Opinion for the Court filed by Circuit Judge ROGERS.
Entergy Services, Inc. petitions for review of two orders of the Federal Energy Regulatory Commission resolving whether some or all transmission customers should pay for a class of network upgrades to an electric utility’s transmission grid whose purpose is to protect those generators and equipment in the vicinity of a new interconnecting generator against fault currents. The Commission found that two of Entergy’s Interconnection and Operating Agreements calling for “direct assignment” of costs to the new interconnecting generators of systems upgrades to remedy short-circuit and stability problems were inconsistent with Commission policy and accepted the proposed Agreements subject to revision of the credit provisions.
Entergy Servs., Inc.,
95 F.E.R.C. ¶ 61,437, at 62,610-11,
In challenging the Commission’s orders, Entergy, joined by amicus Southern Company Services, Inc., renews its contention that the Initial Order conflicts with Commission precedent that required direct assignment of costs to a new generator of short-circuit and stability network upgrades necessitated by its interconnection to the transmission grid, and contends that in changing its policy the Commission failed to provide a reasoned explanation, a hearing or commencement of a rulemaking proceeding. Entergy disputes the Commission’s conclusion that new generator interconnections benefit all users on the transmission grid, maintaining that, contrary to the Commission’s cost-causation pricing methodologies, the Initial Order shifts generation interconnection costs from the interconnecting party to other transmission customers and captive ratepayers who do not benefit from the interconnection. Entergy further contends that the Commission improperly ordered revision of two bilaterally executed contracts without any hearing or investigation to determine that they and Entergy’s Pro Forma IA in its tariff were contrary to the public interest.
We hold first, that although Entergy’s challenge regarding the GenPower Keo, LLC Interconnection and Operating Agreement is moot, the appeal is not moot because the Commission required Entergy to alter its Pro Forma IA in its tariff. We hold second, that the Commission did not act in an arbitrary and capricious manner by clarifying its policy regarding credits for short-circuit and stability network upgrades and provided a reasoned explanation for its change in policy. We hold third, that there is sufficient support for the Commission’s conclusion that its pricing policy provides a systemwide benefit for all users of Entergy’s grid, and, therefore, Entergy’s Pro Forma IA in its tariff was unjust and unreasonable, and that the Commission did not otherwise violate the Federal Power Act (“FPA”), 16 U.S.C. § 824e (2000). Accordingly, we deny the petition for review.
I.
Consistent with the Commission’s decision in
Tennessee Power Co.,
90 F.E.R.C. ¶ 61,238,
The petition, as filed, involves the Interconnection and Operating Agreements (“IAs”) that Entergy executed with two electric power generators — Washington Parish Energy Center, LLC, and GenPower Keo, LLC. In accord with the
May 18 Order
and the
Pro Forma
IA, the IAs required these generators to bear the costs of the short-circuit and stability upgrades necessary to prevent their interconnection to Entergy’s grid from undermining the integrity of the grid. The Commission accepted the IAs subject to revision, in light of the Commission’s May 17, 2001 clarification in
Consumers Energy Co.,
95 F.E.R.C. ¶ 61,233,
II.
As a threshold matter, the Commission contends that the court lacks jurisdiction to consider Entergy’s challenge regarding the GenPower IA because it is moot. In response to Entergy’s request, the Commission states in its brief that it approved termination of the GenPower IA effective May 16, 2002. Entergy does not dispute this assertion. Under the circumstances, then, this portion of Entergy’s appeal is moot.
See Arizonans for Official English v. Arizona,
Entergy correctly states, however, that the appeal itself is not moot. Entergy does not challenge in its Reply Brief the assertion by intervenors Tenaska, Inc. and Washington Parish Energy Center, LLC that because the Washington Parish IA does not require any network upgrades and Entergy has not awarded any, there are “serious questions whether the hardship that Entergy has allegedly suffered has ‘the concrete quality and immediacy necessary to invoke judicial review.’ ” Intervenors’ Br. at 28 (quoting
Tennessee Gas Pipeline Co. v. FERC,
III.
Turning to Entergy’s challenge to the Commission’s global revision to the
Pro Forma
IA, our review of the Commission’s orders is pursuant to the arbitrary and capricious standard of the Administrative Procedure Act, 5 U.S.C. § 706(2)(A).
See Process Gas Consumers Group v. FERC,
A.
Insofar as Entergy’s challenge to the Commission’s orders rests on the contention that the Commission impermissibly departed from its precedent, it is without merit. Entergy relies on cases holding that while an agency may change its policy based on its view of the public interest,
see Greater Boston Television Corp. v. FCC,
On rehearing the Commission acknowledged that language in certain of its prior orders could be read to permit the direct assignment of the costs of short-circuit and stability network upgrades.
Rehearing Order,
96 F.E.R.C. at 62,202,
Consequently, we conclude that even if the Commission’s orders constitute more than a mere clarification of policy, as En-tergy maintains, the Commission provided a reasoned explanation for the change in policy. In the orders on review, the Commission was clarifying inadvertent statements in prior orders that would have allowed “and” pricing, where a customer pays for use of the grid at its incremental expansion cost and later is also charged for use of the grid at its average cost.
See Pennsylvania Elec. Co.,
58 F.E.R.C. ¶ 61,278,
B.
Somewhat more problematic for the Commission is Entergy’s contention that the Commission was arbitrary and capricious because its allowance of credits is based on the- erroneous view that short-circuit and stability network upgrades benefit all users of the transmission system. Entergy maintains that instead of benefit-ting the entire system, these short-circuit and stability upgrades benefit only the generator connecting to the transmission system. Entergy rejects the notion that by preventing degradation of the reliability of the transmission system, these upgrades enhance the system and thereby benefit all users. Absent expansion of the capacity or enhancement of the reliability of the system beyond that which existed prior to the new interconnection, there is, in Entergy’s view, no benefit to all system users. Responding to the Commission’s focus on incentives to spur interconnection of new generation and the need to ease entry for competing generation, Entergy characterizes the Commission’s incentives as a subsidy, reducing costs for one market participant at the expense of others. Upon review of the Commission’s orders, we ultimately conclude that the Commission supplied sufficient reasoning for its policy judgment.
See Western Massachusetts Elec. Co. v. FERC,
The Commission stated on rehearing that:
As we noted in Consumers Energy, the integrated transmission grid is a cohesive network whose expansion benefits all users of the grid. Even if they do not increase network capacity, short-cir *543 cuit and stability-related upgrades that facilitate network expansion benefit all users, not just the newlyinterconnecting generator, since the grid is continuously expanding and all users of the grid benefit from its continued stability.
Rehearing Order, 96 F.E.R.C. at 62,202 (emphasis in original). Entergy attacks such statements as conclusory and circular. There is some merit to this position. The Commission’s view stems from its previous decisions concluding that a larger system is a better system. See, e.g., PSC of Colorado, 62 F.E.R.C. at 61,061. Still PSC of Colorado does little to offer a rationale.
It is true the Commission said more on rehearing, noting that the reliability upgrades “are crucial to protect other generators and equipment in the vicinity of the new generator against potential damage resulting from fault currents.”
Rehearing Order,
96 F.E.R.C. at 62,202 n.27 (quoting
Consumers Energy,
96 F.E.R.C. at 61,561). Entergy does not challenge this as a factual statement and its description of its experience in attracting interconnection suggests that such protection is of benefit to it. Indeed, in
Western Massachusetts,
the court recognized that upgrades designed to “preserve the grid’s reliability” constitute “system enhancements [that] are presumed to benefit the entire system.”
Our conclusion that the Commission has adequately set forth its rationale, however, rests on its explanation in the Consumers Energy decisions that the Commission relied upon in the orders on review. See Initial Order, 95 F.E.R.C. at 62,611; Rehearing Order, 96 F.E.R.C. at 62,201-03 & nn.17 & 19. In addition to evidence that these reliability upgrades are crucial to protect generation and other equipment in the vicinity of the new generator from fault currents, the Commission explained in denying rehearing in Consumers Energy that “[h]aving a standard policy that requires credits for customer-funded network upgrades minimizes the incentive for utilities to ‘gold plate’ their systems at customers’ expense, and thereby reduces the potential for disputes ... over what constitutes a necessary upgrade.” Consumers Energy, 96 F.E.R.C. at 61,560. Further, the Commission explained, its crediting policy creates more accurate price signals by placing “new generators on an equal footing with pre-existing, utility-owned generators whose transmission costs generally were rolled into [the] transmission rate base.” Id.
The Commission’s rationale for crediting network upgrades, based on a less cramped view of what constitutes a “benefit,” reflects its policy determination that a competitive transmission system, with bar
*544
riers to entry removed or reduced, is in the public interest. That Entergy would confine “benefits” to increases in capacity of the transmission system or to enhancements other than maintained stability in an expanded system, while not an implausible approach, overlooks the Commission’s long-held view of the benefits of expansion and the role of network system upgrades. Entergy’s attempt to challenge the Commission’s view of “benefit” by distinguishing its precedent does not negate the consistent application of the Commission’s long-held view. While Entergy points out, for example, that
PSC of Colorado
addressed direct assignment of radial transmission facilities to serve remote native load and not interconnection of generation or direct assignment of facilities necessary for interconnection, the Commission’s crediting policy for short-circuit and stability upgrades is consistent with its view in that case that the transmission grid is an integrated whole.
See PSC of Colorado,
62 F.E.R.C. at 61,061. Moreover, the Commission points out, because
PSC of Colorado
was decided when generation and transmission were predominantly offered as a bundled service, “the exact func-tionalization of costs between generation and transmission was not a critical issue.” Respondent’s Br. at 10. When confronted with that issue the Commission concluded that such system enhancements benefit the entire system. In
Western Massachusetts,
for example, the Commission stated there was a systemwide benefit based on three considerations: (1) “the physical configuration of the upgrades makes it clear that their purpose is not merely to provide a power path from the [new] facility to the [transmission] grid ... but to enhance a system used by many customers”; (2) “lo-adflow over the upgraded grid facilities will not remain constant”; and (3) “it cannot be determined for sure that the upgrades would merely restore the transfer capability of the [transmission] grid to the precise level that existed prior to the [new] interconnection.”
Western Massachusetts,
While Entergy does not view the expanded transmission system as an enhanced system over the fault-free system that existed prior to an interconnection by a new generator, we conclude that in light of the regulatory expertise to which courts owe deference, the Commission has reasonably explained that its crediting pricing policy avoids both gold plating and less favorable price signals such that the enlarged transmission system, which it views as a public good, can function reliably and continue to expand. Consequently, we conclude there is adequate support for the Commission’s determination that short-circuit and stability network upgrades are an enhancement that benefits all users.
Entergy’s other challenges to the Commission’s pricing policy fare no better. Entergy’s contention that the Commission acted unlawfully because it failed to undertake a factual analysis of the short-circuit and stability upgrades to determine whether they provide system benefits ignores the fact that the Commission relied on Entergy’s statements regarding the problems the upgrades were designed to resolve, as Entergy noted in its Rehearing Request.
See Rehearing Order,
96 F.E.R.C. at 62,202 n.21. Regarding Entergy’s subsidy contention, the Commission has long rejected the argument that transmission credits for network upgrades result in “cross subsidization” by native load customers as based on the faulty premise that native load customers receive no benefit from the upgrades; no subsidization occurs except where customers pay for other customer’s sole use facilities.
See PSC of Colorado,
62 F.E.R.C. at 61,062. Entergy’s reliance on a statement in Order No.2000 concerning averaging or
*545
socialization of costs is misplaced; the Commission was referring to congestion management costs that do not involve generator interconnection.
See Regional Transmission Organizations,
Order No.2000, FERC Stats.
&
Regs. ¶ 31,089, at 31,219 (1999), 65 Fed.Reg. 810 (2000),
on reh’g,
Order No.2000-A, FERC Stats.
&
Regs. ¶ 31,092, 65 Fed.Reg. 12,088 (2000) (codified at 18 C.F.R. § 35.34),
aff'd, Pub. Util. Dist. No. 1 v. FERC,
C.
Finally, Entergy essentially revives its “but for” argument in contending that the Commission failed to investigate and address the underlying facts in its cost allocation decisions and hence, without a hearing, unlawfully ordered modification of Entergy’s
Pro Forma
IA provisions in its tariff. As the Commission stated on rehearing, “[u]nder FPA Section 206, 16 U.S.C. § 824e (2000), the Commission may require a public utility to revise its tariff to reflect a Commission policy determination that the existing tariff is unjust and unreasonable and that the required change is just and reasonable,” and “may take action under Section 206 in a proceeding that began as a Section 205 proceeding.”
Rehearing Order,
at 62,203 n.34 (citing
Sea Robin Pipeline Co. v. FERC,
Nor did the Commission abuse its discretion in finding that a formal oral evidentiary hearing was neither necessary nor required.
See Arkansas Elec. Energy Consumers v. FERC,
*546 Accordingly, we deny the petition for review.
