PJM Power Providers Group v. Federal Energy Regulatory Commission, No. 23-1778 (3d Cir. 2024)
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In this case, a group of energy providers and their trade associations challenged orders by the Federal Energy Regulatory Commission (FERC), which permitted a new auction rule to be applied retroactively to a pending auction. The auction was run by PJM Interconnection L.L.C., an entity that administers capacity auctions to ensure a reliable electric supply at competitive prices. PJM had applied the new rule to determine the auction results, but the petitioners argued that FERC's orders violated the filed rate doctrine, which forbids retroactive rates.
The Third Circuit Court of Appeals sided with the petitioners. It found that the new auction rule, which allowed for an adjustment to the Locational Deliverability Area (LDA) Reliability Requirement (a key parameter in the auction process) after it had been calculated and posted, was retroactive. This was because it altered the legal consequence attached to a past action, in violation of the filed rate doctrine. The court ruled that FERC's orders were arbitrary and capricious and not in accordance with the law, and therefore vacated the portion of FERC's orders that allowed PJM to apply the new rule to the 2024/25 capacity auction.
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