Opinion for the Court filed by Circuit Judge RANDOLPH.
These are petitions for judicial review of a Federal Energy Regulatory Commission ruling that a 60-day notice-of-termination rule does not apply to power sales contracts terminated by 21 of the counter-parties of the Power Company of America (PCA).
PCA is a power marketer. As such, it buys and sells wholesale electricity at market-based rates but does not own generation or transmission facilities. It purchases electricity from other power marketers and from traditional utilities. In contrast to power marketers, traditional utilities not only buy or sell electricity, they also own generation or transmission facilities. Power marketers and traditional utilities receive different regulatory treatment, especially in regard to the transaction documents they are requirеd to file with the Commission.
During the summer of 1998, several entities terminated their contracts to sell power to PCA, purportedly because of PCA’s weak financial condition. PCA’s creditors then forced it into involuntary bankruptcy.
The present dispute is about the notice PCA’s counterparties had to give before unilaterally terminating their contracts. Those contracts apparently do not addrеss the matter of notice, but PCA claims a Commission regulation does. The regulation requires 60 days notice to the Commission to terminate “a rate schedule or part thereof required to be on file with the Commission.” 18 C.F.R. § 35.15(a).
1
The issue, then, is whether the terminated contracts were “required to be on file with the Commission.” The canceling parties filed notices with the Commission as a precautionary meаsure, but not sufficiently far in advance to satisfy PCA. The Commission dismissed the notices as not required: all of the canceled transactions were “short-term power sales made from time to time
*842
at the discretion of the parties,” and, as such, did not have to be on file under 18 C.F.R. § 35.15(a).
See Southern Co. Energy Marketing, L.P.,
84 F.E.R.C. ¶ 61,-199, at 61,986-87 & n.3,
I. Jurisdictional Issues
A. Standing
PCA concedes that the contracts at issue have been “irrevocably cancelled.” Final Brief of Petitioner at 34. Thе Commission did not cancel the contracts; private parties did, many of whom are not party to this suit. It is not obvious that PCA can show an “injury in fact” that is “fairly traceable” to the Commission’s actions and that will likely be “redressed by a favorable decision,” as Article III requires.
Bennett v. Spear,
PCA’s ultimate injury is the termination of its contracts. Although the Commission did not terminate them, it acquiesced in their termination by others. If, as PCA claims, thе Commission had a duty to prevent those terminations by requiring more notice than was given, then PCA’s injury is two-fold — the terminations by others, and the Commission’s failure to prevent this. In these circumstances, the latter injury is cognizable. . The “loss of a valuable contractual interest in a licensee is an injury sufficient to invoke our jurisdiction.”
Telephone and Data Sys., Inc. v. FCC,
Redressability is another matter. PCA is not asking for damages or injunctive relief in this court, although it is seeking such relief elsewhere. PCA stated that the Commission “has the power to fashion any number of remedies, and PCA would ask FERC to use that power if this Court holds that violations of the FPA and FERC regulations have occurred.” Final Reply Brief of Petitioner at 4. The Commission does not dispute that it has remedies for unlawful contract terminations. In holding that the terminated agreements were not subject to the notice-of-termination rule, however, the Commission effectively held that the contracts were legally terminated.
As
such,
no
contract remedies will be forthcoming if the Commission’s determination stands. In these circumstances, a declaratory ruling that the terminations at issue are subject to the notice requirement is a “ ‘necеssary first step on a path that could ultimately lead to relief fully redressing the injury’.”
Telephone and Data Sys.,
*843 B. Failure to Properly Intervene and Obtain Party Status
The Commission treated each contract termination as a separate proceeding and assigned each its own docket number, though it disposed of them on a сonsolidated basis. PCA sought to become a party to each proceeding by intervention. The Commission permitted PCA to intervene in most proceedings but denied intervention in the six proceedings involving Idaho Power Co.; PG&E Energy Trading-Power, L.P.; South Jersey Energy Co.; Vitol Gas & Electric LLC; El Paso Energy Marketing Co.
3
; and Cook Inlet Energy Supply, L.P.
See New York State Elec. & Gas Corp.,
85 F.E.R.C. ¶ 61,196 (1998) (denying PCA’s motions to intervene in the Vitol and Cook Inlet proceedings);
Southern Co. Energy Mktg. L.P.,
86 F.E.R.C. ¶ 61,131,
We have no jurisdiction over proceedings in which PCA is not a party because only “part[ies] to a proceeding” may seek judicial review under the Federal Power Act. See 16 U.S.C. § 825i(b). The Commission concluded that PCA did not properly intervene and therefore did not become a party to these six proceedings. PCA did not file timely motions to intervene, and the Commission was not obligated to accept untimely ones.
PCA claims that “FERC had no grounds on which to deny intervention.” Final Brief of Petitioner at 35. Under the Commission’s rules, however, the burden is on the untimely movant to show good cause to intervene. See 18 C.F.R. § 385.214(b)(3). PCA has not demonstrated good cause, certainly not to a degree sufficient to wаrrant our upsetting the Commission’s application of its own procedural rule. PCA also asserts that the Commission arbitrarily considered only good cause, to the exclusion of four other factors identified in the rule. Final Brief of Petitioner at 36-38. Failure to establish good cause is, however, a sufficient condition to deny intervention, so the Commission was not obligated to consider any other factor. See 18 C.F.R. § 385.214(b)(3). 4
II. The Merits
PCA has four arguments: (1) the Commission erroneously viewed 17 of the 21 terminations as involving short-term discretionary sales; (2) the Commission’s interpretation of 18 C.F.R. § 35.15(a) violates the Federal Power Act; (3) the Commission’s interpretation violates the regulation itself; and (4) the Commission should have applied its new interpretation (assuming its validity) prospectively only.
A. The Nature of the Terminated Transactions
PCA asserts that the Commission misconceived the nature of the terminated transactions, that 17 of them were umbrel *844 la agreements or their functional equivalents. See Final Brief of Petitioner at 19-24. We have jurisdiction to consider only PCA’s argument regarding 12 of the transactions because PCA was not a party to the proceedings involving the other five. 5 See supra section I.B.
One of the 12, Washington Water Power Company (WWPC), clearly did not terminate an umbrella agreement with PCA. WWPC’s notices of termination stated that it was terminating transactions under the Western Systems Power Pool Agreement.
See
Joint Appendix at 358 & 657. While the Pool Agreement may constitute an umbrella agreement “required to be on file,” WWPC could not have terminated it merely by terminating individual transactions under it. The Pool Agreement has numerous parties in addition to WWPC and PCA, and as such is not subject to termination by a single party. As the Commission put it in
Western Systems Power Pool,
55 F.E.R.C. ¶ 61,495, at 62,-716,
We will assume arguendo that the remaining 11 cancellations were of umbrella agreements. PCA still must establish that these umbrella agreements were “required to be on file with the Commission.” 18 C.F.R. § 35.15(a). If they were not required to be on file, they are not subject to the Commission’s 60-day notice-of-termination requirement. PCA makes nо attempt to prove this essential predicate.
As it turns out, the canceled agreements were not required to be on file, whether they were umbrella agreements or not. This is so because these 11 terminating counterparties were power marketers like PCA rather than traditional utilities. 6 The Commission, in its original order holding that notice of termination was not necessary, explained that for transactions “involving power sales by power marketers, there are no umbrella service agreements on file and likewise the particular transac *845 tion terms were not on file.” 84 F.E.R.C. ¶ 61,199, at 61,986 & n.3. The Commission further explained in its order on rehearing that “the filings by power marketers involved specific market-based power sales transactions that were neither on file with the Commission nor subject to any filed umbrella agreements, but were made pursuant to an umbrella tariff on file.” 86 F.E.R.C. ¶ 61,131, at 61,455.
Power marketers are not required to file umbrella agreements, so the notiee-of-ter-mination regulation in 18 C.F.R. § 35.15(a) does not apply to umbrella agreements they terminate. Power marketers instead file umbrella tariffs and quarterly reports summarizing past transactions.
See
86 F.E.R.C. ¶ 61,131, at 61,459
&
n.36;
see also Heartland Energy Servs., Inc.,
68 F.E.R.C. ¶ 61,223, at 62,065-66,
We decline to address PCA’s argument in its reply brief that the umbrella agreements were required tо be on file because they were contained in quarterly reports that are required to be on file.
See
Final Reply Brief of Petitioner at 7-8. This argument was not raised in PCA’s opening brief and is therefore waived.
See Rollins Environmental Servs. (NJ) Inc. v. U.S. EPA,
B. The Federal Power Act
PCA asserts that even if the Commission correctly treated the canceled transactions as short-term discretionary power sales, its refusal to apply the 60-day no-tiee-of-termination requirement nonetheless violates the Federal Power Act. PCA first claims that the 'Commission’s interpretation of its regulation contravenes the Commission’s regulatory obligations. PCA has not identified with any specificity what regulatory obligations the Commission has shirked. It is not the court’s role to fill in the blanks in counsel’s argument.
PCA also seems to argue (the argument is not developed) that the Act’s jurisdictional provision implies that the filing requirements cover the canceled transactions. The premises are obscure, but the reasoning apparently is that the Act covers *846 “sales,” and the term “sales” contemplates actual transactions with agreed-upon prices and quantities, not umbrella agreements. See Final Brief of Petitioner at 25. Cancellation of individual transactions rather than of umbrella agreements presumably is, under this theory, the critical event because it implicates the Act’s jurisdictional provision.
This syllogism ignores the determinative рart of the Act — the part setting forth the filing requirements. Section 205(c) of the Act governs filing and states:
Under such rules and regulations as the Commission may prescribe, every public utility shall file with the Commission, within such time and in such form as the Commission may designate, and shall keep open in convenient form and place for public inspection schedules showing all rates and charges for any transmission or sale subject to the jurisdiction of the Commission, and the classifications, practices, and regulations affecting such rates and charges, together with all contracts which in any manner affect or relate to such rates, charges, classifications, and services.
16 U.S.C. § 824d(c). The Commission has held that traditional utilities and power marketers who engage in market-based rate transactions are rеquired to file quarterly reports summarizing transactions, and that these reports satisfy the filing requirements of § 205(c). See 86 F.E.R.C. ¶ 61,131, at 61,459. PCA has not even questioned the Commission’s judgment in this regard so neither will we.
C. The Commission’s Interpretation of its Regulation
The Commission interpreted 18 C.F.R. § 35.15(a) as not applying to the canceled transactions because the agreements were not required to be on file, which is the predicate for the 60-day notice-of-termination requirement.
See
84 F.E.R.C. ¶ 61,199, at 61,986-87; 86 F.E.R.C. ¶ 61,131, at 61,457. On rehearing, PCA pointed out that the Commission had previously applied the notiee-of-termi-nation rule to transactions like the ones at issue.
See Portland Gen. Elec. Co.,
75 F.E.R.C. ¶ 61,310, at 62,002,
PCA claims that the regulation cannot sustain this reinterpretation. In PCA’s view, the overruling of Portland General wrote the “part thereof’ language out of § 35.15(a) without notice-and-comment rulemaking. In actuality, the Commission simply altered its view of what is “required to be on file,” holding that the discretionary power transactions at issue were not in that class. 18 C.F.R. § 35.15(a); 86 F.E.R.C. ¶ 61,131, at 61,457. In doing so, the Commission merely narrowed the category of “rate schedule^] or part[s] thereof’ that are “required to be on file” (18 C.F.R. § 35.15(a)); it left the “part thеreof’ language undisturbed. The regulation does not forbid such narrowing.
D. Retroactivity
In overruling Portland General, the Commission faced the choice of apply *847 ing the new rule of law prospectively or retrospectively. It chose the latter course, a choice PCA attacks as arbitrary and capricious.
Administrative agencies have relatively more freedom to apply retroactively “new applications of law, clarifications, and additions” than “substitution[s] of new law for old law that was reasonably clear” because retroactive application of a wholly new rule may disrupt settled expectations and implicate fairness concerns.
Williams Natural Gas Co. v. FERC,
(1) whether the rule is actually a departure from clear prior policy or instead a new policy for a new situation (or a clarification of a prior policy); (2) whether retroactive application will be more likely to hinder than to further the operation of the new rule; and (3) whether retroactive application would produce substantial inequitable results, with particular reference to whether parties relied on the old standard.
86 F.E.R.C. ¶ 61,131, at 61,457-58. It concluded that all three factors favored retroactive application, noting that participants in this market require flexibility to manage the terms and conditions of their transactions, that there is no purpose in the Commission’s reviewing the termination of transactions whose terms and conditions were never required to be reviewed in the first place, and that PCA suffered no substantial inequity because “PCA knew that these individual power sales were not on file with the Commission, but rather were made pursuant to umbrella tariffs and/or umbrella service agreements on file.” 86 F.E.R.C. ¶ 61,131, at 61,458-59.
The Commission’s three-factor test differs slightly frоm the way we would go about deciding whether agency adjudications may be given retroactive effect.
7
The Commission’s approach (and ours) also differs from Supreme Court retroactivity principles with respect to judicial rulings, under which court judgments must be applied retroactively with few exceptions.
See, e.g., Harper v. Virginia Dep’t of Taxation,
Petitions denied.
Notes
. The relevаnt provision states in its entirety: "When a rate schedule or part thereof required to be on file with the Commission is proposed to be cancelled or is to terminate by its own terms and no new rate schedule or part thereof is to be filed in its place, each party required to file the schedule shall notify the Commission of the proposed cancellation or termination on thе form indicated in § 131.53 of this chapter at least sixLy days but not more than one hundred-twenty days prior to the date such cancellation or termination is proposed to take effect.” 18 C.F.R. § 35.15(a).
. We disagree with the Commission that
New York State Elec. & Gas Corp. v. FERC [NYSEG],
. El Paso Power Services Co. is the successor-in-interest to El Paso Energy Marketing Co.
See PG&E Energy Trading-Power, L.P., 86
F.E.R.C. ¶ 61,303, at 62,055 n. 1,
. The intervenors in this appeal argue that PCA did not properly intervene in the Enron proceeding. See Joint Brief for Intervenors at 21 n.8. The Commission to this point has treated PCA as a party to that proceeding and so will we.
. The 12 transactions involve the following counterparties: ConAgra Energy Services, Inc.; Entergy Power Marketing Corp.; Griffin Energy Marketing, L.L.C.; Midcon Power Services Corp.; North American Energy Conservation, Inc.; British Columbia Power Exchange Corp.; Coral Power, L.L.C.; Enron Power Marketing, Inc.; New Energy Ventures, L.L.C.; New York State Electric & Gas Corp./NGE Generation Inc.; Southern Company Energy Marketing, L.P.; and Washington Water Power Comрany. See Final Brief of Petitioner at 20-23. The five transactions that we have no jurisdiction to review involve Cook Inlet Energy Supply, L.P.; El Paso Energy Marketing Co.; South Jersey Energy Co.; PG&E Energy Trading-Power, L.P.; and Vital Gas & Electric LLC.
. The Commission granted each of these 11 power marketers authority to sell power at market-based rates and required only the filing of quarterly reports.
See Griffin Energy Mktg., L.L.C.,
81 F.E.R.C. ¶ 61,133,
. We have framed the inquiry as follows: “(1) whether the particular case is onе of first impression, (2) whether the new rule represents an abrupt departure from well established practice or merely attempts to fill a void in an unsettled area of the law, (3) the extent to which the party against whom the new rule is applied relied on the former rule. (4) the degree of the burden which a retroactive order imposes on a party, and (5) the statutory interest in applying a new rule despite the reliance of a party on the old standard.”
Williams,
