Opinion for the Court filed by Circuit Judge SENTELLE.
PG&E Gas Transmission, Northwest Corporation (PG&E) petitions for review of Federal Energy Regulatory Commission (FERC) orders suspending,
PG&E Gas Transmission, Northwest Corp.,
90 F.E.R.C. ¶ 61,349,
I. Background
PG&E operates a natural gas pipeline running 612 miles from the Washington/Canada border to the border between Oregon and California. On its pipeline, PG&E sells two primary types of natural gas transportation capacity — firm and in-terruptible. Firm capacity is purchased on a monthly basis and cannot be interrupted or curtailed except in limited circumstances. Interruptible transportation (IT) capacity can be interrupted when necessary to provide service to higher priority customers, such as firm customers. IT capacity is bid for as needed, rather than purchased monthly. PG&E’s gas tariff sets the maximum per-mile rates PG&E can charge for its IT services. The total amount a shipper pays for service, and thus the revenue generated, is derived by multiplying the per-mile bid by the number of miles the gas is to be transported.
Prior to the proceedings under review, PG&E allocated IT capacity first to shippers bidding the maximum per-mile rate, regardless of distance, and hence regardless of revenue. PG&E then allocated any remaining capacity to shippers bidding less than the maximum per-mile tariff rate by ranking bids based on total revenue. Ties between bidders, at both the maximum and sub-maximum rates, were broken according to a shipper’s position in the IT queue. Thus, if two shippers’ bids were tied, the shipper with the higher position in the queue would be allocated the IT capacity. Queue positions were determined by a lottery held by PG&E in 1987.
See Pacific Gas Transmission Co.,
40
On March 1, 2000, PG&E submitted a tariff filing pursuant to Section 4 of the Natural Gas Act, 15 U.S.C. § 717c (2000) (NGA), seeking to change its IT capacity allocation method. PG&E proposed to use the system it employed to rank sub-maximum rate bidders to rank bids from maximum rate bidders as well. Under this “revenue-based” or “distance-based” proposal, allocation would be based on net revenue generated per dekatherm, with net revenue being determined by multiplying the distance in pipeline miles from the receipt point to the delivery point by the rate bid plus surcharges. Consequently, a long-haul maximum rate bidder would always defeat a shorter-haul maximum rate bidder, because the long-haul shipper’s total bid would always generate greater revenue. If any ties remained between bids generating the same net revenue, capacity would be allocated pro rata — that is, each tied bidder would receive a proportionate share of the remaining capacity. In sum, under PG&E’s filing, the IT queue would be replaced with revenue-based allocation followed by a pro rata tiebreaker. On March 31, 2000, the Commission accepted and suspended FERC’s tariff filing, and asked PG&E to provide further “justification as to the benefits gained by the pipeline and its shippers if such a change is implemented.” PG&E Gas Transmission, Northwest Corp., 90 F.E.R.C. ¶ 61,349, at 62,154 (Suspension Order). PG&E filed additional supporting evidence for its proposal and sought rehearing of the Suspension Order, claiming that the Suspension Order improperly required PG&E to submit evidence of the unreasonableness of the IT queue and the superiority of its proposed distance-based allocation mechanism. Under NGA § 4, PG&E contended, a pipeline proposing a rate change need only prove that its proposed rate is “just and reasonable.”
On September 14, 2000, FERC rejected PG&E’s revenue-based allocation proposal.
PG&E Gas Transmission, Northwest Corp.,
92 F.E.R.C. ¶ 61,202,
Shortly after FERC’s ruling in
PG&E I,
PG&E submitted a new tariff filing that replaced the queue with simple
pro rata
allocation among all maximum rate bidders. Under that tariff, each maximum rate bidder receives a proportionate share of capacity regardless of revenue generated by its total bid, and thus regardless of
Meanwhile, PG&E requested rehearing of FERC’s
PG&E I
ruling, claiming that FERC failed to address several Commission precedents that allowed distance-based allocation. On February 8, 2001, FERC denied PG&E’s request for rehearing.
PG&E Gas Transmission, Northwest Corp.,
94 F.E.R.C. ¶ 61,119,
PG&E timely filed this petition for review.
II. Analysis
Under NGA § 4, a pipeline proposing a rate change has the burden of showing that the proposed rate is just and reasonable.
Exxon Corp. v. FERC,
A. Mootness
FERC claims that we should dismiss this petition as moot because FERC approved, and PG&E implemented, its pro rata allocation proposal after FERC rejected PG&E’s revenue-based proposal. Thus, FERC argues that allowing the revenue-based mechanism would not provide PG&E with any relief because the pro rata mechanism has already replaced the queue and performs the same capacity allocation function the revenue-based mechanism would perform. We disagree. A controversy persists over whether PG&E should be allowed to implement its preferred method of IT capacity allocation.
While FERC is certainly correct that both the pro rata and revenue-based proposals replace the queue and allocate IT capacity between maximum rate bidders, the revenue-based mechanism is undisput-edly PG&E’s preferred allocation method. Indeed, PG&E proposed pro rata allocation only after FERC rejected its revenue-based proposal. Therefore, while approval of the “second-best” pro rata mechanism may have lessened PG&E’s injury, the injury persists in that PG&E has been precluded from implementing its preferred method of allocation.
Unquestionably, a favorable ruling of this Court would redress PG&E’s injury. If this Court grants PG&E’s petition for review, we will remand the case to FERC for it to reconsider the revenue-based mechanism in light of this Court’s opinion. If, on remand, the Commission approves the filing, PG&E will implement the revenue-based mechanism in place of the existing pro rata system. Thus, a favorable decision would provide PG&E with its desired relief: a fair consideration of the revenue-based mechanism, and possibly, an opportunity to implement its preferred method for allocating IT capacity.
The fact that both the existing
pro rata
mechanism and the proposed revenue-based mechanism replace the queue and perform the same function — allocating IT capacity — carries no weight in the mootness analysis. FERC has cited no authority for its proposition that merely because an agency approves a litigant’s second-best option to perform a given function, the litigant may not continue to appeal the rejection of its most favored option. Our decision in
Rio Grande Pipeline Co. v. FERC,
B. Merits
On the merits, PG&E argues that FERC acted arbitrarily and capriciously by failing to adequately address Commission precedents that approved distance-based mechanisms for allocating transportation capacity. We agree.
In its orders below, the Commission held that PG&E’s proposal violated 18 C.F.R. § 284.9(b)’s prohibition against “undue discrimination,” by making it more difficult for maximum rate short-haul shippers to obtain IT capacity.
PG&E I,
92 F.E.R.C. at 61,677. In examining the reasoning that undergirds FERC’s ruling, we note that discrimination is undue only if “a pipeline’s rate schedule creates a preference without a reasonable basis.”
Algonquin Gas Transmission Co. v. FERC,
Throughout the course of this litigation, PG&E has consistently pointed to several cases in which FERC approved distance-based allocation methods and held that such methods did not constitute undue discrimination against short-haul shippers. In
PG&E I,
FERC utterly failed to confront these cases. In its Rehearing Order, FERC’s attempt to distinguish these precedents was confusing at best, if not outright disingenuous. Finally, on review before us, FERC counsel concocted a harmonization of Commission precedent with the Commission ruling. Of course, this Court cannot consider such
post hoc
justifications, but may only consider the grounds on which the Commission actually relied in making its decision.
Algonquin Gas Transmission,
In
Northern Natural Gas Co., 82
F.E.R.C. ¶ 61,077,
Similarly, in
Tennessee Gas Pipeline Co.,
65 F.E.R.C. ¶ 61,224, at 62,111,
In its Rehearing Order in this proceeding, FERC misleadingly tried to distinguish Tennessee. See 94 F.E.R.C. at 61,-452. The Commission only mentioned Tennessee’s, holding that the pipeline had to delete any consideration of quantity from its allocation mechanism so as not to discriminate against small or short-haul shippers. Id. However, FERC completely ignored the next paragraph in Tennessee, in which the Commission explicitly upheld consideration of distance against charges of undue discrimination. Tennessee, 65 F.E.R.C. at 62,111. Thus, FERC utterly failed to distinguish the relevant holding of Tennessee and explain why its reasoning should not be applied to the present case.
Finally, in
Trunkline Gas Co.,
64 F.E.R.C. ¶ 61,141, at 62,126,
The Commission’s attempt to distinguish Trunkline in its Rehearing Order is confusing at best. First, FERC seems to claim that Trunkline applied only to below maximum rate bids. See Rehearing Order, 94 F.E.R.C. at 61,452. This is flatly wrong, as even FERC counsel admitted at oral argument. See Tr. of Oral Arg. at 28-29. Second, FERC claimed “[t]he Trunkline issue is different because it did not discuss allocation methodology for resolving ties when the bids are equal.” Rehearing Order, 94 F.E.R.C. at 61,452. It is true that Trunkline’s revenue-based proposal did not involve breaking ties between equal bidders, but neither does PG&E’s proposal in any relevant sense. That is, in Trunkline, bids were ranked based on adding the rates for each zone traveled. Similarly, in PG&E’s proposal, bids are ranked based on multiplying the per-mile rate by the number of miles traveled. The fact that PG&E’s proposal breaks ties between bidders who bid the same per-mile rate is not a relevant difference from the proposal in Trunkline when, under both systems, a maximum rate short-haul shipper can always be outbid by a longer-haul shipper. Thus, the distinction to which FERC alluded between the zone-based system in Trunkline and the distance-based system in the PG&E tariff is a distinction without a difference.
In sum, FERC’s attempts to distinguish its precedents approving distance-based allocation were alternately nonexistent, misleading, and irrelevant. On brief to this Court, counsel argues that these precedents are distinguishable because they involved zone-based systems with rates based on several factors, of which distance is only one. This contrasts,
As outlined above, FERC’s orders in this case do not adequately explain why the Commission’s precedent in favor of distance-based allocation does not compel approval of PG&E’s filing. In “gloss[ing] over” these precedents, FERC “cross[ed] the line from the tolerably terse to the intolerably mute.”
Greater Boston Television Corp. v. FCC,
III. Conclusion
We hold that this case did not become moot when FERC approved PG&E’s pro rata allocation proposal after it rejected PG&E’s revenue-based mechanism. A live controversy persists regarding whether PG&E should be able to implement revenue-based allocation of IT capacity. On the merits, we hold that FERC failed to adequately address Commission precedent allowing pipelines to consider distance when allocating transportation capacity. Accordingly, we grant the petition for review and vacate FERC’s orders and remand for further consideration in light of this opinion.
So ordered:
Notes
. We address the petition for review of PG&E's customers in a companion case,
Duke Energy Trading & Mktg., L.L.C. v. FERC,
