NRG Power Marketing v. FERC, No. 23-1984 (3d Cir. 2024)
Annotate this CaseA group of power providers contested orders from the Federal Energy Regulatory Commission (FERC) that permitted a new auction rule to retroactively apply to a pending auction. The petitioners argued that this violated the filed rate doctrine, which forbids retroactive rates. The auction, administered by the PJM Interconnection LLC (PJM), aimed to ensure reliable electric supply at competitive prices. PJM halted the auction, seeking FERC's permission to amend certain auction parameters it had already posted, which, if left uncorrected, might have led to a high clearing price for a specific region. FERC approved the amendment and allowed it to apply to the halted auction, which the petitioners challenged. The United States Court of Appeals for the Third Circuit agreed with the petitioners, stating that the amendment was retroactive as it altered the legal consequence attached to PJM's past action in the auction. The court granted the petitions and vacated the portion of FERC's orders that allowed the amendment to apply to the auction in question.
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