Sun City v. Acc ( 2020 )


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  •                                 IN THE
    ARIZONA COURT OF APPEALS
    DIVISION ONE
    SUN CITY HOME OWNERS ASSOCIATION, Appellant,
    v.
    ARIZONA CORPORATION COMMISSION, Appellee,
    EPCOR WATER ARIZONA, INC. and VERRADO COMMUNITY
    ASSOCIATION INC., Intervenors.
    No. 1 CA-CC 17-0002
    FILED 1-23-2020
    Appeal from the Arizona Corporation Commission
    No. WS-01303A-16-0145
    AFFIRMED
    COUNSEL
    Ellman Law Group, L.L.C., Phoenix
    By Robert L. Ellman
    Counsel for Appellant
    Arizona Corporation Commission, Legal Division, Phoenix
    By Andrew M. Kvesic, Mareen A. Scott, Naomi E. Davis,
    Stephen Joseph Emedi
    Counsel for Appellee
    Lewis Roca Rothgerber Christie, L.L.P., Phoenix
    By Thomas H. Campbell, Michael T. Hallam
    Counsel for Intervenor Epcor Water Arizona Inc.
    SUN CITY v. ACC
    Opinion of the Court
    Law Office of Michele Van Quathem, P.L.L.C., Phoenix
    By Michele Van Quathem
    Counsel for Intervenor Verrado Community Association Inc.
    OPINION
    Presiding Judge Kenton D. Jones delivered the Opinion of the Court, in
    which Judge James B. Morse Jr.1 joined. Judge Michael J. Brown dissented.
    J O N E S, Judge:
    ¶1           The Sun City Home Owners Association (SCHOA) appeals
    Decision 76162 (the Decision) of the Arizona Corporation Commission (the
    Commission), which consolidated five separate wastewater districts
    operated by EPCOR Water Arizona, Inc. (EPCOR) and imposed an identical
    wastewater rate throughout the newly consolidated district. SCHOA, an
    intervenor in the rate case, argues the consolidated rate is unjust and
    discriminatory, and therefore violates the Arizona Constitution, and is
    unsupported by the evidence. For the following reasons, we affirm.
    FACTS AND PROCEDURAL HISTORY
    ¶2            EPCOR provides wastewater service to the Agua Fria,
    Anthem, Mohave, Sun City, and Sun City West wastewater districts. All
    except Mohave are located within the Phoenix metropolitan area; most are
    geographically distinct and served by separate wastewater treatment
    facilities. EPCOR’s corporate service functions, including accounting and
    customer service, are centralized.
    ¶3             Historically, the Commission set individual rates for each
    district, and monthly wastewater rates have varied substantially, ranging
    from $22.11 per month in Sun City, to $71.16 per month in Agua Fria. The
    rates varied even between districts that use the same wastewater treatment
    facility; before consolidation, Sun City West customers paid $32.46 per
    month, while Agua Fria customers, some of whom were serviced from the
    same facilities, paid $71.16 per month. Ultimately, the customers paying
    1     Judge Morse replaces the Honorable Jon W. Thompson, who passed
    away while this case was pending. Judge Morse has read the briefs,
    reviewed the record, and watched the recording of the June 7, 2018 oral
    argument.
    2
    SUN CITY v. ACC
    Opinion of the Court
    higher rates in the Agua Fria, Anthem, and Mohave districts urged the
    Commission to impose a consolidated rate. See U.S. Envtl. Protection
    Agency & Nat’l Ass’n of Regulatory Utils. Comm’rs, EPA 816-R-99-009,
    Consolidated Water Rates: Issues and Practices in Single-Tariff Pricing vii (Sep.
    1999), https://nepis.epa.gov/Exe/ZyPDF.cgi/200027XN.PDF?Dockey=
    200027XN.PDF (defining a consolidated rate as “the use of a unified rate
    structure for multiple [waste]water . . . utility systems that are owned and
    operated by a single utility, but that may or may not be contiguous or
    physically interconnected”).
    ¶4             In 2014, after several attempts to address the consolidation
    request, the Commission ordered EPCOR to file a rate application that
    included revenue requirements and cost-of-service studies for three
    different scenarios: (1) full consolidation of the five districts into a single
    “Arizona Wastewater” district; (2) the “stand-alone scenario,” whereby the
    five districts would remain distinct; and (3) full deconsolidation, which
    would require separation into seven districts based upon the facility
    serving each area.
    ¶5           EPCOR filed the rate applications in April 2016. In February
    2017, the Commission held a six-day evidentiary hearing on the issue of
    consolidation.
    ¶6            EPCOR, the Commission Staff, and the Agua Fria, Anthem,
    and Mohave districts supported full consolidation. The proponents argued
    consolidation would provide “predictable uniform rate structures, reduc[e]
    regulatory expenses, and increas[e] efficiencies.” They presented evidence
    that many of EPCOR’s operational and administrative activities are
    centralized, and that EPCOR obtains capital and debt financing centrally.
    EPCOR estimated consolidation would save the utility almost $1 million
    over a five-year period, with most of the savings coming from the reduced
    number of rate cases filed with the Commission. EPCOR also specifically
    noted that most of its wastewater pipes in the Sun City district were nearing
    the end of their useful life and would require approximately $57.4 million
    in improvements over the next ten years.
    ¶7         SCHOA and the Residential Utility Consumer Office
    (RUCO) intervened and opposed full consolidation in favor of the stand-
    2
    2      RUCO is the state agency “established to represent the interests of
    residential utility consumers in regulatory proceedings involving public
    3
    SUN CITY v. ACC
    Opinion of the Court
    alone scenario, arguing the consolidated rate would not reflect the actual
    cost to provide services to Sun City residents. The opponents argued
    EPCOR relied too heavily upon speculative projections of Sun City’s
    infrastructure costs and noted EPCOR had also projected spending more
    than $100 million in the other four wastewater districts over the same time
    period. None of the parties supported full deconsolidation.
    ¶8            In a 4-1 decision, the Commission approved full consolidation
    with a five-year phase-in that would affect consumer rates as follows:
    Full Consolidation (5-Year Phase-In)
    District        Current        Year 1 Year 2 Year 3          Year 4    Year 5
    Monthly Bill
    Agua Fria       $ 71.16        $62.44 $56.50 $50.53          $44.55    $ 38.59
    Anthem          $ 60.33        $59.15 $55.39 $51.63          $47.89    $ 38.59
    Mohave          $ 71.07        $57.28 $52.36 $47.44          $42.52    $ 38.59
    Sun City        $ 22.11        $27.13 $29.74 $32.36          $34.98    $ 38.59
    Sun City West   $ 32.46        $37.59 $37.59 $37.59          $37.59    $ 38.59
    SCHOA unsuccessfully applied for a rehearing, see A.R.S. § 40–253(A)3 (“If
    the commission does not grant the application [for rehearing] within
    twenty days, it is deemed denied.”), and SCHOA timely appealed. We
    have jurisdiction pursuant to A.R.S. § 40-254.01(A). On appeal, Verrado
    Community Association, Inc. and EPCOR were both permitted to intervene
    in support of the Commission’s decision.
    DISCUSSION
    I.        Constitutionality of the Consolidated Rate
    ¶9             Arizona’s longstanding public policy regarding monopolistic
    public service corporations, including wastewater companies, “is one of
    regulated monopoly over free-wheeling competition.” James P. Paul Water
    Co. v. Ariz. Corp. Comm’n, 
    137 Ariz. 426
    , 429 (1983) (citing Ariz. Corp. Comm’n
    v. People’s Freight Line, Inc., 
    41 Ariz. 158
    , 165 (1932), and Ariz. Corp. Comm’n
    v. Tucson Ins. & Bonding Agency, 
    3 Ariz. App. 458
    , 463 (1966)). The Arizona
    Constitution grants the Commission “full power to . . . prescribe just and
    service corporations before the corporation commission.” Ariz. Rev. Stat.
    (A.R.S.) § 40-462(A).
    3      Absent material changes from the relevant date, we cite the current
    version of rules and statutes.
    4
    SUN CITY v. ACC
    Opinion of the Court
    reasonable classifications to be used and just and reasonable rates and
    charges to be made and collected, by public service corporations within the
    state for service rendered therein . . . .” Ariz. Const. art. 15, § 3. “‘[J]ust and
    reasonable rates’ are those that are fair to both consumers and public service
    corporations.” Phelps Dodge Corp. v. Ariz. Elec. Power Coop., Inc., 
    207 Ariz. 95
    , 106, ¶ 30 (App. 2004) (citing Ariz. Cmty. Action Ass’n v. Ariz. Corp.
    Comm’n, 
    123 Ariz. 228
    , 231 (1979)).
    ¶10            “The general theory of utility regulation is that the total
    revenue, including income from rates and charges, should be sufficient to
    meet a utility’s operating costs and to give the utility and its stockholders a
    reasonable rate of return on the utility’s investment.” Scates v. Ariz. Corp.
    Comm’n, 
    118 Ariz. 531
    , 533-34 (App. 1978) (citing Simms v. Round Valley
    Light & Power Co., 
    80 Ariz. 145
    , 153 (1956)). When setting rates, the
    Commission first determines the revenue requirement by “finding the ‘fair
    value’ of a utility’s in-state property, and then using that value as the ‘rate
    base’ in the following rate-of-return formula: (Rate Base x Rate of Return) +
    Expenses = Revenue Requirement.” RUCO v. Ariz. Corp. Comm’n, 
    240 Ariz. 108
    , 110, ¶ 6 (2016) (citing Ariz. Const. art. 15, § 14, and US West Commc’ns,
    Inc. v. Ariz. Corp. Comm’n, 
    201 Ariz. 242
    , 245, ¶ 13 (2001)).
    ¶11            Once the Commission has determined the revenue
    requirement, it must then apportion the revenue requirement among the
    various consumer classes. See Freeport Minerals Corp. v. Ariz. Corp. Comm’n,
    
    244 Ariz. 409
    , 411, ¶ 8 (App. 2018). Few Arizona cases discuss what factors
    the Commission should consider when apportioning the revenue
    requirement, but the Commission readily acknowledges that “cost
    causation principles are fundamental to rate design.” Other states’ courts
    agree “that a cost-of-service study is of paramount importance and may
    indeed be a precondition to consideration of a proposed rate design.”
    United States v. Pub. Utils. Comm’n (Newport Elec.), 
    393 A.2d 1092
    , 1096 (R.I.
    1978) (collecting cases); cf. James C. Bonbright, Principles of Public Utility
    Rates 67 (1961), https://www.raponline.org/knowledgecenter/principles-
    of-public-utility-rates/ (“Rates found to be far in excess of cost are at least
    highly vulnerable to a charge of ‘unreasonableness.’”). Accordingly, the
    Commission requires cost-of-service studies as part of any rate application.
    ¶12            The cost of service, however, is but one aspect of setting rates.
    See Freeport, 244 Ariz. at 414-15, ¶ 20 (concluding that a rate design may be
    constitutional even if it “deviate[s] from strict cost of service”); see also In re
    Permian Basin Area Rate Cases, 
    390 U.S. 747
    , 776-77 (1968) (“[R]ate-making
    agencies are not bound to the service of any single regulatory formula; they
    are permitted, unless their statutory authority otherwise plainly indicates,
    5
    SUN CITY v. ACC
    Opinion of the Court
    to make the pragmatic adjustments which may be called for by particular
    circumstances.”) (quotation omitted). The Commission retains broad
    discretion in determining the weight to assign the cost-of-service studies
    and may also consider “economic, social, historical and other factors that
    may affect customers,” which “often result[s] in rates that deviate from
    strict cost of service.” Freeport, 244 Ariz. at 412, ¶ 10; see also Miller v. Ariz.
    Corp. Comm’n, 
    227 Ariz. 21
    , 28, ¶ 30 (App. 2011) (noting the Commission
    may look at “more than ‘setting a fair return on a predetermined value’”)
    (quoting Ariz. Corp. Comm’n v. State ex rel. Woods, 
    171 Ariz. 286
    , 296 (1992)).
    ¶13           SCHOA argues the consolidated rate adopted within the
    Decision violates the Commission’s constitutional obligation to set “just
    and reasonable rates,” because it is not based upon “the bedrock rate-
    making principle of cost-causation” and unfairly prejudices Sun City
    customers. We review de novo whether a Commission decision runs afoul
    of the Arizona Constitution. RUCO, 240 Ariz. at 111, ¶ 10 (citing US West,
    
    201 Ariz. at 244, ¶ 7
    ).4 But “[b]ecause ratemaking is a function specifically
    entrusted to the Commission by the Arizona Constitution, a stringent
    standard of review applies: ‘We generally presume the Commission’s
    actions are constitutional, and we uphold them unless they are arbitrary or
    an abuse of discretion.’” Freeport, 244 Ariz. at 411, ¶ 6 (quoting RUCO, 240
    Ariz. at 111, ¶ 10). Although we are sympathetic to the dissent’s
    reservations regarding the origins of this extreme deference, we are “bound
    by the decisions of our supreme court and must apply the law it has
    declared.” Austin v. Austin, 
    237 Ariz. 201
    , 208, ¶ 21 (App. 2015) (citing
    Bazzanella v. Tucson City Court, 
    195 Ariz. 372
    , 376, ¶ 8 (App. 1999)). Thus,
    we remain mindful of the extreme deference our supreme court has
    traditionally granted to the Commission’s ratemaking authority. See State
    v. Tucson Gas, Elec. Light & Power Co., 
    15 Ariz. 294
    , 306 (1914) (“While it is
    not so named, [the Commission] is, in fact, another department of
    government, with powers and duties as well defined as any branch of the
    4       We reject SCHOA’s suggestion that our analysis begins with strict
    scrutiny review. This Court will apply strict scrutiny to determine whether
    a law which “‘substantially burdens fundamental rights’ or makes
    distinctions based on certain suspect classes” passes constitutional muster.
    See, e.g., Ariz. Minority Coal. for Fair Redistricting v. Ariz. Indep. Redistricting
    Comm’n, 
    211 Ariz. 337
    , 345, ¶ 18 (App. 2005) (quoting Green v. City of Tucson,
    
    340 F.3d 891
    , 896 (9th Cir. 2003)). This analysis is premised upon the
    existence of a substantial burden, 
    id.
     (explaining when different standards
    of review are applied — after differential treatment is identified), which, as
    detailed in ¶¶ 22-23, infra, is not the case here.
    6
    SUN CITY v. ACC
    Opinion of the Court
    government, and where it is given exclusive power it is supreme. Its
    exclusive field may not be invaded by either the courts, the legislative, or
    executive.”); see also Ethington v. Wright, 
    66 Ariz. 382
    , 392 (1948) (“[I]n the
    matter of prescribing classifications, rates, and charges of public service
    corporations . . . the Corporation Commission has full and exclusive
    power.”); US West, 
    201 Ariz. at 246, ¶ 21
     (“The commission has broad
    discretion . . . to determine the weight to be given [the fair value of services]
    in any particular case.”).
    ¶14           In our review, we will accept the Commission’s factual
    findings so long as they are supported by substantial evidence. Simms, 
    80 Ariz. at 154
     (citations omitted). If we determine the Decision is
    constitutional, we will uphold it unless the opponent demonstrates,
    “clearly and convincingly, that the Commission’s decision is arbitrary,
    unlawful or unsupported by substantial evidence.” Freeport, 244 Ariz. at
    411, ¶ 6 (quoting Litchfield Park Serv. Co. v. Ariz. Corp. Comm’n, 
    178 Ariz. 431
    ,
    434 (App. 1994)); see also A.R.S. § 40-254.01(E) (“In all appeals that are taken
    pursuant to this section, the party adverse to the commission or seeking to
    vacate or set aside an order of the commission must make a clear and
    satisfactory showing that the order is unlawful or unreasonable.”).
    A.     The Commission Considered Cost-Causation Evidence.
    ¶15            SCHOA acknowledges the Commission is not strictly bound
    by the cost of service, but argues the Commission failed to even consider
    the cost of service before consolidating the districts here. The record does
    not support this claim.
    ¶16            The record reflects that EPCOR provided cost-of-service
    studies for the full consolidation, stand-alone, and full deconsolidation
    scenarios, as required by the Commission’s order and administrative rules.
    See Ariz. Admin. Code (A.A.C.) R14-2-103(B)(1)(G). The studies were not
    opposed, challenged, or otherwise refuted by any participant and the
    Commission Staff found the studies were “performed consistently with the
    methodology generally accepted in the industry and that the allocation
    factors used had been developed appropriately.”
    ¶17           Additionally, the Decision reflects the Commission carefully
    considered the cost-of-service studies for each proposed scenario. The
    Commission cites information from the cost-of-service studies regarding
    the projected savings to all consumers from a decrease in the number of rate
    7
    SUN CITY v. ACC
    Opinion of the Court
    applications5 under the full consolidation scenario. The Commission also
    found that full consolidation would specifically benefit Sun City customers,
    noting that “[e]ach $1 million capital investment made in Sun City would
    raise a Sun City customer’s monthly bill approximately $0.60 under the
    stand-alone scenario or approximately $0.25 under full consolidation.”
    ¶18           SCHOA relies on one paragraph of the Commission’s two-
    hundred-page Decision to suggest the Commission “redefined cost
    causation in a way that effectively removed it from consideration” and
    “free[d] itself from the shackles of geography and ‘traditional’ cost
    causation.” In that paragraph, the Commission stated:
    It is true that under traditional cost-causation ratemaking, as
    applied to date for EPCOR’s wastewater operations, the costs
    attributable to any particular customer class have been
    considered only within the confines of a specific
    geographically defined wastewater district. . . . [H]owever,
    . . . cost-causation does not need to be viewed in such a
    narrow manner based on geography but can instead be
    considered for customer classes that span across all
    geographic areas in which EPCOR has wastewater
    operations. Thus, full consolidation, . . . would not necessitate
    repudiation of cost-causation principles if all of EPCOR’s
    wastewater systems are viewed as one unit with one set of
    customers who get broken up into classes not constrained by
    geography.
    However, SCHOA cites no authority requiring the Commission to limit its
    evaluation of the cost of service by geography. Nor is any such restriction
    found within Arizona’s Constitution. Accordingly, SCHOA fails to prove
    the Commission violated the Arizona Constitution based upon the weight
    assigned to the cost-of-service evidence.
    B.     The Consolidated Rate is Not Discriminatory.
    ¶19          SCHOA argues the consolidated rate discriminates against
    Sun City customers in violation of the Arizona Constitution and A.R.S. § 40-
    5      The Commission determines rate changes through a proceeding
    called a “rate case.” See generally A.A.C. R14-2-103. Rate cases are long,
    expensive, and complicated, often involving multiple intervening parties,
    thousands of public comments, detailed reports from experts, and multiple
    hearings. See RUCO, 240 Ariz. at 110, ¶ 6.
    8
    SUN CITY v. ACC
    Opinion of the Court
    334. The Arizona Constitution indeed prohibits the Commission from
    “discrimination in charges, service, or facilities . . . between persons or
    places for rendering a like and contemporaneous service.” Ariz. Const. art.
    15, § 12. Thus, in cases involving “like and contemporaneous service,” rate
    parity is not only encouraged, but constitutionally required.6 By statute,
    Arizona likewise prohibits public service corporations from discriminating
    in “rates, charges, service, facilities or in any other respect, mak[ing] or
    grant[ing] any preference or advantage to any person or subject[ing] any
    person to any prejudice or disadvantage,” or “establish[ing] or
    maintain[ing] any unreasonable difference as to rates, charges, service,
    facilities or in any other respect, either between localities or between classes
    of service.” A.R.S. § 40-334(A)-(B).
    ¶20            Unlike the traditional rate discrimination case, where it is
    alleged a utility treats similarly situated customers differently, SCHOA’s
    argument is premised upon its assertion that Sun City customers would be
    charged the same rate as other consumers but receive lower-cost services,
    effectively subsidizing wastewater services in other, geographically distinct
    areas. Taken to its logical conclusion, SCHOA’s argument would require
    different rates for each customer if there is any discrepancy in the cost of
    providing service. We do not interpret the constitutional prohibition on
    “discrimination in charges, services, or facilities . . . between persons or
    places” as mandating different charges based on location. But even
    assuming this novel reverse-rate-discrimination theory could provide a
    basis for relief, SCHOA can only prevail if it establishes as error in the
    Commission’s finding that customers across the newly consolidated district
    receive “like and contemporaneous services.” Although we review
    constitutional claims de novo, we are bound by the Commission’s
    underlying factual findings if supported by substantial evidence. See supra
    ¶¶ 13-14.
    ¶21           SCHOA’s argument focuses on evidence of dissimilarities
    between Sun City and the other districts that suggest consolidation is
    inappropriate. But we do not reweigh evidence; if a conflict exists, “it is the
    Commission’s constitutional responsibility, when engaged in its
    ratemaking power, to view conflicting evidence and make determinations
    accordingly.” Sierra Club — Grand Canyon Chapter v. Ariz. Corp. Comm’n,
    
    237 Ariz. 568
    , 576, ¶ 26 (App. 2015); see also DeGroot v. Ariz. Racing Comm’n,
    
    141 Ariz. 331
    , 336 (App. 1984) (“If two inconsistent factual conclusions
    6      An exception, not applicable here, exists for “the granting of free or
    reduced rate transportation” to qualifying classes of consumers. Ariz.
    Const. art. 15, § 12.
    9
    SUN CITY v. ACC
    Opinion of the Court
    could be supported by the record, then there is substantial evidence to
    support an administrative decision that elects either conclusion.”) (quoting
    Webster v. State Bd. of Regents, 
    123 Ariz. 363
    , 365-66 (App. 1979)) (citation
    omitted); Moore v. Title Ins. Co. of Minn., 
    148 Ariz. 408
    , 413 (App. 1985)
    (concluding substantial evidence may support a factual finding “even
    though there might be substantial conflicting evidence”) (citing Lewis v.
    Midway Lumber, Inc., 
    114 Ariz. 426
    , 429 (App. 1977)).
    ¶22            The Commission resolved conflicting evidence in favor of
    finding that the customers within the consolidated district receive like and
    contemporaneous wastewater services. This determination is supported by
    the record, which contains evidence that all EPCOR customers receive the
    “same exact service . . . the same customer service, . . . the same billing
    systems, . . . [and] the same operations teams” and that the costs for
    operation, maintenance, and administrative tasks are “relatively the same”
    across the districts. Additionally, many of EPCOR’s operational and
    administrative activities are centralized, and EPCOR obtains capital and
    debt financing centrally. The districts also share maintenance personnel,
    who are deployed as needed. Although there was evidence that the
    treatment costs were “a bit higher” in Anthem because its treatment facility
    uses a different technology, its maintenance costs are lower. Additionally,
    although the cost-of-service studies reflected variation between the districts
    under the stand-alone scenario, these differences largely resulted from the
    timing of capital investments, rather than the day-to-day costs of
    administration, treatment, and maintenance.
    ¶23           Because SCHOA has shown no error in the Commission’s
    finding that all customers are charged the same rate for the same services,
    SCHOA fails to prove the Commission set a discriminatory rate in violation
    of the Arizona Constitution or A.R.S. § 40-334.
    Other Challenges to the Consolidated Rate
    ¶24           SCHOA argues the Commission acted arbitrarily and
    capriciously in adopting the consolidated rate. “An agency acts arbitrarily
    and capriciously when it does not examine ‘the relevant data and articulate
    a satisfactory explanation for its action including a rational connection
    between the facts found and the choice made.’” Compassionate Care
    Dispensary, Inc. v. Ariz. Dep’t of Health Servs., 
    244 Ariz. 205
    , 213, ¶ 25 (App.
    2018) (quoting Motor Vehicle Mfrs. Ass’n of U.S. v. State Farm Mut. Auto. Ins.,
    
    463 U.S. 29
    , 43 (1983)). An action is not arbitrary and capricious if there is
    “room for two opinions,” so long as it is “exercised honestly and upon due
    consideration.” Id. at 214, ¶ 29 (quoting Petras v. Ariz. State Liquor Bd., 129
    10
    SUN CITY v. ACC
    Opinion of the Court
    Ariz. 449, 452 (App. 1981)). And again, “[b]ecause ratemaking is such a
    complex and specialized endeavor,” we accord substantial deference to the
    Commission’s analysis. Miller, 227 Ariz. at 28, ¶ 27 (citing Woods, 
    171 Ariz. at 294
    ).
    A.     The Decision to Adopt a Consolidated Rate is Supported by
    Substantial Evidence and Rational Explanation.
    ¶25           SCHOA first complains the Commission acted arbitrarily and
    capriciously by: (1) failing to adequately explain why it looked beyond cost-
    causation evidence, and (2) rejecting or failing to consider the merits of
    SCHOA’s discrimination claim. We disagree.
    ¶26            As detailed above, substantial evidence supports the
    Commission’s determination that all consumers within the consolidated
    district receive similar services from EPCOR. See supra ¶¶ 22-23. Moreover,
    the Decision contains a detailed explanation of how the Commission
    considered cost-causation principles under the different scenarios, why
    avoiding rate shock was a higher priority than staying with a strict cost-
    causation rate design, and why the Commission decided not to base rates
    upon geographic or demographic features of the districts. The Commission
    also explained that it was not, and had never been, bound by the districts’
    geographical properties; indeed, two of the then-existing districts at issue
    here — Agua Fria and Mohave — were comprised of two distinct land areas
    served by separate facilities. Thus, although the scale of this consolidation
    was much larger than previous proposals, the Commission’s decision to
    consolidate was not without precedent or the result of an abrupt policy
    change.
    ¶27          SCHOA fails to prove the consolidated rate resulted from the
    Commission’s failure to adequately consider arguments or explain its
    decision. Rather, the Commission’s observations and explanations within
    the Decision reflect careful consideration and conscientious rejection of
    SCHOA’s arguments.
    B.     The Commission Gave the Evidence Due Consideration.
    ¶28          SCHOA argues the Commission acted arbitrarily and
    capriciously when it “failed or refused to meaningfully consider” public
    comments in opposition to consolidation and an Arizona State University
    (ASU) report that found Sun City residents have fewer resources and lower
    income than residents of other districts. In a separate but related argument,
    SCHOA contends that “the fact that the Commission thoroughly recited the
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    SUN CITY v. ACC
    Opinion of the Court
    parties’ and witnesses’ respective positions does not mean the Commission
    treated them as relevant or valid or weighed them.” We again disagree.
    ¶29            The record does not support SCHOA’s claim that the
    Commission ignored consumer interests. See Phelps Dodge, 207 Ariz. at 107,
    ¶¶ 30-31 (“[b]earing in mind the Commission’s duty to consider the
    interests of ‘all whose interests are involved’ in setting just and reasonable
    rates,” including consumer interests). Consumers were well-represented
    through the intervening parties. These parties, including SCHOA and
    RUCO, were given ample opportunity to, and did, advance the interests of
    various consumer groups during the course of the proceedings. And
    although the record reflects that the Commission treated public comment
    differently than sworn evidence, it acted within its discretion to do so. Cf.
    Leslie C. v. Maricopa Cty. Juv. Court, 
    193 Ariz. 134
    , 136 (App. 1997)
    (concluding the factfinder “must weigh evidence independently from the
    conclusions of witnesses” and acted within its discretion in assigning a
    greater weight to certain evidence “than did the witnesses”) (citing
    Callender v. Transpacific Hotel Corp., 
    179 Ariz. 557
    , 562 (App. 1993), and State
    Farm Fire & Cas. Co. v. Brown, 
    183 Ariz. 518
    , 525-26 (App. 1995)).
    ¶30            Finally, the record reflects the Commission considered and
    rejected the ASU report, ultimately finding “the demographic and
    economic information provided [to be] of limited utility in deciding the
    consolidation issue” because “relative community affluence does not
    present a valid basis for establishing the justness and reasonableness of
    rates.” SCHOA argues the “rationale for discounting this evidence is not
    persuasive,” but we, again, defer to the weight the Commission assigned
    the evidence. See Sierra Club, 237 Ariz. at 576, ¶ 26 (deferring to the
    Commission’s reliance on evidence even after the opponent of the rate
    claimed the decision “was based on speculative evidence that ‘defied
    credibility’”); Simms, 
    80 Ariz. at 146
     (“The commission is entitled to
    reasonably determine the probative force of [relevant evidence].”) (citing
    R.R. Comm’n of Cal. v. Pac. Gas & Elec. Co., 
    302 U.S. 388
    , 397-98 (1938)).
    ¶31           The record clearly demonstrates the Commission considered
    all the evidence, identified what it deemed relevant, and weighed the
    competing rate designs. The fact that the Commission assigned less weight
    to or rejected certain evidence does not render the Decision arbitrary. To
    the contrary, the resolution of conflicts in the evidence is an essential part
    of the Commission’s ratemaking function. See Sierra Club, 237 Ariz. at 576,
    ¶ 26. SCHOA simply invites this Court to reweigh the evidence — a task
    in which we will not engage. See Freeport, 244 Ariz. at 417, ¶ 34 (“We are
    12
    SUN CITY v. ACC
    Opinion of the Court
    not empowered to substitute our judgment of what we may find to be an
    optimal rate structure for the Commission’s.”).
    C.     The Commission Properly Considered Projected Future
    Expenses.
    ¶32            SCHOA argues the Commission acted arbitrarily and
    capriciously when it considered the Sun City district’s projected future
    expenses as part of its consolidation analysis. Without citation to authority,
    SCHOA argues “[a]nticipating costs five to ten years into the future is
    illegitimate in a rate making process that creates a revenue requirement
    based on historic costs in an expired test year, augmentable only under strict
    criteria that do not include distant eventualities.”
    ¶33           In the limited context of a fair-value determination, our
    supreme court has held that “the Commission in its discretion can consider
    matters subsequent to the historic year, bearing in mind that all parties are
    entitled to a reasonable opportunity to rebut evidence presented.” Ariz.
    Corp. Comm’n v. Ariz. Pub. Serv. Co., 
    113 Ariz. 368
    , 371 (1976). Although
    Arizona Public Service only addressed the inclusion of “projects contracted
    for and commenced during the historical year” in the fair-value
    determination, see 
    id.,
     the principle can apply more broadly to the
    Commission’s policy decision to assign greater weight to principles such as
    gradualism or avoiding rate shock. See Freeport, 244 Ariz. at 414-15, ¶ 20
    (concluding that “rate shock is a well-founded concern . . . when
    establishing a revenue allocation scheme that is just and reasonable”). The
    projected future expenses were relevant to the Commission’s stated policy
    decision to gradually increase rates and avoid rate shock through
    consolidation here, and the Commission did not err in considering the
    future cost of service for this purpose. Moreover, all parties had ample
    opportunity to rebut the evidence at the evidentiary hearing, and several
    attempted to do so. On this record, SCHOA has shown no error.
    CONCLUSION
    ¶34           The Decision is affirmed.
    13
    SUN CITY v. ACC
    Brown, J., Dissenting
    B R O W N, Judge, dissenting:
    ¶35            The majority errs by giving virtually absolute deference to the
    Commission’s groundbreaking decision to approve EPCOR’s application to
    consolidate five dissimilar sewer districts and adopt the same rate for each
    district. Even though our Constitution and statutes prohibit the imposition
    of discriminatory charges or rates, the Commission never determined
    whether this new consolidated rate design discriminates among groups of
    customers who are quite dissimilar, other than they now share a common
    owner. Not only did the Commission fail to resolve the discrimination
    issue, plainly raised by SCHOA, it washed its hands of any responsibility
    to address it.
    ¶36            Despite this gaping hole in the Commission’s ruling, the
    majority pushes the highly deferential treatment afforded the Commission
    for more than a century even further by concluding that EPCOR’s new rates
    run afoul of neither Article 15, § 12 of the Constitution (“anti-discrimination
    clause”) or § 40-334(A). The majority summarily holds that rates are not
    discriminatory under our statutes and Constitution whenever the
    Commission resolves conflicting evidence to conclude that customers
    receive “like and contemporaneous service.” Yet the Commission itself
    offered no explanation why a uniform rate does not impose a
    discriminatory charge on residents when the cost to serve those residents
    differs drastically. Nor did the Commission even attempt to explain how
    the uniform rate does not subject Sun City customers to prejudice or
    disadvantage under § 40-334(A). The majority concludes nonetheless that
    the decision to force SCHOA to subsidize four other sewer districts through
    consolidation was not arbitrary and is supported by substantial evidence.
    ¶37           I cannot agree with these broad conclusions, particularly
    considering the Commission’s complete failure to address whether
    consolidation violates the anti-discrimination clause or § 40-334(A). Given
    the importance of the Commission’s role in our state government,
    Arizonans deserve a thorough constitutional and statutory analysis of this
    newly minted policy. I would therefore remand the matter to the
    Commission with an instruction to squarely address the discrimination
    issues raised by SCHOA. See A.R.S. § 40–254.01(A) (granting this court the
    power to remand an order of the Commission “upon a clear and satisfactory
    showing that the order is unlawful or unreasonable”).
    A.     Standard of Review: What is the Court’s Role?
    ¶38         I must first address the fundamental problem underlying
    much of the majority’s analysis—excessive deference. For decades, both
    14
    SUN CITY v. ACC
    Brown, J., Dissenting
    this court and our supreme court have repeated broad pronouncements
    suggesting that Commission decisions, especially in rate cases, are
    essentially untouchable. Those statements stem from the perception that
    the judiciary has an extremely narrow role in these types of cases. That
    perception is not necessarily wrong, especially when the Commission
    resolves highly technical matters within its expertise. I believe our supreme
    court should clarify, however, our proper function in reviewing complex
    legal issues like discrimination so that the judicial branch may continue to
    ensure that the Commission follows its constitutional and statutory
    obligations. Otherwise, one may fairly question why we are even asked to
    review these types of cases, with all their complexities, when the outcome
    is essentially predetermined.
    ¶39           The majority correctly notes that we are not free to disregard
    controlling authority of our supreme court. As explained below, however,
    some of the authority commonly cited for the extraordinary deference given
    to the Commission has its origins in dicta, and flawed dicta at that. See
    Town of Chino Valley v. City of Prescott, 
    131 Ariz. 78
    , 81 (1981) (“Dictum thrice
    repeated is still dictum. It is a court’s statement on a question not
    necessarily involved in the case and, hence, is without force of
    adjudication. . . . It is not controlling as precedent.”).
    ¶40            The majority’s extreme deference to the Commission, notably
    urged by EPCOR and the intervening districts, is but the latest in a
    problematic trend originating with oft-repeated dicta in Tucson Gas: “While
    it is not so named,” the Commission is “in fact, another department of
    government,” and “[i]ts exclusive field may not be invaded by either the
    courts, the legislative, or executive.” 15 Ariz. at 306. In that case, the
    legislature had passed a law prohibiting utilities from charging for more
    than the actual amount of resources furnished to the consumer. Id. at 296.
    Notwithstanding this law, a utility attempted to collect a minimum rate
    from its customers. Id. The question before the court was whether the
    legislative act was unconstitutional. Id. The two-justice majority held that
    the legislature had attempted to “fix rates,” a power that lay solely with the
    Commission, and thus the statute could not stand. Id. at 301, 307–08.
    ¶41             Tucson Gas takes a dim view of the judiciary’s role in
    reviewing Commission decisions. To reach its holding, the supreme court
    noted “[t]he unwisdom and impracticability of imposing upon the courts,
    in the first instance, this kind of litigation.” Id. at 305. This led the court to
    conclude that Arizona’s founders “knew the evil, and sought to correct it in
    the fundamental law of the state by constituting the Corporation
    Commission a body empowered . . . to exercise not only legislative but the
    15
    SUN CITY v. ACC
    Brown, J., Dissenting
    judicial, administrative, and executive functions of the government. . . . Its
    exclusive field may not be invaded by either the courts, the legislative, or the
    executive.” Id. at 306 (emphasis added). This or similar language has been
    recycled often in framing the standard for reviewing the Commission’s
    decisions. See, e.g., RUCO, 240 Ariz. at 111, ¶ 12; Ariz. Corp. Comm’n v. State
    ex rel. Woods, 
    171 Ariz. 286
    , 292 (1992); Consol. Water Utils., Ltd. v. Ariz. Corp.
    Comm’n, 
    178 Ariz. 478
    , 483 (App. 1993); Sw. Gas Corp. v. Ariz. Corp. Comm’n,
    
    169 Ariz. 279
    , 283 (App. 1991); supra ¶ 13. Applied literally, it leaves no role
    for the courts to fill.
    ¶42             I cannot say whether the two justices in the Tucson Gas
    majority (only one of whom was a delegate to our state’s constitutional
    convention) had the better claim to original intent than did the dissenting
    justice (also a delegate), but I would not quarrel with the notion of absolute
    deference to the Commission that Tucson Gas embraces if it were actually
    mandated by the text of our Constitution. But that is not the case.
    ¶43             Contrary to popular belief, the Commission is not, “in fact,
    another department of government.” See Tucson Gas, 15 Ariz. at 306. As
    Article 3 of the Constitution plainly states, “[t]he powers of the government
    . . . shall be divided into three separate departments.” Ariz. Const. art. 3
    (emphasis added). Article 3 further states that unless the Constitution itself
    provides otherwise, no department may “exercise the powers properly
    belonging to either of the others.” Id. So while the Constitution expressly
    gives the Commission the authority and responsibility to exercise various
    aspects of each of the three governmental powers, the Commission is still
    not an independent and coequal branch of government on equal footing
    with the legislative, executive, or judicial branches.
    ¶44             The Constitution’s silence on this issue is a sufficient basis to
    conclude that the Commission is neither a fourth branch of government nor
    exempt from judicial review. But that silence is even more prominent given
    the conditions in which Arizona’s government was founded. The framers
    of our Constitution, distrustful of concentrations of governmental power,
    explicitly dispersed that power among different institutions in our state’s
    new government. John D. Leshy, The Making of the Arizona Constitution, 
    20 Ariz. St. L.J. 1
    , 70 (1988). They believed “that process and structure are key
    controls on the tendency to abuse power.” 
    Id.
     And despite their cardinal
    “concern with direct democracy,” the framers “had no real reason to regard
    judicial review as antidemocratic” because of independent democratic
    safeguards on the judiciary. Id. at 75 (discussing, for example, the ease of
    amending the Constitution). Neither the legislature nor the executive
    branch is immune from judicial review, even though each is a coequal
    16
    SUN CITY v. ACC
    Brown, J., Dissenting
    branch with the judiciary. It is, after all, the function of the judiciary is to
    review the constitutionality of “the acts of other departments”—a
    proposition widely accepted at the time of statehood. Id. at 74. That being
    the case, why the courts have come to concede virtual autonomy to the
    Commission is a mystery.
    ¶45           Given the language of Article 3, had the framers wanted the
    Commission to be treated as a fourth branch of government virtually
    immune from judicial review (unlike the other branches), they would
    certainly have expressed such an extraordinary proposition in the text. But
    for some reason our courts have failed to consistently recognize that
    principle. Over 35 years ago, responding to the Commission’s argument
    suggesting its decision was not subject to judicial review, this court
    explained that the Commission is not exempt from the “general principle
    that agency proceedings leading to rate decisions are . . . subject to judicial
    scrutiny and review relating to compliance with statutory requirements
    and constitutional due process standards.” State ex rel. Corbin v. Ariz. Corp.
    Comm’n, 
    143 Ariz. 219
    , 224 (App. 1984). Though we acknowledged the
    Commission’s “constitutional genesis,” we found “no validity” in its
    assertion that the judiciary had no role to play. See 
    id.
     at 224–25. Despite
    that finding, Arizona’s appellate decisions continue to cite Tucson Gas’s
    broad dicta implying that judicial review of Commission decisions means
    we will affirm if there is any basis whatsoever for doing so.
    ¶46            As relevant here, the Commission’s power is “to prescribe
    classifications, rates, charges, rules, regulations, or orders.” Tucson Gas, 15
    Ariz. at 307. Thus, in the realm of ratemaking, what Tucson Gas stands for
    is that neither the legislature nor the courts can set rates or charges. But it
    must still be the province and the duty of the courts to determine (once a
    rate is prescribed) whether it is just, reasonable, and not discriminatory.
    ¶47            Ultimately, there is ample room in the scheme of separation
    of powers for both the Commission and the courts to carry out our
    respective roles. It is the Commission, not the courts, that has the expertise
    required to develop the complex set of facts necessary to perform its
    constitutional function and, ultimately, to articulate how those facts
    support its ultimate decision. See Marco Crane & Rigging v. Ariz. Corp.
    Comm’n, 
    155 Ariz. 292
    , 294 (App. 1987); Campbell v. Mountain States Tel. &
    Tel. Co., 
    120 Ariz. 426
    , 431–32 (App. 1978). Indeed, it would be the height
    of judicial pride to conclude otherwise because, unlike the Commission, we
    have neither political constituencies nor any special expertise in, what our
    framers themselves called, “the most complicated subject in the economic
    world.” The Records of the Arizona Constitutional Convention of 1910, 979 (John
    17
    SUN CITY v. ACC
    Brown, J., Dissenting
    S. Goff ed., 1991); see also Marsh v. Or. Nat. Res. Council, 
    490 U.S. 360
    , 377
    (1989) (noting deference should be at its height when a high level of
    technical experience is required to resolve the issue); Chevron, U.S.A., Inc. v.
    Nat. Res. Def. Council, Inc., 
    467 U.S. 837
    , 865 (1984) (“Judges are not experts
    in the field, and are not part of the political branches of Government.”).
    ¶48            But judicial review is meaningless if reviewing courts merely
    “rubberstamp” Commission decisions without ensuring the Commission
    complied with, or at least demonstrated its awareness of, its constitutional
    and statutory obligations. See NLRB v. Brown, 
    380 U.S. 278
    , 291–92 (1965);
    see also Pub. Citizen Health Research Grp. v. Tyson, 
    796 F.2d 1479
    , 1505 (D.C.
    Cir. 1986) (explaining that a reviewing court owes no deference “when the
    agency simply has not exercised its expertise”); cf. Gaveck v. Ariz. State Bd.
    of Podiatry Exam’rs, 
    222 Ariz. 433
    , 438, ¶ 18 (App. 2009) (“Without clearly
    articulated standards as a backdrop against which the court can review
    discipline, the judicial function is reduced to serving as a rubber-stamp for
    the Board’s action.” (citation omitted)). Although we do not “decide
    matters entrusted to other branches,” we remain obliged to “determine
    respective constitutional boundaries.” State v. Maestas, 
    244 Ariz. 9
    , 15, ¶ 28
    (2018) (Bolick, J., concurring); see Forty-Seventh Legislature of State v.
    Napolitano, 
    213 Ariz. 482
    , 485, ¶ 8 (2006) (“[D]etermin[ing] whether a branch
    of state government has exceeded the powers granted by the Arizona
    Constitution . . . traditionally falls to the courts to resolve.”). That the
    Commission is a powerful and centralized government agency with
    authority over necessities of life like water, wastewater, and electricity only
    makes it more imperative that we carry out this duty when reviewing
    Commission decisions. See Gutierrez-Brizuela v. Lynch, 
    834 F.3d 1142
    , 1155
    (10th Cir. 2016) (Gorsuch, J., concurring).
    ¶49            The proper exercise of our judicial function respects the
    Commission’s expertise by ensuring the Commission has, in fact, exercised
    that expertise. Our review must remain probing enough to require that the
    Commission clearly articulates logical reasons for its decisions. See Motor
    Vehicle Mfrs. Ass’n v. State Farm Mut. Auto. Ins. Co., 
    463 U.S. 29
    , 42–43 (1983);
    In re Permian Basin Area Rate Cases, 
    390 U.S. 747
    , 792 (1968) (explaining that
    the court’s responsibility was to assure itself that the Federal Power
    Commission gave “reasoned consideration to each of the pertinent factors.
    Judicial review of the Commission’s orders will therefore function . . . only
    if the Commission indicates fully and carefully the methods by which, and
    the purposes for which, it has chosen to act . . . .”). When we do so it ensures
    that the Commission remains accountable to the voting public whose votes,
    in Arizona at least, ultimately decide the course the Commission will take.
    See Ariz. Const. art. 15, § 1; see also Eduardo Jordão & Susan Rose-
    18
    SUN CITY v. ACC
    Brown, J., Dissenting
    Ackerman, Judicial Review of Executive Policymaking in Advanced Democracies:
    Beyond Rights Review, 
    66 Admin. L. Rev. 1
    , 46 (2014). It is critical, therefore,
    that the Commission explain the reasons for its decisions so that the
    voters—who share the benefits or burdens of those decisions—can make
    informed decisions at the ballot box. If our review fails to ensure that the
    Commission provide an adequate answer to fairly presented arguments of
    constitutional magnitude, then we undermine the people’s ability to carry
    out their critical function within our constitutional framework. See Ariz.
    Corp. Comm’n v. State ex rel. Woods, 
    171 Ariz. 286
    , 297 n.9 (1992) (“Under
    Arizona’s system . . . the remedy for regulatory abuse is election.”).
    ¶50           Resolving claims of discriminatory ratemaking under the
    anti-discrimination clause and § 40-334 is, in no small way, the proper way
    for the courts and the Commission to carry out our respective roles.
    Whether discrimination has occurred is ultimately a legal question, but
    answering that question undoubtedly depends heavily on the complex set
    of facts underlying ratemaking. In this context, it is the Commission, not
    this court, that is expert at developing those facts, articulating a rational
    connection between those facts and its chosen policy, and ultimately, as
    relevant here, offering a reasoned justification as to why its decision does
    not violate the prohibitions of our Constitution and statutes. Only when
    the Commission has brought its expertise to bear on the issue can we
    properly carry out our duty to review whether consolidation violates the
    anti-discrimination clause or § 403-34. That is the only way we can ascertain
    whether the Commission has exceeded constitutional and statutory
    boundaries by imposing a discriminatory charge. And it is no answer to
    say that the Commission’s lack of analysis is irrelevant because our review
    is de novo anyway. We are not empowered to make decisions in the first
    instance. De novo review is just that, review.
    ¶51           This case presents an ideal opportunity, then, for our supreme
    court to clarify that Commission decisions are not untouchable by the
    judiciary. They are subject to judicial review as contemplated by the
    Constitution and statutes that outline the process aggrieved parties may
    follow in challenging a Commission order. And if the standards for
    evaluating a discrimination claim under Article 15, § 12, or § 40-334 are
    different than they are in other areas of the law, I urge the supreme court to
    announce and explain such standards.
    ¶52            In sum, we should not be so willing to defer to the
    Commission that we create answers to arguments it never addressed in the
    first instance, simply because it wears different constitutional hats. The
    word “discrimination” or “discriminatory” does not even appear in the
    19
    SUN CITY v. ACC
    Brown, J., Dissenting
    Commission’s findings of fact and conclusions of law; nor is there any
    reference to the relevant statute or constitutional provision. Not only do
    we have the authority to remand under these circumstances, it is our
    obligation to do so. When the Commission fails to meaningfully address a
    constitutional challenge to its proposed plan of action, and thereby ignores
    its duty to exercise its limited judicial power, traditional separation of
    powers principles require remanding so the Commission may address the
    constitutional challenge.
    B.     Rate Discrimination
    ¶53           Putting aside my disagreement with the deferential posture
    applied by the majority, under even that extremely generous standard of
    review, I would remand this case based on the Commission’s failure to
    address SCHOA’s claim that the consolidated rate structure violates the
    constitutional and statutory prohibitions against discrimination.
    ¶54            The Commission’s failure to consider the prospect of
    discrimination may be due to the originality of SCHOA’s claim. The
    Commission and the majority seem to understand SCHOA to argue that a
    consolidated rate discriminates against them because they receive different
    “services” within the meaning of the anti-discrimination clause and
    § 40-334. Supra ¶¶ 19–23. I read it differently. It seems clear to me that
    SCHOA has been saying all along that a uniform charge for wastewater is
    unconstitutionally discriminatory because it costs so much less for EPCOR
    to provide SCHOA’s residents with the “like and contemporaneous
    service” it provides the other districts—wastewater treatment.7
    ¶55          SCHOA therefore argues that not only did the Commission
    fail to adequately explain why it rejected SCHOA’s evidence and
    arguments about discrimination, but it appears the Commission failed to
    even consider the possibility that a uniform rate was discriminatory. And,
    as SCHOA emphasizes, the Commission’s decision represents an abrupt
    and substantial departure from its own precedent. Unlike the majority, I
    believe SCHOA has clearly and convincingly demonstrated that the
    Commission’s decision is “arbitrary, unlawful or unsupported by
    7       For example, the opening brief states that “[r]ate discrimination thus
    arises when (1) a utility imposes a single, uniform rate on consumers in
    separate communities notwithstanding vast differences in the utility’s cost
    to serve those communities,” and (2) “[w]hen a firm sells the same service
    at rates which are not proportional to costs, discrimination results.”
    20
    SUN CITY v. ACC
    Brown, J., Dissenting
    substantial evidence.” Litchfield Park Serv. Co. v. Ariz. Corp. Comm’n, 
    178 Ariz. 431
    , 434 (App. 1994).
    ¶56            A Commission decision is supported by substantial evidence
    when it contains “evidence which would permit a reasonable person to
    reach the Commission’s result.” Sierra Club, 
    237 Ariz. 568
    , 575, ¶ 22; see also
    Universal Camera Corp. v. NLRB, 
    340 U.S. 474
    , 481 (1951) (noting a reviewing
    court cannot just “read only one side of the case and, if they find any
    evidence there, [conclude] the administrative action is to be sustained and
    the record to the contrary is to be ignored”). Even if substantial evidence
    supports the Commission’s choice, it “may in another regard be ‘arbitrary,
    capricious, an abuse of discretion, or otherwise not in accordance with
    law’—for example, because it is an abrupt and unexplained departure from
    agency precedent.” Ass’n of Data Processing Serv. Orgs., Inc. v. Bd. of
    Governors of Fed. Reserve Sys., 
    745 F.2d 677
    , 683 (D.C. Cir. 1984). Decisions
    should also be set aside as arbitrary when they “fail[] to consider an
    important aspect of the problem” or to “articulate a satisfactory explanation
    for its action including a ‘rational connection between the facts found and
    the choices made.’” State Farm, 
    463 U.S. at 43
     (citation omitted).
    ¶57             This standard, undoubtedly, does not demand “further
    justification . . . by the mere fact of policy change” from the Commission,
    but it does demand “a reasoned explanation . . . for disregarding facts and
    circumstances that underlay or were engendered by the prior policy.” FCC
    v. Fox Television Studios, 
    556 U.S. 502
    , 515–16 (2009) (emphasis added).
    Importantly, we may not supply that explanation when the Commission
    has not. See Encino Motorcars, LLC v. Navarro, 
    136 S. Ct. 2117
    , 2127 (2016).
    Among other things, our attempt to do so would itself violate the separation
    of powers. See Ariz. Const. art. 3; Chenery Corp., 332 U.S. at 196. As the
    United States Supreme Court explained long ago:
    If the administrative action is to be tested by the basis upon
    which it purports to rest, that basis must be set forth with such
    clarity as to be understandable. It will not do for a court to be
    compelled to guess at the theory underlying the agency’s
    action; nor can a court be expected to chisel that which must
    be precise from what the agency has left vague and indecisive.
    In other words, “We must know what a decision means before
    the duty becomes ours to say whether it is right or wrong.”
    Chenery Corp., 332 U.S. at 196–97 (citation omitted). As noted, the
    Commission has an essential constitutional role to play. And when we
    resolve issues the Commission should have addressed in the first instance,
    21
    SUN CITY v. ACC
    Brown, J., Dissenting
    we intrude on its constitutionally assigned ratemaking role. Ariz. Const.
    art. 15, § 3.
    ¶58           I emphasize these points not because the majority disagrees
    with them, but because reasonable application of these principles compels
    the conclusion that when the Commission decided to abandon long-
    favored cost-causation principles in favor of consolidation—and became
    aware that such consolidation could trigger discrimination in violation of
    both our statutes and Constitution—it was required to provide reasons for
    the change that are legally defensible and supported by evidence. See
    Freeport Minerals Corp. v. Ariz. Corp. Comm’n, 
    244 Ariz. 409
    , 414–17,
    ¶¶ 20–33 (App. 2018) (recognizing that (1) avoiding “rate shock” may
    permit the Commission to “deviate from strict cost of service” but that
    “does not mean that the instant rate allocation necessarily passes
    constitutional muster;” and (2) evaluating the record to determine if this
    was “sufficient justification”).
    ¶59          Despite various warning signs that a consolidated rate might
    be discriminatory, the Commission never made any finding or offered any
    explanation that consolidating the five districts in a way that will compel
    SCHOA to subsidize the other four districts is not unconstitutional
    discrimination or does not violate A.R.S. § 40-334(A). The Commission
    glossed over facts that seem to fall within the prohibitions of both our
    Constitution and statutes, for example, citing “the fact that only Sun City
    customers would provide any subsidies” to other EPCOR districts as a great
    boon in favor of consolidation, seemingly suggesting that SCHOA’s
    customers should feel elated that they are the only ones who will have to
    pay a portion of the sewer bills for customers in the other districts.8
    ¶60          Perhaps the most troubling aspect of this case, though, is that
    the Commission seemed to go out of its way to make clear it did not intend
    to provide an explanation as to why a consolidated rate was not
    discriminatory. In addressing the arguments concerning cost-causation,
    the Commission relied heavily on the EPA/NARUC study. That study
    employed the Bonbright Eight-Criteria standard, which includes
    8      Notably, the Sun City district has substantially more customers than
    any of the other four districts: Agua Fria serves 6,829 customers; Anthem
    serves 9,025 customers; Mohave serves 1,511 customers; Sun City West
    serves 17,450 customers; and Sun City serves 31,570 customers. And
    unique among the five districts is that Sun City’s wastewater is treated at
    the City of Tolleson Wastewater Treatment Plant, which EPCOR neither
    owns, operates, nor controls.
    22
    SUN CITY v. ACC
    Brown, J., Dissenting
    “[a]voidance of ‘undue discrimination’ in rate relationships.” Although
    this study concluded that a single-tariff approach was “generally
    consistent” with some of the Bonbright factors, the Commission expressly
    declined to reach any conclusion about whether a single-tariff approach
    was discriminatory and simply stated that “regulators have more room for
    discretion as to fairness, discrimination, and efficiency.”
    ¶61           In Arizona, however, our Constitution states there shall be
    “no discrimination”; it does not give regulators permission to discriminate
    so long as they do not abuse their discretion. Ariz. Const. art. 15, § 12. As
    a constitutional and statutory directive, the question of discrimination was
    surely “an important aspect of the problem” the Commission was required
    to resolve. See State Farm, 
    463 U.S. at 4
    ; see Earth Island Inst. v. Hogarth, 
    494 F.3d 757
    , 760–61 (9th Cir. 2007) (recognizing that an agency action that fails
    to comply with “Congressional mandates” is arbitrary). Given the
    Commission’s finding that Sun City alone would subsidize the other
    EPCOR districts, which on its face implicates some type of discrimination,
    the need to resolve whether that discrimination violates Arizona law seems
    especially pressing. Although the onus was on the Commission to explain
    why such subsidization was not unlawful, it plainly chose to ignore the
    issue. That alone renders the Decision arbitrary.
    ¶62           Charitably construed, the Decision could be read to say that
    the consolidated rate is discrimination but that it is justified on the grounds
    that “simply comparing utility rates in neighboring areas . . . is not by itself
    typically a valid basis for assessing whether rates for a company are just
    and reasonable because a host of factors can influence rate disparity
    between and among individual companies and municipal utilities.” If that
    were true, then no one could doubt that, given the mandates of our
    Constitution and statutes, we would be required to apply some tier of
    scrutiny to the Decision. The point, however, is that we should not have to
    guess. The Commission should have at least explained what those “factors”
    were, why they applied in this case to make the newly consolidated rate
    structure legally permissible, and what legal standard it used to reach its
    conclusion.9 Only then can we fulfill our proper role to ensure that the
    Commission has not contravened constitutional or statutory boundaries.
    9     SCHOA argues that as a right guaranteed by the Arizona
    Constitution, rate discrimination should receive strict scrutiny review. Yet
    the Decision does not address this contention, nor the applicable standard
    of review. The Commission should have, at the least, stated how it
    23
    SUN CITY v. ACC
    Brown, J., Dissenting
    ¶63            Although the Commission may have indicated that it
    considered cost evidence, it never explained how abandoning costs did not
    create discrimination. The five reasons the Commission offered on pages
    201–206 of the Decision do nothing to change this conclusion. Of these, only
    the first and last reasons cited by the majority, supra ¶ 26, implicate in any
    way the discrimination question, but they still offer no rational connection
    between the facts found and the choices made. For example, the
    Commission explained it was abandoning “traditional cost-causation
    ratemaking, as applied to date” but that did not matter because it will
    follow cost-causation principles after consolidation, viewing the districts as
    one whole. This “model of circular reasoning, in which the premises of the
    argument feed on the conclusion,” does nothing to explain why the
    consolidation itself—which compels Sun City residents to subsidize other
    EPCOR customers—does not create illegal discrimination, and as such
    cannot pass muster. See Wesberry v. Sanders, 
    376 U.S. 1
    , 25 (1964) (Harlan,
    J., dissenting); Elec. Consumers Res. Council v. FERC, 
    747 F.2d 1511
    , 1515–16
    (D.C. Cir. 1984) (reasoning that a FERC decision was deficient for an
    “absence of evidence and explanation” when the “proposed rate design
    result[ed] in a cross-subsidization” and FERC offered only circular
    reasoning to deny the existence of rate discrimination); see also Maher
    Terminals, LLC v. Fed. Mar. Comm’n, 
    816 F.3d 888
    , 890–91 (D.C. Cir. 2016)
    (reasoning that the commission’s order approving a disparity in rental rates
    offered an inadequate explanation because, among other things, it relied on
    circular reasoning).
    ¶64          A concerning theme of the Decision is the Commission’s
    apparent acceptance of Verrado’s claim that stand-alone rates would be
    unconstitutional because “price discrimination” would continue to exist
    addressed SCHOA’s constitutional arguments—what is being compared
    and analyzed. The majority seems to conclude that no constitutional injury
    sufficient to trigger any form of scrutiny occurred merely because the
    Commission said so. I know of no area of constitutional law where we
    determine whether an injury has occurred by simply deferring to the
    decision of the body we are reviewing, especially when that decision is
    silent on the matter. At any rate, the majority’s premise is inaccurate—even
    if we find no “substantial burden” of a fundamental right, then the law or
    decision at issue remains subject to review, albeit under a lower level of
    scrutiny.
    24
    SUN CITY v. ACC
    Brown, J., Dissenting
    amongst the five districts.10 To the extent discrimination was occurring
    before consolidation, it was not created by SCHOA. Before EPCOR
    acquired SCHOA, it could not be said that SCHOA’s lower costs created
    any discrimination between it and the other districts involved in this case.
    According to the Commission’s logic, however, the day after EPCOR
    acquired SCHOA an immediate discrimination problem arose because the
    other districts’ less efficient systems caused their customers to have to pay
    higher rates.11 The majority also appears to embrace this logic, which
    essentially means that going forward a single tariff must be used for all
    multi-district public service corporations because to find otherwise would
    be discriminatory. This approach ignores the obvious fact that until EPCOR
    decided it would be profitable to acquire the wastewater rights of these
    districts, nothing about their differing rate structures was discriminatory.
    The only thing that changed was ownership of the districts. I cannot believe
    the framers of our Constitution contemplated that the anti-discrimination
    clause could be used as a sword here to compel consolidation under the
    guise of eliminating discrimination. Similarly, I see nothing in § 40-334
    suggesting that the legislature intended to require that outcome.
    ¶65          Consolidation is not like typical ratemaking. The obvious
    potential for discrimination exists when dissimilar districts are
    consolidated. It is therefore plain that the Commission must consider any
    discriminatory impact before consolidation. Such caution is warranted here,
    because this decision will undoubtedly set precedent for future
    consolidation cases. And if today’s holding is any barometer, such
    consolidation will occur without regard to where the districts are located,
    what their customers have paid in the past, what sacrifices they may have
    made to build and maintain a different (and arguably more efficient)
    system, or whether better management has allowed them to keep their
    unique, and perhaps less costly, systems. Moreover, forced consolidation
    10     The Commission, apparently making this implicit finding without
    any constitutional or statutory analysis, somehow believed it was
    appropriate to reach that determination and yet failed to address the
    alleged discrimination asserted by SCHOA.
    11     Other entities that own multiple water or wastewater treatment
    systems in Arizona with different customer rates for each system will likely
    be surprised to discover that, according to the Commission’s implicit
    reasoning in this case, they are now violating the anti-discrimination
    provisions at issue here. Of course, if the entities are in favor of
    consolidation, then this case will presumably make it easier for them to win
    Commission approval to do so.
    25
    SUN CITY v. ACC
    Brown, J., Dissenting
    may occur even though the majority of customers in a particular district
    might like to avoid dealing with a larger administrative bureaucracy.
    ¶66            The Commission states—and the majority appears to
    accept—that it “generally believes that consolidating smaller utilities into
    larger utilities is beneficial to the smaller utilities and their customers, and
    that principle should apply equally in the context of consolidating distinct
    geographically defined utility districts into a unified district.” If
    consolidation is discriminatory, however, that would present an obstacle to
    the Commission’s new policy. The Commission’s vague “belief” of what is
    good for consumers generally, as a matter of policy, is no answer to the
    question of whether rates discriminate against a group of ratepayers
    specifically.
    ¶67           Likewise, the evidence relied on in ¶ 22 of the majority
    opinion does not address SCHOA’s claim that, again, is grounded in the
    assumption that the districts receive like and contemporaneous services.
    The Commission’s finding that “[t]here is not an appreciable difference in
    the wastewater service received by customers located in different EPCOR
    wastewater districts” completely misses the mark. (Emphasis added.) It
    has no bearing on SCHOA’s claim of discriminatory charges. The only cited
    evidence that addresses whether consolidation would impose a
    discriminatory charge on Sun City customers is the testimony of Shawn
    Bradford, EPCOR’s vice president of corporate services, who generally
    opined that costs would be fairly consistent throughout the five districts.
    But Bradford could not say whether this was true of Sun City because
    EPCOR has no control over costs at the Tolleson plant, where Sun City’s
    wastewater is treated. Thus, his statement that he “would think that the
    operating costs to treat the effluent . . . is roughly the same” rested, by his
    own admission, on sheer speculation. I do not agree that purely speculative
    testimony of one witness is “evidence which would permit a reasonable
    person to reach the Commission’s result.” See Sierra Club—Grand Canyon
    Chapter, 237 Ariz. at 575, ¶ 22; City of Tucson v. Citizens Utils. Water Co., 
    17 Ariz. App. 477
    , 481 (1972) (“Mere speculation and arbitrary conclusions are
    not substantial evidence and cannot be determinative.”).
    ¶68           The failure of the Commission to provide a reasoned
    resolution of SCHOA’s discrimination claim, and the majority’s labored
    effort to uphold its decision despite that absence, is perhaps the best
    evidence of why we should not opine on such issues without the benefit of
    a reasoned explanation by the Commission—here, the majority’s holding
    saps the anti-discrimination clause, as well as § 40-334, of virtually all
    meaning. In short, we should not have to guess as to such explanation.
    26
    SUN CITY v. ACC
    Brown, J., Dissenting
    ¶69          Existing caselaw in this area is quite sparse, with almost no
    cases construing the two anti-discrimination provisions. In Town of
    Wickenburg v. Sabin, 
    68 Ariz. 75
    , 77 (1948), however, our supreme court
    stated that “the law on discrimination as applied to public service
    corporations generally is well settled.” The court explained how a public
    service corporation can avoid acting in a discriminatory manner:
    The charges must be equal to all for the same service under
    like circumstances. A public service corporation is impressed
    with the obligation of furnishing its service to each patron at
    the same price it makes to every other patron for the same or
    substantially the same or similar service. . . . The common law
    upon the subject is founded on public policy which requires
    one engaged in a public calling to charge a reasonable and
    uniform price to all persons for the same service rendered
    under the same circumstances.
    
    Id.
     at 77–78 (quoting 4 Eugene McQuillin, Municipal Corporations § 1829
    (2d ed. 1943)). Relying on Wickenburg, this court has further described the
    non-discrimination doctrine as the “obligation of a public service
    corporation to provide impartial services and rates to all its customers
    similarly situated.” Miller v. Salt River Valley Water Users’ Ass’n, 
    11 Ariz. App. 256
    , 260 (1970). Neither Wickenburg nor Miller, however, relied on the
    Arizona Constitution or § 40-334 because neither involved a public service
    corporation and thus provide little guidance on construing these anti-
    discrimination provisions. See Miller, 11 Ariz. App. at 260 (noting the
    provision while passing over the defendant’s argument).
    ¶70            As stated above, supra ¶ 54, SCHOA raises an atypical
    discrimination claim. It argues the charge imposed creates disparate rates
    of return among the five districts and that, of these, Sun City alone is
    prejudiced. Despite the majority’s skepticism of such a claim, other courts
    in similar contexts agree that such a rate structure is discriminatory. E.g.,
    Cities of Riverside & Colton v. FERC, 
    765 F.2d 1434
    , 1439 (9th Cir. 1985); Ala.
    Elec. Co-op., Inc. v. FERC, 
    684 F.2d 20
    , 28 (D.C. Cir. 1982); Glacier State Tele.
    Co. v. Alaska Pub. Utils. Comm’n, 
    724 P.2d 1187
    , 1191 (Alaska 1986). And
    SCHOA’s claim tracks the plain language of both anti-discrimination
    provisions. See Ariz. Const. art. 15, § 12 (forbidding public service
    corporations from imposing discriminatory charges as between “persons or
    places” to which it provides “a like and contemporaneous service”);
    § 40-334 (providing that a public service corporation may not “make or
    grant any preference or advantage to any person or subject any person to
    27
    SUN CITY v. ACC
    Brown, J., Dissenting
    any prejudice or disadvantage” relating to the corporation’s “rates, charges,
    services, facilities or in any other respect”).
    ¶71            Today, however, absent intervention by our supreme court,
    the majority permanently shuts the door on any similar constitutional
    argument whenever the Commission concludes that a utility’s customers
    receive “like and contemporaneous service,” even though there is
    substantial evidence to the contrary. This is so because, according to the
    majority, “where customers receive ‘like and contemporaneous service,’
    rate parity is not only encouraged, but constitutionally required.” Supra
    ¶ 19. Again, SCHOA is not contending that the difference in the costs to
    treat its wastewater means it receives a different “service” within the
    meaning of the anti-discrimination clause; rather, it asserts that EPCOR
    imposes a discriminatory charge for rendering that service. Moreover, the
    majority’s apparent conclusions—that this court can find a violation of the
    anti-discrimination clause only when customers do not receive similar
    service and that we must defer to the Commission’s evaluation of such
    service—are at odds with the text and purpose of our Constitution.
    ¶72            The anti-discrimination clause prevents utilities from
    “discriminat[ing] in charges . . . between persons or places for rendering a
    like and contemporaneous service.” Ariz. Const. art. 15, § 12. Our
    obligation is to consider “the plain meaning of the words as enacted.” Ariz.
    Dep’t of Revenue v. Dougherty, 
    200 Ariz. 515
    , 518, ¶ 9 (2001). As relevant here,
    the clause plainly covers a scenario where a utility makes a demand, Charge
    Black’s Law Dictionary (4th ed. 1954), on one group of customers, in
    connection with treating their wastewater, see Service Black’s Law
    Dictionary (4th ed. 1954) (“[t]he furnishing of water, heat, light and power,
    etc.”), that is unfair when compared to the demands it places on other
    customers, Discrimination Black’s Law Dictionary (4th ed. 1954). It is
    difficult to imagine what could make a charge discriminatory in violation
    of this section, if EPCOR’s plan to force its Sun City customers to subsidize
    the other districts does not meet that description. Indeed, taken to its
    endpoint, the majority’s reading of the anti-discrimination clause declares
    that courts, experts, and the Commission itself have been wrong all along
    about ratemaking in Arizona: Consideration of costs is irrelevant because,
    regardless of costs, the anti-discrimination clause evidently mandates that
    all consumers pay the same amount to the penny.
    ¶73           Concluding that the Commission can side-step a more
    searching judicial review by making a factual finding to which we must
    defer, moreover, conflicts with the purpose of the anti-discrimination
    clause. I readily acknowledge that our Constitution gives the Commission
    28
    SUN CITY v. ACC
    Brown, J., Dissenting
    vast powers to decide issues relevant to its core function. But why is the
    anti-discrimination clause in our Constitution, if not to provide a judicial
    backstop for when that core function breaks down? The provision is
    designed to prevent discrimination and cannot be brushed aside merely
    because the Commission found there were facts supporting consolidation.
    ¶74             Although I conclude the majority’s constitutional analysis is
    wrong, I will refrain from commenting more about the meaning of the
    Constitution in the absence of a reasoned decision from the Commission.
    Instead, I would follow the lead of Alabama Electric, where the court
    remanded for a determination of whether a single rate design created
    undue (and therefore unlawful) discrimination. Ala. Elec. Co-op., Inc., 684
    F.2d at 29. The court explained that discriminatory treatment may be found
    even if “the affected customer groups may be in most respects similarly
    situated,” i.e., they receive similar services, because so long as the “costs of
    providing [the similar] service to one group are different from the costs of
    serving the other, the two groups are in one important respect quite
    dissimilar.” Id. at 27.
    ¶75             We should follow a similar approach here. We are faced with
    a groundbreaking policy change—adoption of the single-tariff rate design,
    the effects of which may be discriminatory if the districts are not similarly
    situated. It is the Commission’s role to make the first run at explaining why
    its rate structure does not violate the anti-discrimination clause and
    § 40-334. Thus, this matter should be remanded to the Commission for a
    determination whether its consolidation resolution violates the Arizona
    Constitution’s ban on discriminatory charges or § 40-334’s mandate that no
    public service corporation may “subject any person to any prejudice or
    disadvantage,” relating to its “rates, charges, services, facilities or in any
    other respect.”
    ¶76           For these reasons, I respectfully dissent.
    AMY M. WOOD • Clerk of the Court
    FILED: AA
    29
    

Document Info

Docket Number: 1 CA-CC 17-0002

Filed Date: 1/23/2020

Precedential Status: Precedential

Modified Date: 1/23/2020

Authorities (42)

Simms v. Round Valley Light & Power Company , 80 Ariz. 145 ( 1956 )

Arizona Corp. Commission v. State Ex Rel. Woods , 171 Ariz. 286 ( 1992 )

Arizona Corp. Commission v. Arizona Public Service Co. , 113 Ariz. 368 ( 1976 )

Arizona Community Action Ass'n v. Arizona Corp. Commission , 123 Ariz. 228 ( 1979 )

US West Communications, Inc. v. Arizona Corp. Commission , 201 Ariz. 242 ( 2001 )

Arizona Department of Revenue v. Dougherty , 200 Ariz. 515 ( 2001 )

Leslie C. v. Maricopa County Juvenile Court , 193 Ariz. 134 ( 1997 )

State Farm Fire & Casualty Co. v. Brown , 183 Ariz. 518 ( 1995 )

Arizona Minority Coalition for Fair Redistricting v. ... , 211 Ariz. 337 ( 2005 )

Webster v. State of Arizona Board of Regents , 123 Ariz. 363 ( 1979 )

Ethington v. Wright , 66 Ariz. 382 ( 1948 )

Town of Wickenburg v. Sabin , 68 Ariz. 75 ( 1948 )

Corporation Com. v. Peoples F. Line, Inc. , 41 Ariz. 158 ( 1932 )

Town of Chino Valley v. City of Prescott , 131 Ariz. 78 ( 1981 )

Moore v. Title Ins. Co. of Minnesota , 148 Ariz. 408 ( 1985 )

DeGroot v. Arizona Racing Commission , 141 Ariz. 331 ( 1984 )

Litchfield Park Service Co. v. Arizona Corp. Commission , 178 Ariz. 431 ( 1994 )

Southwest Gas Corp. v. Arizona Corp. Commission , 169 Ariz. 279 ( 1991 )

Campbell v. Mountain States Telephone & Telegraph Co. , 120 Ariz. 426 ( 1978 )

Consolidated Water Utilities, Ltd. v. Arizona Corp. ... , 178 Ariz. 478 ( 1993 )

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