Electric Power Supply Association v. FERC, No. 23-2559 (3d Cir. 2024)
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This case involved several petitioners challenging orders of the Federal Energy Regulatory Commission (FERC), which allowed a new auction rule to retroactively apply to an auction that was already underway. The auction was managed by PJM Interconnection L.L.C. (PJM), which ran the auction based on a tariff (filed rate) that set out specific procedures. The petitioners argued that FERC's orders violated the filed rate doctrine, which prohibits retroactive rates.
The United States Court of Appeals for the Third Circuit agreed with the petitioners. The court found that the new rule was retroactive because it altered the legal consequences attached to past actions. Specifically, the rule allowed PJM to use a different Locational Deliverability Area (LDA) Reliability Requirement than the one it had calculated and posted.
The court noted that, while FERC's orders were seemingly intended to prevent potential economic harm to consumers, the filed rate doctrine's emphasis on predictability and the necessity of adherence to approved rates were paramount. The court concluded that FERC's orders, by allowing a change to the rules of an auction already in progress, introduced unpredictability into the electricity market, potentially eroding market confidence.
Therefore, the court granted the petitions for review and vacated the portion of FERC's orders that allowed PJM to apply the new rule to the auction that was already underway. The court did not strike down the rule entirely, leaving open the possibility of it being applied to future auctions.
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