England region.
    ISO New England administers a forward capacity
    market for the region. It conducts the forward capacity market
    4
    pursuant to rules set out in a jurisdictional tariff approved by
    FERC. The features of ISO New England’s complex forward
    capacity market have been the subject of multiple petitions for
    review. See, e.g., Public Citizen, Inc. v. FERC, 
    839 F.3d 1165
    (D.C. Cir. 2016); New England Power Generators Ass’n v.
    FERC, 
    757 F.3d 283
    (D.C. Cir. 2014) (“NEPGA”);
    Connecticut Dep’t of Pub. Util. Control v. FERC, 
    569 F.3d 477
    (D.C. Cir. 2009); Maine Pub. Utils. Comm’n v. FERC, 
    520 F.3d 464
    (D.C. Cir. 2008) (per curiam), rev’d in part sub nom.
    NRG Power Mktg., LLC v. Maine Pub. Utils. Comm’n, 
    558 U.S. 165
    (2010).
    In the forward capacity market, local utilities contract
    with generators to buy quantities of energy three years ahead
    of their energy needs. With three years’ notice, demand in the
    forward capacity market is able to signal that a new entrant is
    needed while there is still time to develop additional generation
    capability.
    ISO New England sets prices in the forward capacity
    market by administering a forward capacity auction. First, ISO
    New England determines the projected amount of capacity
    (“Installed Capacity Requirement”) that the region will require
    to operate reliably in three years. Next, ISO New England
    holds a descending price auction, in which generators submit
    offers to provide quantities of power at certain prices, three
    years in the future. If the bid capacity at a given price exceeds
    the Installed Capacity Requirement, ISO New England lowers
    the auction price. As the auction price decreases, generators
    offer less capacity to the auction or exit the auction altogether.
    A “clearing price” is reached at the lowest price that yields
    enough supply to meet the Installed Capacity Requirement set
    by ISO New England. All generators that have successfully
    bid in the auction are paid the clearing price for the capacity
    5
    they provide, even if they submitted a bid lower than the
    eventual clearing price.
    The original ISO New England tariff used a “vertical”
    demand curve, specifying a fixed demand that defined the
    capacity sought by the auction. The clearing price was reached
    at the lowest price that met the fixed demand.
    In the orders under review, ISO New England
    implemented a sloped demand curve. The sloped demand
    curve establishes a downward trending relationship between
    price and demand. Price is expressed in the chart as a multiple
    of the net cost of new entry and demand is expressed as a
    reserve margin. Using the sloped demand curve, if the offered
    capacity price is decreased, it corresponds to an increased
    demand. Rather than the New England region procuring
    enough capacity to meet a fixed demand as under the vertical
    demand curve, it procures enough capacity to meet the variable
    demand that is set by the supply prices offered in the auction.
    The clearing price is reached at the point of intersection of the
    supply curve and the demand curve.
    The system-wide sloped demand curve was
    implemented beginning with the auction for the ninth capacity
    year (2018-2019). At the time of this petition for review, ISO
    New England had completed auctions through the eleventh
    capacity year (2020-2021).
    One of the rules in the ISO New England forward
    capacity auction is the “minimum offer price rule.” The
    minimum offer price rule mitigates the potential for the
    improper exercise of market power that can occur if a
    generation resource submits capacity to the auction at a below-
    cost price, suppressing the clearing price. See 
    NEPGA, 757 F.3d at 288-92
    . States and some utilities participate in the
    6
    market as both buyers and sellers of power, giving them the
    opportunity to exercise this type of market power. For
    example, a state-sponsored power generation resource could
    submit a below-cost price offer to the auction, increasing the
    supply of lower priced power, and lowering the clearing price.
    Then, that state, as a net buyer of capacity, benefits by
    purchasing capacity at the resulting artificially low price. The
    minimum offer price rule mitigates this type of market power
    by requiring new resources to submit capacity to the auction
    above a minimum price floor. The minimum price floor is set
    at the approximate net cost of entry of a new generation
    resource.
    The present petition for review concerns an exemption
    to this rule that allows a limited amount of state-sponsored
    renewable generation sources to submit price offers below the
    minimum price floor.
    B. Regulatory History and Orders Under Review
    When the Commission initially approved the minimum
    offer price rule in the ISO New England tariff, it rejected
    proposed exemptions to that rule. ISO New England, Inc., 135
    FERC ¶ 61,029 (Apr. 13, 2011) (“Buyer Market Power
    Order”), reh’g denied in part, 138 FERC ¶ 61,027 (Jan. 19,
    2012). In rejecting a categorical exemption to the minimum
    offer price rule, the Commission reasoned that “uneconomic
    entry can produce unjust and unreasonable prices by artificially
    depressing capacity prices.” Buyer Market Power Order at
    P 170. The Commission stated that the parties could return and
    file a complaint to seek an exemption under section 206 of the
    Federal Power Act. 
    Id. at P
    171. We upheld this order on
    review. NEPGA, 
    757 F.3d 283
    .
    7
    In 2012, intervenor New England States Committee on
    Electricity, Inc. filed a complaint seeking an exemption to the
    minimum offer price rule for certain state-sponsored renewable
    resources. The proposed exemption was driven by the states’
    goals to diversify their energy supply and promote the
    development of renewable energy generation.
    The Commission denied the New England States
    Committee’s complaint. New England States Comm. on Elec.
    v. ISO New England Inc., 142 FERC ¶ 61,108 (Feb. 12, 2013)
    (“New England Complaint Order”), reh’g denied, 151 FERC
    ¶ 61,056 (Apr. 20, 2015). The Commission explained that the
    New England States Committee did not provide any
    evidentiary support that a renewable exemption would have a
    limited price-suppression impact. New England Complaint
    Order at P 34. Also, the Commission distinguished the New
    England States Committee’s request for an exemption from one
    that it approved in the mid-Atlantic market under the PJM
    system operator. 
    Id. at P
    35. The Commission explained that
    “because [the ISO New England] capacity market relies on a
    vertical demand curve while PJM’s capacity market relies on a
    sloped demand curve,” a renewable exemption would have a
    larger price impact in the ISO New England system. 
    Id. On April
    1, 2014, ISO New England filed a package of
    reforms to its tariff under section 205 of the Federal Power Act.
    ISO-NE, Docket No. ER14-1639-000, ISO New England Inc.
    Tariff Filing (Apr. 1, 2014) (“ISO-NE Tariff”). The reforms
    implemented a new system-wide sloped demand curve to
    replace the vertical curves and included a plan for developing
    local sloped demand curves in the future. In the reformed tariff,
    ISO New England included a limited renewable exemption to
    the minimum offer price rule.
    8
    The reformed tariff allows up to 200 megawatts of
    qualifying new entrant renewable capacity to be exempt from
    the minimum offer price rule beginning with the ninth capacity
    year auction. ISO-NE Tariff, pp. 129-30, 143-44. The tariff
    also included a carry-over rule, allowing any unused portion of
    the 200 megawatt renewable capacity to carry forward for two
    additional auctions (three years), up to a total cap of 600
    megawatts. 
    Id. The Generators
    protested the renewable exemption,
    arguing that it was unjust and unreasonable because it will
    undermine competitive entry and result in significant price
    suppression. On May 30, 2014, FERC approved ISO New
    England’s reformed tariff. ISO-NE, 147 FERC ¶ 61,173 (May
    30, 2014) (“Initial Order”). In approving the reformed tariff,
    FERC rejected the Generators’ arguments regarding the
    renewable exemption. Although FERC recognized that
    “exemptions in general can lower prices, the exemption
    proposed here is coupled with a sloped demand curve that will
    limit the impact of price suppression as compared to the
    existing vertical demand curve.” 
    Id. at P
    83. FERC also
    explained that “[t]he renewable resource exemption is also tied
    to load growth . . . , so entry of renewable resources will, in
    most cases, only displace the new entry required to meet load
    growth.” 
    Id. On June
    30, 2014, the Generators requested a rehearing
    on FERC’s approval of the renewable exemption in the ISO
    New England tariff. The Commission denied the Generators’
    request for rehearing on January 30, 2015. ISO-NE, 150 FERC
    ¶ 61,065 (Jan. 30, 2015) (“Rehearing Order”).
    On March 30, 2015, the Generators filed a petition for
    review in this Court. After FERC sought a voluntary remand
    to permit additional consideration of certain arguments, this
    9
    Court granted the request for remand on December 1, 2015.
    NextEra Energy Res., LLC v. FERC, No. 15-1070 (D.C. Cir.
    2015).
    On remand, the Commission directed ISO New
    England to revise its tariff to “provide for the inclusion of zonal
    sloped demand curves in its [Forward Capacity Market] rules,
    to be implemented beginning with the eleventh Forward
    Capacity Auction.” ISO-NE, 153 FERC ¶ 61,338 at P 1 (Dec.
    28, 2015). Then, FERC reaffirmed the renewable exemption
    over the Generators’ objections. ISO-NE, 155 FERC ¶ 61,023
    (Apr. 8, 2016) (“Remand Order”), reh’g denied, 158 FERC
    ¶ 61,138 (Feb. 3, 2017) (“Remand Rehearing Order”). The
    Generators petitioned for review.
    Before briefing was complete, ISO New England
    decided that changing market conditions necessitated phasing
    out the renewable energy exemption. The Commission
    accepted ISO New England’s revised tariff phasing out the
    renewable energy exemption. ISO-NE, 162 FERC ¶ 61,205 at
    PP 25, 99 (Mar. 9, 2018). The revised tariff is not the subject
    of the present petition.
    II.     Analysis
    Under the Federal Power Act, FERC is required to
    ensure that generators provide energy at a “just and reasonable”
    rate. 16 U.S.C. § 824d(a), (e). We review the Commission’s
    final orders under the Administrative Procedure Act. We will
    vacate FERC decisions that are “arbitrary, capricious, an abuse
    of discretion, or otherwise not in accordance with law.” 5
    U.S.C. § 706(2)(A). The Commission’s factual findings will
    be upheld if supported by substantial evidence. 16 U.S.C.
    § 825l(b). “[W]e afford great deference to the Commission in
    its rate decisions” because “‘just and reasonable’ is obviously
    10
    incapable of precise judicial definition.” Morgan Stanley
    Capital Grp. Inc. v. Pub. Util. Dist. No. 1 of Snohomish Cty.,
    
    554 U.S. 527
    , 532 (2008).
    The Generators petition for review of FERC’s orders,
    arguing that the renewable exemption creates an unjust and
    unreasonable rate and that the Commission was arbitrary and
    capricious. Additionally, the Generators contend that the
    Commission should have held a hearing on issues of disputed
    facts.
    A. Did FERC set a “just and reasonable” rate?
    The Generators’ central complaint is that state-
    subsidized renewable resources entering the forward capacity
    market with below-cost prices will suppress the clearing price.
    The Generators argue that any price suppression amounts to a
    subsidy for renewable resources paid for by third-party
    suppliers.
    First, we consider the Generators’ argument that the
    renewable exemption is contrary to the purpose of the forward
    capacity market.         The forward capacity market uses
    “competitive bidding for future capacity contracts” to “both
    incentivize[] and account[] for new entry by more efficient
    generators, while ensuring a price both adequate to support
    reliability and fair to consumers.” Connecticut Dep’t of Pub.
    Util. 
    Control, 569 F.3d at 480
    . In approving the renewable
    energy exemption, the Commission “sought to accommodate
    [state] policy decisions” to develop renewable resources “by
    allowing a limited portion of renewable resources to submit
    bids into the capacity market that are exempt from the
    minimum offer price rule.” Remand Rehearing Order at P 8.
    The Commission acknowledged that renewable “resources will
    be constructed with or without a renewables exemption.”
    11
    Remand Order at P 62. If those resources “are not reflected in
    the [Forward Capacity Market], then the [Forward Capacity
    Market] may send an incorrect signal to construct new capacity
    that is not needed.” Remand Rehearing Order at PP 9, 48. This
    would lead the market to procure redundant capacity. 
    Id. The Commission
    determined that the exemption allowed it “to send
    appropriate price signals regarding where and when new
    resources are needed.” 
    Id. at P
    9. As a result, the Commission
    concluded that “[t]he renewables exemption fulfills [its]
    statutory mandate by protecting consumers from paying for
    redundant capacity.” Remand Order at P 33.
    The Commission must “protect[] . . . consumers from
    excessive rates and charges.” Xcel Energy Servs. Inc. v. FERC,
    
    815 F.3d 947
    , 952 (D.C. Cir. 2016) (quoting Municipal Light
    Bds. of Reading & Wakefield v. FPC, 
    450 F.2d 1341
    , 1348
    (D.C. Cir. 1971)).        We defer to the Commission’s
    determination that the renewable exemption effectuates the
    market’s primary purpose by sending the correct demand
    signals to new entrants and by protecting consumers from
    excessive rates.
    “[S]etting a just and reasonable rate necessarily
    ‘involves a balancing of the investor and the consumer
    interests.’” Wisconsin Pub. Power Inc. v. FERC, 
    493 F.3d 239
    ,
    262 (D.C. Cir. 2007) (per curiam) (quoting Federal Power
    Comm’n v. Hope Nat. Gas Co., 
    320 U.S. 591
    , 603 (1944)). The
    Commission recognized that the renewable exemption has the
    potential to cause price suppression, which is counter to the
    Generators’ interests.       Nonetheless, the Commission
    determined that the renewables exemption “is consistent with
    the purpose of the” Forward Capacity Market, “namely,
    ensuring that price signals are sufficient to incent existing
    resources to stay in the capacity market, and new resources to
    enter, so that ISO [New England] meets its reliability
    12
    requirements at least cost.” Remand Order at P 35. In this
    case, the Commission reasonably balanced the potential for
    limited price suppression against competing interests in
    concluding that the renewable exemption to the minimum offer
    price rule is consistent with the purpose of the forward capacity
    market.
    Next, the Generators argue that allowing price
    suppression contravenes precedent regarding just and
    reasonable rates.        According to the Generators, the
    Commission’s approval of an exemption to the minimum offer
    price rule conflicts with its earlier decision in the Buyer Market
    Power Order to reject a categorical exemption to the minimum
    offer price rule.       In NEPGA, this Court upheld the
    Commission’s rejection of a categorical exemption because the
    Commission “reasonably acted to balance competing interests”
    by “mak[ing] the judgment that encouraging renewable
    energies was less important than allowing such out-of-market
    entrants to depress capacity prices.” 
    NEPGA, 757 F.3d at 295
    .
    Although we deferred to FERC’s decision “to decline a
    categorical mitigation exemption,” 
    id., we never
    held that the
    Commission must always weigh encouraging renewable
    energies as less important than preventing price suppression.
    In the orders under review in this case, the Commission
    has performed an updated balancing of competing interests in
    the New England market. In the Buyer Market Power Order
    proceeding, the Commission explained that “[w]hether to grant
    an exemption is based on each case’s unique facts” and the
    “[p]arties have not provided sufficient specificity to allow us to
    approve an appropriately narrow exemption.” Remand Order
    at P 4 (quoting Buyer Market Power Order at P 171). In this
    case, the Commission considered the price suppression
    associated with the uneconomic entry of a small quantity of
    renewable resources, rather than the categorical exemption it
    13
    had considered previously in the Buyer Market Power Order,
    and weighed it against state policies to promote renewable
    entry. Remand Order at PP 32-36, 39-43, 67-68; Remand
    Rehearing Order at PP 19-29, 67-68. In its evaluation, the
    Commission explained that the new sloped demand curve
    mitigates the price suppression. 
    Id. The Commission
    also
    considered expert testimony stating that any price suppression
    is limited by the renewable qualifying criteria, the low caps on
    the maximum amount exempted renewable capacity, and
    projected load growth and retirements. 
    Id. The Commission
    explained why its view on the renewables exemption evolved
    and why the specific circumstances of this case led it to
    conclude that the renewable exemption is just and reasonable.
    
    Id. Under these
    circumstances, the Commission’s decisions are
    distinguishable from the Buyer Market Power Order, and the
    decisions are not in conflict.
    The Generators also argue that the orders under review
    are unreasonable because they are inconsistent with the
    Commission’s decision to reject a renewable exemption to the
    minimum offer price rule in the New England Complaint
    Order. However, the New England Complaint Order is also
    distinguishable from the present orders because the tariff still
    relied on a vertical demand curve which results in more
    significant price suppression than a sloped demand curve. See
    New England Complaint Order at PP 15, 34-35; Remand
    Rehearing Order at PP 67-68.
    Additionally, the burden of proof is different in the
    present case than in the New England Complaint Order. In the
    New England Complaint Order, the Commission rejected the
    complaint under section 206 of the Federal Power Act.
    Remand Rehearing Order at P 49. Under section 206, the
    complainant had to prove the existing rate was unjust and
    unreasonable without the renewable exemption, and then prove
    14
    that the proposed exemption was just and reasonable. See
    Maine v. FERC, 
    854 F.3d 9
    , 24-25 (D.C. Cir. 2017). The
    present orders under review involve a tariff filing under section
    205 of the Federal Power Act. Under section 205, FERC has
    to prove that it is establishing a just and reasonable rate. See
    
    id. The Commission
    is not required to show that the previous
    rate was unjust and unreasonable in order to demonstrate that
    the revised rate was just and reasonable under section 205. See
    
    id. The New
    England Complaint Order does not constrain the
    Commission from considering that changed circumstances
    now render the renewable exemption just and reasonable.
    Next, the Generators ask the Court to consider a Third
    Circuit decision to affirm the elimination of an exemption to
    the minimum offer price rule in the mid-Atlantic power market,
    but that holding also does not counsel a different outcome in
    this case. See New Jersey Bd. of Pub. Utils. v. FERC, 
    744 F.3d 74
    , 100 (3d Cir. 2014) (“New Jersey”). In New Jersey, the
    Third Circuit considered a Commission order to eliminate a
    broad exemption to the minimum offer price rule that applied
    to any state-mandated resources. 
    Id. at 95.
    New Jersey and
    Maryland planned to submit “thousands of megawatts of new
    capacity” below the minimum offer price floor under this
    exemption. 
    Id. at 96.
    The Third Circuit affirmed the
    Commission’s fact-specific determination that there was
    “mounting evidence of risk” that price suppression would
    distort the market and send the wrong signals regarding the
    need for new entrants to the market. 
    Id. at 100-01.
    Notably, in
    the same decision, the Third Circuit also affirmed a more
    limited exemption for solar and wind resources. 
    Id. at 106-07.
    The Third Circuit concluded that “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.” New 
    Jersey, 744 F.3d at 109
    . We agree. Unlike in
    New Jersey, in this case the Commission found that the danger
    15
    of price suppression was minor compared to other market
    considerations.
    FERC has, at various times, considered exemptions to the
    minimum offer price rule in other markets. See Remand Order
    at PP 32-34. In some cases, the Commission accepted an
    exemption, despite the potential for price suppression. See,
    e.g., New York Pub. Serv. Comm’n, 153 FERC ¶ 61,022 at P 10
    (Oct. 9, 2015); PJM Interconnection, 135 FERC ¶ 61,022 at
    P 152 (Apr. 12, 2011). In some cases, the Commission rejected
    an exemption because of the potential for price suppression and
    market distortions. See, e.g., PJM Interconnection, 135 FERC
    ¶ 61,022 at P 139; New England Complaint Order at PP 32-35;
    New York Indep. Sys. Operator, Inc., 122 FERC ¶ 61,211 at
    P 110 (Mar. 7, 2008).
    In those cases in which the Commission has considered
    exemptions to the minimum offer price rule, it considered
    exemptions using a fact-specific balancing test, factoring in the
    scope of the exemption, the existence of sloped demand curves,
    and the overall impact on the market, and only accepted
    exemptions that were appropriate based on the specific features
    of the market. The Commission engaged in the same type of
    analysis in the present case, and its conclusion is not contrary
    to precedent. This type of balancing requires an expert
    understanding of the market, which is well within the
    Commission’s realm of expertise. We see no reason to disturb
    the Commission’s balancing just because it came out in favor
    of the renewable exemption despite the potential for price
    suppression.
    B. Did FERC engage in reasoned decision-making?
    Now that we have established that an exemption to the
    minimum offer price rule can be just and reasonable under the
    16
    Federal Power Act, we will consider the Generators’ arguments
    that FERC was arbitrary and capricious in its evaluation of the
    renewable exemption.
    First, the Generators argue that FERC acted
    unreasonably because it failed to quantify the price suppression
    resulting from the exemption. We defer to the Commission’s
    reasoning when it relies on substantial evidence to make a
    predictive judgment in an area in which it has expertise, such
    as in the power markets. 
    Wisconsin, 493 F.3d at 260
    . The
    Generators would like the Court to either require a quantitative
    assessment of price suppression or for FERC to explain
    “specifically why it could not have done so.” Sierra Club v.
    FERC, 
    867 F.3d 1357
    , 1374 (D.C. Cir. 2017). In Sierra Club,
    we required a quantitative assessment of greenhouse gas
    emissions, because such an assessment was necessary to
    forecast the environmental impact of the decision under
    review. 
    Id. Price suppression
    is not a scientific determination,
    but rather an economic construct. We permit the Commission
    to base its market predictions on “basic economic theory, given
    that it explained and applied the relevant economic principles
    in a reasonable manner.” Sacramento Mun. Util. Dist. v.
    FERC, 
    616 F.3d 520
    , 531 (D.C. Cir. 2010) (per curiam); see
    also South Carolina Pub. Serv. Auth. v. FERC, 
    762 F.3d 41
    , 65
    (D.C. Cir. 2014) (per curiam).
    The Commission considered the contradictory expert
    testimony that the Generators presented that described and
    quantified potentially severe price suppression. See Remand
    Order at PP 37-44. The Commission credited competing
    expert testimony that predicted the price impact was more
    limited. 
    Id. at P
    P 40-41. The Commission explained that the
    experts’ conclusions differed because they disagreed on the
    predicted steepness of the supply curve, and it rejected the
    Generators’ experts’ assumptions on that topic. 
    Id. It is
    well
    17
    within the Commission’s expertise to resolve conflicting expert
    testimony and make a judgment on which best predicts the
    scope and magnitude of the price suppression.              The
    Commission is not required to rely only on quantitative
    predictions. Accordingly, we conclude that FERC relied on
    substantial evidence in determining that the price suppression
    from the renewable exemption will be minimal.
    Second, the Generators argue that FERC acted
    unreasonably by relying on the sloped demand curve to justify
    its decision. The Generators argue that even though the sloped
    demand curve mitigates the price suppression compared to a
    vertical demand curve, it still results in significant price
    suppression and an unjust rate.
    The Generators’ objection revolves around the
    determination of the point where the supply curve intersects the
    demand curve, which sets the clearing price. When below-cost
    energy is added to the market, it shifts the supply curve to the
    right, so that it intersects the demand curve at a lower clearing
    price. Remand Rehearing Order at P 21. The Generators
    assert that the supply curve is steep where it intersects the
    demand curve. Because it is steep, small rightward shifts to the
    supply curve caused by the introduction of a limited amount of
    below-cost resources result in an intersection with the demand
    curve at a much lower clearing price. See 
    id. at P
    22. The
    Commission agrees that the steepness of the supply curve
    influences the magnitude of the price suppression. However,
    the Commission credited the testimony of an expert witness
    that explained that the supply curves are likely to be flatter than
    the supply curves offered by the Generators’ experts. Remand
    Order at P 41; Remand Rehearing Order at P 25.
    Likewise, the Generators also argue the Commission
    acted unreasonably in accepting ISO New England’s revised
    18
    demand curves and the addition of local sloped demand curves
    upon remand. Generators argue that the new demand curves
    are steeper at the point that they intersect the supply curve than
    the previous demand curves, resulting in greater price
    suppression. The Commission determined that the steepness in
    the new demand curves is mitigated because actual supply
    curves have been flatter than Generators predicted, and, if the
    performance of the demand curves changes over time, there are
    proceedings to review new curves that can address any issues.
    See Remand Order at P 44; Remand Rehearing Order at P 37.
    The Generators object to the inclusion of data from the ninth
    and tenth capacity year in the Commission’s reasoning.
    However, the record was still open at the time the Commission
    considered the Remand Order and the Commission may fairly
    consider the market’s actual performance. 1
    Again, we defer to the Commission’s resolution of
    conflicting expert testimony regarding the relationship
    between the intersection between the supply and demand
    1
    It may appear that the Commission selectively relied on evidence
    of the performance of the supply curves during the ninth and tenth
    capacity year while it simultaneously refused to consider evidence
    that the predicted load growth was not materializing. However, as
    the Commission acknowledged, load growth was lower than
    anticipated during the ninth and tenth capacity years. Remand
    Rehearing Order at P 72. But, the Commission relied on retirements
    in addition to load growth to offset the renewables exemption. The
    Commission considered evidence that the actual retirements in those
    years offset the small amount of exempted renewable energy that
    actually cleared the market even absent load growth. 
    Id. at P
    73. The
    Commission further acknowledged that ISO New England affirmed
    it was committed to revisiting the cap in future years if the load
    growth and retirements failed to offset the entry of exempted
    renewables into the market. 
    Id. at P
    74.
    19
    curves and the clearing price. The Commission reasonably
    determined that price suppression would be minimal because
    sloped demand curves mitigate price suppression.
    Third, the Generators argue that FERC acted
    unreasonably by relying on anticipated load growth and
    retirements to mitigate price suppression. The Commission
    relied on expert testimony predicting that existing generators
    would leave the market and the demand for capacity would
    grow. Therefore, the small amount of renewable resources
    would fill some of this demand while prices remained stable.
    See Remand Order at P 53; Remand Rehearing Order at P 20.
    The Generators counter that load growth failed to occur
    as the Commission anticipated. “[R]easoned decisionmaking
    does not require complete prescience.”           Florida Gas
    Transmission Co. v. FERC, 
    604 F.3d 636
    , 645 (D.C. Cir.
    2010). The Commission relied on the expert predictions that
    were available at the time of its decision, and we defer to its
    use of these predictions.
    The Generators also argue that the Commission did not
    rationally tie the magnitude of the exemption to any particular
    prediction of load growth or retirement. However, FERC
    explained that the 200 megawatt exemption was based on the
    best estimate of load growth, which was “estimated at 189 MW
    annually, plus an adjustment for the reserve margin required to
    meet the installed capacity requirement.” Initial Order at P 83;
    Rehearing Order at P 22. The Commission also acknowledged
    load growth could be more or less than ISO New England
    anticipated, but ISO New England committed to “revisit[ing]
    the cap on the . . . exemption in the future, should the entry of
    [renewable resources] exceed load growth.” Rehearing Order
    at P 22. The Commission acted reasonably in tying the 200
    megawatt exemption caps to load growth estimates.
    20
    With respect to retirements, the Generators argue that
    the retirement rationale was inappropriately raised on remand,
    that uneconomic entry will continue after retirements complete,
    and that its experts found price suppression will occur even
    with retirements. The Commission noted that ISO New
    England had previously predicted 6,500 megawatts of
    retirements by 2020, which is a substantial portion of the
    35,000 megawatt market. Remand Order at P 53; Remand
    Rehearing Order at P 73. More recently, ISO New England
    “estimated that by 2020, resources representing about 30
    percent of regional capacity have committed to cease operation
    or are at risk of retirement.” Remand Order at P 53. The
    Commission observed that the predicted retirements were far
    in excess of the 600 megawatt carry-forward cap, and
    concluded that the exempted renewable energy would only
    make a small impact in replacing retiring resources. 
    Id. Even with
    retirements, the Commission acknowledged the potential
    for minor price suppression. See Remand Rehearing Order at
    P 20. But the Commission is not required to protect against all
    price suppression. The Commission acted reasonably in
    concluding that retirements would help mitigate any price
    suppression.
    Accordingly, we defer to the Commission’s conclusion
    that the renewable energy exemption had only a limited
    potential for price suppression because of the implementation
    of the sloped demand curve, the prediction of a flatter supply
    curve, and predicted load growth and retirements. Therefore,
    we deny the Generators’ petition for review.
    C. The Generators’ request for a hearing
    Lastly, the Generators argue that the Commission
    should have settled issues of disputed fact regarding price
    21
    suppression, load growth, and retirements at a hearing. The
    Commission’s decision on whether to hold a hearing is
    reviewed for abuse of discretion. Louisiana Pub. Serv.
    Comm’n v. FERC, 
    184 F.3d 892
    , 895 (D.C. Cir. 1999). “In
    general, FERC must hold an evidentiary hearing only when a
    genuine issue of material fact exists, and even then, FERC need
    not conduct such a hearing if [the disputed issues] may be
    adequately resolved on the written record.” Minisink Residents
    for Envtl. Pres. & Safety v. FERC, 
    762 F.3d 97
    , 114 (D.C. Cir.
    2014) (quoting Cajun Elec. Power Coop., Inc. v. FERC, 
    28 F.3d 173
    , 177 (D.C. Cir. 1994) (per curiam)).
    In this case, the Commission decided that the material
    facts could be resolved on the written record. Remand
    Rehearing Order at PP 99-100. The extensive written record
    contained expert testimony and analysis regarding the market
    effects of the renewable exemption, the development of the
    sloped demand curve, and predictions for load growth and
    retirements. See 
    id. Accordingly, the
    Commission did not
    abuse its discretion by relying on the written record to resolve
    disputes of material fact on these issues.
    III.   Conclusion
    For the reasons set forth above, the Generators’ petition
    for review is denied.