Delivery to Certain Specified Rural Electric Distribution Cooperatives” (Article 4). Under each Article, a subsection 4 contains the provisions for “Compensation by the Sam Dam Co-op to Gulf States.”
Subsection 4 of Article 3 provides that Sam Rayburn shall compensate Gulf States monthly for energy delivered to municipal members according to an attached rate schedule, “SR — 1”. It provides, in addition, that Sam Rayburn may negotiate for modification of the SR — 1 rates if the SPA lowers the cost of power at the dam site, and that Gulf States may negotiate for modification if the SPA increases dam-site cost. Further, this provision stipulates that a change in SPA charges gives one party a privilege to open negotiations for a rate change; if the parties are unable to agree on a new rate, the party with the privilege of negotiation may cancel the entire contract.
Subsection 4 of Article 4 provides that Sam Rayburn must compensate Gulf States for power delivered to its cooperative members at rates set by a second rate schedule, denominated “SR — 2”. Like its counterpart in Article 3, it contains a renegotiation clause, but renegotiation privileges with respect to SR — 2 rates need not be triggered by a change in SPA pricing. Rather, under the provisions of Article 4, Gulf States may make a written request for renegotiation any time after January 1, 1970, but not more often than once every five years; if the parties are unable to agree on a modification of SR — 2 rates after a renegotiation request from Gulf States, then Gulf States may, at its sole option, cancel the entire contract on thirty-six months’ notice. It should be noted that Sam Rayburn has no renegotiation or cancellation privileges under Subsection 4 of Article 4.
In addition to the involuted, conjoint stipulations already mentioned, Subsections 4 of both articles contain the following identical provision:
(c) If a rate increase or decrease should be made applicable to the service rendered by Gulf States to the Sam Dam Co-op hereunder by final order or by acceptance for filing by Gulf States of any regulatory body having jurisdiction thereof, such increased or decreased rates shall be applicable to such service rendered hereunder from and after the effective date of such rate change.
This language is the source of the controversy among Sam Rayburn, Gulf States, and the Federal Power Commission.
In companion cases, FPC v. Sierra Pacific Power Co.13 and United Gas Pipe Line Co. v. Mobile Gas Service Corp.,14 the Supreme Court announced the so-called Sierra-Mobile doctrine. It there ruled that, except in rare cases,15 the Federal Power Commission has no power under the Federal Power Act16 or the Natural Gas Act,17 to accept for filing rates that contravene existing contracts. This court has applied and reaffirmed the doctrine consistently, most recently in City of Richmond v. FPC.18 The Sierra-Mobile doctrine does not, of course, dictate that unilateral rate changes may never be accepted by the Commission. In United Gas Pipe Line Co. v. Memphis
13
350 U.S. 348, 76 S.Ct. 368, 100 L.Ed. 388 (1956).
14
350 U.S. 332, 76 S.Ct. 373, 100 L.Ed. 373 (1956).
15
The Commission is empowered, under § 206(a) of Title II of the Federal Power Act, to prescribe a change in existing contract rates whenever it determines that existing rates are unjust or unreasonable. There is no contention in this case that the rates fixed by the existing contract between Sam Rayburn and Gulf States are either. The Commission may also reject a newly filed contract if after a hearing it finds that the contract is not in the public interest, pursuant to § 205(e).
16
16 U.S.C. § 791a et seq. (1970).
17
15 U.S.C. § 717 et seq. (1970).
18
156 U.S.App.D.C. 315, 481 F.2d 490, cert. denied, Indiana & Michigan Electric Co. v. Anderson Power and Light of City of Anderson, Indiana, 414 U.S. 1068, 94 S.Ct. 578, 38 L.Ed.2d 473 (1973).