Green Development, LLC v. FERC ( 2023 )


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  •  United States Court of Appeals
    FOR THE DISTRICT OF COLUMBIA CIRCUIT
    Argued March 20, 2023                 Decided July 28, 2023
    No. 22-1108
    GREEN DEVELOPMENT, LLC,
    PETITIONER
    v.
    FEDERAL ENERGY REGULATORY COMMISSION,
    RESPONDENT
    NEW ENGLAND POWER COMPANY, D/B/A NATIONAL GRID,
    INTERVENOR
    Consolidated with 22-1161
    On Petitions for Review of Orders
    of the Federal Energy Regulatory Commission
    Omar Bustami argued the cause for petitioner. With him
    on the briefs was Anthony P. Campau.
    Matthew W.S. Estes, Attorney, Federal Energy Regulatory
    Commission, argued the cause for respondent. With him on
    the brief were Matthew R. Christiansen, General Counsel, and
    Robert H. Solomon, Solicitor.
    2
    MaryAnn T. Almeida argued the cause for respondent-
    intervenor New England Power Company, d/b/a National Grid.
    With her on the brief was David M. Gossett.
    Before: HENDERSON, PILLARD and KATSAS, Circuit
    Judges.
    Opinion for the Court filed by Circuit Judge HENDERSON.
    KAREN LECRAFT HENDERSON, Circuit Judge: Petitioner
    Green Development, LLC (Green Development) is a developer
    of solar generation facilities located in Rhode Island. To
    connect the projects to the electricity grid, Green Development
    sought interconnection with the distribution system of
    Narragansett Electric Company (Narragansett), a public utility.
    Accommodation of the increased flows of electricity required
    certain upgrades to the transmission system owned by
    Respondent-Intervenor New England Power Company d/b/a
    National Grid (NE Power) in order to ensure the continued safe
    and reliable service of Narragansett’s load.
    As the transmission owner, NE Power assigned the costs
    of the transmission system upgrades directly to Narragansett,
    the transmission customer, pursuant to the ISO New England
    Tariff, which governs the provision of transmission service in
    New England. The newly assigned costs were reflected in a
    revised transmission service agreement (TSA) that NE Power
    and Narragansett filed for approval by the Federal Energy
    Regulatory Commission (Commission or FERC). Green
    Development protested the revised TSA, objecting to the
    “direct assignment facility” charge for the upgrades because
    under a separate, state-jurisdictional interconnection
    agreement governing the solar projects, Narragansett will pass
    through to Green Development any costs of the transmission
    system upgrades paid by Narragansett. The Commission
    3
    denied Green Development’s protest and concluded that the
    upgrades’ costs are properly assigned to Narragansett, the sole
    benefitting transmission customer, rather than spread across all
    customers as “network upgrades.”
    Green Development petitions for review of the relevant
    FERC orders. Respondent FERC defends the underlying orders
    as reasonable, as does Intervenor NE Power. As detailed infra,
    each of Green Development’s four grounds for vacatur lacks
    merit. Accordingly, we deny the petitions for review.
    I.    Background
    The Federal Power Act (FPA) grants FERC exclusive
    jurisdiction of the transmission and wholesale sale of electricity
    in interstate commerce. See 
    16 U.S.C. § 824
    (b). To enforce the
    FPA’s requirements that charges made in connection with the
    jurisdictional transmission of electric energy be “just and
    reasonable” and not unduly discriminatory, see 
    id.
     § 824d(a)–
    (b), section 205 requires that utilities file tariffs reflecting their
    rates and service terms with the Commission for review, id.
    § 824d(c). The Commission has exclusive jurisdiction of
    transmission facilities but not of distribution facilities. See id.
    § 824(b)(1). 1
    “In order to foster a more competitive, efficient market for
    electricity,” FERC issued Order No. 888, requiring
    1
    “FERC has jurisdiction over both the interstate transmission
    of electricity and the sale of electricity at wholesale in interstate
    commerce.” Niagara Mohawk Power Corp. v. FERC, 
    452 F.3d 822
    ,
    824 (D.C. Cir. 2006) (citing 
    16 U.S.C. § 824
    (b)(1)). “States retain
    jurisdiction over retail sales of electricity and over local distribution
    facilities.” 
    Id.
     “Thus transmission occurs pursuant to FERC-
    approved tariffs; local distribution occurs under rates set by a state’s
    public service commission.” 
    Id.
    4
    transmission providers to “open their networks to transmission
    customers.” Entergy Servs., Inc. v. FERC, 
    391 F.3d 1240
    , 1243
    (D.C. Cir. 2004); see Promoting Wholesale Competition
    Through Open Access Nondiscriminatory Transmission
    Services by Public Utilities, 
    61 Fed. Reg. 21540
     (May 10,
    1996) (Order No. 888). “To effectuate this introduction of
    competition, FERC required public utilities to ‘functionally
    unbundle’ their wholesale generation and transmission services
    by stating separate rates for each service in a single tariff and
    offering transmission service under that tariff on an open-
    access, non-discriminatory basis.” Midwest ISO Transmission
    Owners v. FERC, 
    373 F.3d 1361
    , 1364 (D.C. Cir. 2004) (citing
    New York v. FERC, 
    535 U.S. 1
    , 11 (2002)). Order No. 888
    encouraged the creation of independent service operators
    (ISOs) to “assume operational control—but not ownership—of
    the transmission facilities owned by its member utilities” in
    order to “provide open access to the regional transmission
    system to all electricity generators at rates established in ‘a
    single, unbundled, grid-wide tariff that applies to all eligible
    users in a non-discriminatory manner.’” 
    Id.
     (quoting Order No.
    888, 61 Fed. Reg. at 21596). As relevant here, ISO New
    England Inc. is the private, non-profit entity authorized by
    FERC “to administer New England energy markets and operate
    the region’s bulk power transmission system.” NSTAR Elec. &
    Gas Corp. v. FERC, 
    481 F.3d 794
    , 796 (D.C. Cir. 2007); see
    generally Emera Me. v. FERC, 
    854 F.3d 9
    , 16 (D.C. Cir. 2017).
    It sets forth its rates for access to the transmission system in the
    ISO New England Transmission, Markets and Services Tariff
    (Tariff). ISO New England Inc., 
    178 FERC ¶ 61,115
     at PP 3–4
    (2022) (February 2022 Order); see J.A. 192. The Tariff
    establishes a two-tier transmission arrangement that integrates
    regional service, provided by ISO New England, with local
    network service, provided by participating transmission
    owners (here, NE Power) under its Schedule 21. February 2022
    Order, 
    178 FERC ¶ 61,115
     at P 3.
    5
    “When power generators build new facilities or update
    their existing facilities, they need to connect those facilities to
    the power grid. That connection in turn often requires
    transmission owners to upgrade their power lines to
    accommodate the power influx.” Am. Clean Power Ass’n v.
    FERC, 
    54 F.4th 722
    , 723–24 (D.C. Cir. 2022) (citing Ameren
    Servs. Co. v. FERC, 
    880 F.3d 571
    , 572 (D.C. Cir. 2018)). To
    determine which entity pays for such transmission upgrades,
    the Tariff distinguishes “Direct Assignment Facilities”—which
    are paid for by the sole benefitting transmission customer, see
    Tariff § I.2.2—from “Network Upgrades” that are for the
    general benefit of all users of the transmission system and
    therefore recovered from all transmission customers
    collectively, see Tariff, Schedule 21-NEP § I.1.16.
    Green Development is building four solar-generation
    projects in Rhode Island, all located at the same address and
    producing roughly 40 megawatts (MW) of power in total.
    February 2022 Order, 
    178 FERC ¶ 61,115
     at P 7. Rather than
    connect directly to NE Power’s higher-voltage transmission
    grid, as is usually done, Green Development sought to
    interconnect its projects to Narragansett’s lower-voltage
    distribution system, which is designed to deliver power to end-
    user customers. See 
    id.
     Narragansett and NE Power, the
    transmission service provider, studied Green Development’s
    proposed projects and concluded that the projects could not be
    safely and reliably connected to Narragansett’s distribution
    system without upgrades to both the existing distribution
    system and the existing transmission system. J.A. 438. The
    transmission upgrades, which are the upgrades sub judice,
    include a new power substation, known as the Iron Mine Hill
    Road substation, and related modifications to existing
    transmission facilities. February 2022 Order, 
    178 FERC ¶ 61,115
     at P 7.
    6
    Pursuant to the Tariff, NE Power, the transmission owner,
    assigned the costs of the transmission system upgrades entirely
    to Narragansett, the transmission customer, as “Direct
    Assignment Facilities.” 
    Id.
     at P 8. Due to Narragansett’s Rhode
    Island state-jurisdictional tariff, however, Green Development
    will ultimately bear the direct assignment facility charges, with
    estimated annual costs of $514,740 (approximately $18 million
    over the life of the projects). See Green Dev., LLC, 
    176 FERC ¶ 61,193
     at P 9 (2021) (Complaint Order).
    In February 2021, pursuant to section 206 of the FPA, 16
    U.S.C. § 824e(b), Green Development challenged the direct
    assignment of the upgrades in a complaint filed with the
    Commission. The Commission concluded that Green
    Development had “not met its burden of proof under section
    206” to demonstrate that the upgrades were not being
    constructed for the sole use or benefit of Narragansett.
    Complaint Order, 
    176 FERC ¶ 61,193
     at PP 54–55; see
    16 U.S.C. § 824e(b) (complainant bears burden of proof to
    support its claim). It also determined, however, that Green
    Development had met its burden to show that the upgrade
    facilities were required to be specified in an agreement (among
    NE Power, Narragansett and ISO New England) before those
    costs could be assessed to Narragansett under the Tariff
    definition of “Direct Assignment Facilities.” Complaint Order,
    
    176 FERC ¶ 61,193
     at P 61. The Complaint Order accordingly
    granted in part and denied in part Green Development’s
    requested relief.
    To comply with the Commission’s ruling that the direct
    assignment facilities be specified in a separate agreement, the
    filing parties submitted a revised TSA to the Commission
    pursuant to section 205 of the FPA, 16 U.S.C. § 824d. February
    2022 Order, 
    178 FERC ¶ 61,115
     at P 12. Green Development
    protested the filing. 
    Id.
     at P 21. In the ensuing proceeding,
    7
    Green Development challenged the amended TSA which, as
    before, directly assigned the upgrades to Narragansett. 
    Id.
    The Commission issued its order approving the amended
    TSA in February 2022. See generally February 2022 Order,
    
    178 FERC ¶ 61,115
    . It concluded that the TSA “is just and
    reasonable and not unduly discriminatory or preferential,” 
    id.
    at P 55; see 16 U.S.C. § 824d, finding in pertinent part that NE
    Power correctly assigned to Narragansett the transmission
    upgrade costs necessary to accommodate the projects, see
    February 2022 Order, 
    178 FERC ¶ 61,115
     at PP 59–63, and
    that certain processes set forth in Schedule 21-Local Service of
    the Tariff were not required, see 
    id.
     at P 64; see also Tariff,
    Schedule 21-Local Service § II.4.b(i).
    Green Development timely filed a request for rehearing.
    Because FERC failed to act within 30 days, the request was
    deemed denied in April 2022. 16 U.S.C. § 825l(a); 
    18 C.F.R. § 385.713
    (f); see ISO New England Inc., 
    179 FERC ¶ 62,035
    (2022) (citing Allegheny Def. Project v. FERC, 
    964 F.3d 1
    (D.C. Cir. 2020) (en banc)). Two months later, in June 2022,
    FERC issued an order “modifying the discussion” of the
    denial-of-rehearing order—i.e., explaining the reasons for the
    denial and—unsurprisingly—reaching the same result. ISO
    New England Inc., 
    179 FERC ¶ 61,186
     at P 2 & n.5 (Rehearing
    Order).
    Two petitions for review are consolidated for review.
    Green Development’s first petition seeks review of the
    February 2022 order and the April 2022 denial-of-rehearing
    order. Green Development’s second petition seeks review of
    the June 2022 Rehearing Order. We have jurisdiction of the
    petitions pursuant to section 313(b) of the FPA. 16 U.S.C.
    § 825l(b).
    8
    II.   Analysis
    Under the Administrative Procedure Act, we “shall . . .
    hold unlawful and set aside agency action, findings, and
    conclusions found to be . . . arbitrary, capricious, an abuse of
    discretion, or otherwise not in accordance with law.” 
    5 U.S.C. § 706
    (2)(A). “In a ‘technical area like electricity rate design,’
    we give FERC a significant degree of deference.” La. Pub.
    Serv. Comm’n v. FERC, 
    10 F.4th 839
    , 845 (D.C. Cir. 2021)
    (quoting FERC v. Elec. Power Supply Ass’n, 
    577 U.S. 260
    , 292
    (2016)). “We must accept FERC’s factual findings if they are
    ‘supported by substantial evidence.’” 
    Id.
     (quoting 16 U.S.C.
    § 825l(b)). “We must also defer to FERC’s reasonable
    interpretation of tariffs and of its own prior orders.” Id.
    (citations omitted). As to the Commission’s tariff
    interpretation, we employ a “Chevron-like analysis.” Id. at
    845–46 (quoting PSEG Energy Res. & Trade LLC v. FERC,
    
    665 F.3d 203
    , 208 (D.C. Cir. 2011)). “Under that framework,
    we must enforce unambiguous tariff language, but we defer to
    FERC’s reasonable interpretation of ambiguous text.” 
    Id.
    (citing PSEG, 
    665 F.3d at 208
    ).
    Green Development contends that the Commission
    (1) erroneously concluded that Green Development’s
    arguments in the underlying section 205 proceeding operated
    as a “collateral attack” on the Complaint Order; (2) improperly
    applied the governing seven-factor test to determine its
    jurisdiction of the upgrades, which Green Development
    contends are state-jurisdictional distribution facilities, not
    transmission facilities; (3) misinterpreted the Tariff’s
    definition of “direct assignment facilities”; and (4) erroneously
    failed to apply the filing procedures of Schedule 21-Local
    Service of the Tariff.
    9
    A.    Collateral Attack
    We start with Green Development’s contention that the
    decision under review—the Rehearing Order, 
    179 FERC ¶ 61,186
    —improperly gave preclusive effect to the Complaint
    Order. As noted supra, the Complaint Order granted in part and
    denied in part the relief Green Development’s section 206
    complaint sought. 
    176 FERC ¶ 61,193
    . In the Complaint
    Order, the Commission held in pertinent part that Green
    Development failed to meet its burden on the issue whether the
    transmission system upgrades were for the sole benefit or use
    of Narragansett. 
    Id.
     at P 55. It also held, however, that the
    upgrades were not “Direct Assignment Facilities” under the
    Tariff because they had not yet been specified in a separate
    agreement among ISO New England, NE Power and
    Narragansett. 
    Id.
     at P 61.
    NE Power and ISO New England subsequently filed with
    the Commission the requisite separate agreement, see February
    2022 Order, 
    178 FERC ¶ 61,115
     at P 12; see also J.A. 89
    (adding new Attachment 3 to the TSA to specify the upgrades
    as direct assignment facilities), and this section 205 proceeding
    followed. In the section 205 proceeding, the Commission
    accorded some preclusive effect to the Complaint Order,
    finding that “Green Development’s arguments regarding
    whether the upgrades meet the definition of Direct Assignment
    Facilities represent a collateral attack on the Commission’s
    order in the Green Development Complaint proceeding, and
    therefore we dismiss them.” February 2022 Order, 
    178 FERC ¶ 61,115
     at P 61. It further concluded that Green
    Development’s argument regarding the filing parties’ failure to
    follow Schedule 21-Local Service’s “required” procedures
    represented “a collateral attack on the Complaint Order,” 
    id.
     at
    P 64, as did Green Development’s argument that the
    Commission lacked jurisdiction of the upgrades, 
    id.
     at P 66.
    10
    In its rehearing request, Green Development disputed the
    Commission’s characterization of Green Development’s
    challenge as a collateral attack on the Complaint Order. See
    J.A. 162–65, 171–74; see also Rehearing Order, 
    179 FERC ¶ 61,186
     at P 39. It argued that res judicata and collateral
    estoppel doctrines did not apply because, notwithstanding
    Green Development had the burden of proof in the section 206
    proceeding, see 16 U.S.C. § 824e(b), NE Power had the burden
    of proof in the section 205 proceeding “to show that the
    increased rate or charge is just and reasonable,” id. § 824d(e).
    In the Rehearing Order, however, the Commission clarified its
    February 2022 order, noting:
    In the February 2022 Order, the
    Commission’s ruling did not solely rest on the
    characterization of Green Development’s
    arguments as a collateral attack. In addition, in
    this order the Commission is further addressing
    Green Development’s arguments. Given that
    the Commission has decided each of these
    issues on the merits, we believe we have
    satisfied our obligation under section 205 to
    ensure that the Filing Parties’ revised TSA is
    just and reasonable and not unduly
    discriminatory or preferential.
    Rehearing Order, 
    179 FERC ¶ 61,186
     at P 41 (emphasis
    added). As the Rehearing Order relates that it “has decided
    each of these issues on the merits,” 
    id.,
     we believe the
    Commission has cured any purportedly erroneous ruling that
    Green Development’s section 205 protest constituted a
    collateral attack on the Complaint Order. See BDPCS, Inc. v.
    FCC, 
    351 F.3d 1177
    , 1183 (D.C. Cir. 2003) (“When an agency
    offers multiple grounds for a decision, we will affirm the
    agency so long as any one of the grounds is valid, unless it is
    11
    demonstrated that the agency would not have acted on that
    basis if the alternative grounds were unavailable.”).
    B.    Commission’s Seven-Factor Test
    Next, we review the Commission’s conclusion that the
    upgrades at issue are FERC-jurisdictional transmission
    facilities. To distinguish “Commission-jurisdictional facilities
    used for transmission in interstate commerce” from “state-
    jurisdictional local distribution facilities,” see Order No. 888,
    61 Fed. Reg. at 21626, the Commission has identified seven
    relevant factors, see id., at 21619–20. The factors are:
    (1) local distribution facilities are normally in
    close proximity to retail customers; (2) local
    distribution facilities are primarily radial[2] in
    character; (3) power flows into local
    distribution systems, and rarely, if ever, flows
    out; (4) when power enters a local distribution
    system, it is not reconsigned or transported onto
    some other market; (5) power entering a local
    distribution system is consumed in a
    comparatively restricted geographic area;
    (6) meters are based at the transmission/local
    distribution interface to measure flow into the
    local distribution system; and (7) local
    distribution systems will be of reduced voltage.
    S. California Edison Co., 
    153 FERC ¶ 61,384
     at P 4 (2015).
    2
    A radial line is “a transmission or distribution line that carries
    power in only [one] direction, similar to a one-way street.” Sw.
    Power Pool, Inc., 
    149 FERC ¶ 61,051
     at P 19 (2014) (quotation
    omitted).
    12
    Green Development contends that the Commission “failed
    to give comprehensive consideration as to how the totality of
    the circumstances bears on each of FERC’s seven factors for
    determining whether facilities are FERC-jurisdictional
    transmission facilities or state-jurisdictional distribution
    facilities.” Pet’r Br. 45. 3 The Commission’s Rehearing Order,
    however, comprehensively analyzed and applied each of the
    factors to the identified upgrades. See Rehearing Order,
    
    179 FERC ¶ 61,186
     at PP 15–16 (evaluating factor one),
    PP 17–18 (evaluating factor two), PP 19–20 (evaluating factor
    three), PP 21–22 (evaluating factors four and five), PP 23–24
    (evaluating factor six), PP 25–26 (evaluating factor seven). The
    Commission concluded that six factors indicated FERC-
    jurisdictional status, with only factor six being inconclusive. 
    Id.
    at P 27. We “must accept FERC’s factual findings if they are
    ‘supported by substantial evidence.’” La. Pub. Serv. Comm’n,
    10 F.4th at 845 (quoting 16 U.S.C. § 825l(b)).
    Substantial evidence supports the Commission’s
    conclusion that the upgrades are jurisdictional transmission
    facilities. The Commission explained that the upgrades operate
    at the same voltage as the surrounding transmission
    infrastructure and allow power to flow freely into and out of
    the substation and transmission system. Rehearing Order,
    
    179 FERC ¶ 61,186
     at PP 12, 20, 25; see also February 2022
    Order, 
    178 FERC ¶ 61,115
     at PP 68–70. Moreover, the
    facilities are not connected to end users; rather, they facilitate
    3
    FERC argues that Green Development waived its challenge
    to the jurisdictional status of the upgrades by failing to contest in its
    opening brief the February 2022 order’s ruling that its jurisdictional
    challenge represented a collateral attack on the Complaint Order. See
    Resp. Br. 48–51. As explained supra, however, the Rehearing Order
    read the February 2022 order’s collateral-attack rulings as having
    decided the issue “on the merits.” Rehearing Order, 
    179 FERC ¶ 61,186
     at P 41. The issue is therefore properly before us.
    13
    the movement of power onto a transmission line to serve
    Narragansett’s retail load connected to other transmission
    nodes. Rehearing Order, 
    179 FERC ¶ 61,186
     at P 16. Because
    of this configuration, most of the factors (i.e., voltage, direction
    of power flow, proximity to retail customers, radial or non-
    radial character) support jurisdictional status. The Commission
    also explained that Green Development’s counterarguments
    mainly focused on the lower-voltage 34.5-kV distribution
    feeder connected to the upgrades; it is not designated as a direct
    assignment facility, however, and neither its costs nor its
    jurisdictional status is at issue. 
    Id.
     at P 12; see also February
    2022 Order, 
    178 FERC ¶ 61,115
     at P 68.
    Green Development’s objections do not overcome the
    substantial deference owed the Commission on this technical
    fact question. Regarding factor one, Green Development points
    out that the power routed through the facilities will eventually
    serve Narragansett’s retail load. Pet’r Br. 47–48. But the
    critical issue is proximity to retail customers, see S. California
    Edison, 
    153 FERC ¶ 61,384
     at P 4, not whether power will
    eventually serve them. The Commission reasonably explained
    that the facilities have no proximate connection to retail
    customers because their purpose is to move power onto a
    transmission line. Regarding factor two, Green Development
    asserts that the Commission’s conclusion was insufficiently
    reasoned but provides no affirmative argument that the
    facilities have a radial character. See Pet’r Br. 48–50. We thus
    have no reason to discount the Commission’s conclusion,
    which drew on studies diagramming the upgrades to conclude
    that they are not radial in character. Rehearing Order,
    
    179 FERC ¶ 61,186
     at PP 17–18. Regarding factor three, the
    Commission explained that “[p]ower will flow into the Iron
    Mine Hill Road Substation and associated facilities from the
    34.5-kV distribution feeder and will then flow out onto the H17
    transmission line.” 
    Id.
     at P 20. Green Development faults the
    14
    Commission for failing to quantify these power flows but it
    does not dispute the Commission’s qualitative analysis, which
    shows that the upgrades will handle significant power inflows
    and outflows. The Commission also reasonably explained that
    factors four and five support jurisdictional status because
    power entering the facilities will flow over what are
    concededly FERC-jurisdictional transmission lines before
    being distributed to retail customers. 
    Id.
     at PP 21–22. And
    Green Development offers nothing to cast doubt on the
    Commission’s conclusion that factor seven supports
    jurisdictional status because the facilities operate at the same
    voltage as the surrounding transmission infrastructure. Finally,
    although the Commission acknowledged that factor six is more
    equivocal, 
    id.
     at P 24, it reasonably concluded that the totality
    of the factors favors jurisdiction. The Commission’s
    conclusion was thus supported by substantial evidence.
    C.    Direct Assignment Facilities
    Next, we address Green Development’s challenge to the
    Commission’s conclusion that the transmission system
    upgrades are “direct assignment facilities” under the Tariff’s
    governing definition. As discussed supra, under the Tariff,
    upgrades to a transmission system fall into one of two
    categories: (1) direct assignment facilities, whose costs are
    assessed directly (solely) to the benefitting transmission
    customer; or (2) network upgrades, whose costs are shared
    among the benefitting transmission customers.
    The Tariff treats a facility as a direct assignment facility if
    it meets two criteria:
    (1) it is “constructed for the sole use/benefit of
    a particular Transmission Customer requesting
    service under the OATT [Open-Access
    15
    Transmission Tariff] or a Generator Owner
    requesting an interconnection”; and
    (2) it is “specified in a separate agreement
    among the ISO, Interconnection Customer and
    Transmission Customer, as applicable, and the
    Transmission Owner whose transmission
    system is to be modified to include and/or
    interconnect with the Direct Assignment
    Facilities.”
    Tariff § I.2.2. On review, Green Development challenges only
    the first criterion, arguing that the upgrades cannot constitute
    direct assignment facilities because “those upgrades must be
    caused by and directly attributable to a particular customer
    requesting service.” Pet’r Br. 25 (emphasis in original). Green
    Development relies on the present-participle tense of the
    Tariff’s “requesting service” language, see id. at 24–32, to
    support its position that a direct assignment facility must be
    associated with a “contemporaneous request for transmission
    service.” Id. at 26 (emphasis in original).
    The Commission        rejected    Green    Development’s
    interpretation, holding:
    Although the phrase “Transmission Customer
    requesting service under the OATT” would
    include a new Transmission Customer seeking
    service under the OATT for the first time, we
    think it equally reasonable to read the participle
    phrase “requesting service” in the definition’s
    reference to facilities “constructed for . . . a
    particular Transmission Customer requesting
    service” to equally include an existing
    Transmission Customer that has previously
    16
    formally requested and received service under
    the OATT.
    Rehearing Order, 
    179 FERC ¶ 61,186
     at P 32.
    We first determine whether the Tariff “unambiguously
    addresses” the matter at issue. PSEG, 
    665 F.3d at 208
     (quoting
    Colo. Interstate Gas Co. v. FERC, 
    599 F.3d 698
    , 701 (D.C. Cir.
    2010)). Because the Tariff does not, we “defer to the
    Commission’s construction of the provision at issue so long as
    that construction is reasonable.” 
    Id.
     (quoting Colo. Interstate,
    
    599 F.3d at 701
    ). Here, the Commission’s interpretation is
    reasonable because it properly serves the purpose of direct
    assignment, which “protects all network users from unfairly
    subsidizing facilities that benefit a single user.” S. Co. Servs.,
    Inc., 
    116 FERC ¶ 61,247
     at P 17 (2006). This purpose would
    not be served if a single benefitting transmission customer
    could avoid bearing the costs of the facilities based solely on
    the timing of its transmission request.
    D.    Schedule 21-Local Service Filing Procedure
    Finally, we reject Green Development’s fourth claim,
    namely, that the filing parties failed to file a new application
    for transmission service pursuant to Schedule 21-Local Service
    of the Tariff. See generally Tariff, Schedule 21-Local Service.
    Schedule 21-Local Service sets out the general conditions
    applicable to an eligible customer requesting “Local Network
    Service” from NE Power. Complaint Order, 
    179 FERC ¶ 61,186
     at P 6. Green Development contends that NE Power
    failed to comply with the requirements of Schedule 21-Local
    Service before assessing a direct assignment facility charge for
    the Upgrades. Specifically, Schedule 21-Local Service requires
    a “System Impact Study” (SIS) to be completed to “identify
    any system constraints, additional Direct Assignment Facilities
    or Local Network Upgrades required to provide the requested
    17
    service.” Tariff, Schedule 21-Local Service § II.7.c. And
    section II.4.b(i) of Schedule 21-Local Service provides:
    A Transmission Customer who wishes
    to . . . make upgrades (i.e., increase MWs
    served) within the terms of the existing Local
    Service Agreement under this Schedule 21,
    shall not be required execute [sic] a new Local
    Service Agreement under this Schedule 21,
    however, modifications to the existing Local
    Service Agreement under this Schedule 21 may
    be required. Such modifications to an existing
    Local Service Agreement typically do not
    require an additional Local or Regional System
    Impact Study to be completed. The
    Transmission Customer shall complete (and
    submit to the ISO) an application for Local
    Transmission Service that reflects the requested
    modifications to the Local Service Agreement
    to facilitate revision of its existing Schedule 21
    Local Service Agreement.
    Tariff, Schedule 21-Local Service § II.4.b(i).
    Here, Green Development asserts, Narragansett failed to
    complete and submit an application for Local Transmission
    Service reflecting the revised modifications, i.e., the upgrades
    at issue, to “facilitate revision” of the TSA. Pet’r Br. 38.
    Moreover, Green Development contends, ISO New England
    and NE Power failed to complete the required SIS before
    identifying the direct assignment facility charges in the revised
    TSA. See id.; see also id. at 11–13 (identifying Schedule 21-
    Local Service’s purportedly mandatory process for identifying
    direct assignment facilities). In light of these two deficiencies,
    Green Development contends, the Commission should have
    18
    rejected the revised TSA because the direct assignment facility
    charges constitute a departure from the filed rate. See id. at 38
    & n.10.
    The problem with Green Development’s contention,
    however, is that it presumes that the procedures in Schedule
    21-Local Service, including the completion of both a new
    application for Local Transmission Service and an additional
    SIS, are “mandatory processes” that applied to the filing of the
    TSA. See id. at 38. But, as the Commission explained in the
    Complaint Order, the SIS and associated technical
    arrangements “pertain to initiating transmission service,” and
    “do not demonstrate that Narragansett as an existing
    transmission customer was required to request new
    transmission service” under the Tariff. Complaint Order,
    
    176 FERC ¶ 61,193
     at P 57 (emphasis added). “Further,” the
    Complaint Order observed, “Schedule 21-LS [Local Service]
    contemplates that modifications to an existing service
    agreement ‘may’ be required but are not directed under
    Schedule 21-LS.” 
    Id.
     (quoting Tariff, Schedule 21-Local
    Service § II.4.b(i)) The Commission relied on this reasoning in
    its Rehearing Order. See Rehearing Order, 
    179 FERC ¶ 61,186
    at P 29 & n.79 (citing 
    178 FERC ¶ 61,115
     at P ¶ 64 & n.114);
    see also Entergy Ark., LLC v. FERC, 
    40 F.4th 689
    , 700 n.5
    (D.C. Cir. 2022) (Commission may rely on reasoning in earlier
    orders). The Rehearing Order also iterated the Commission’s
    determination that Green Development “only makes
    unsupported statements that these processes are required in this
    specific instance and have not occurred.” Rehearing Order,
    
    179 FERC ¶ 61,186
     at P 29 & n.80.
    For the foregoing reasons, the petitions for review are
    denied.
    So ordered.