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Retroactive legal changes

Affirmed Energy v. Federal Energy Regulatory Commission

Updated Nov 12, 2026

In brief

Where it stands
Petition Pending

Awaiting an order on the petition

No decision timeline until the Court agrees to hear the case.

What it’s about
Affirmed Energy challenges FERC’s approval of a change to rules for wholesale energy-capacity auctions, arguing that it took away an entitlement earned under earlier rules. The D.C.
What's at stake
The D.C. Circuit's ruling that FERC's change was not retroactive remains the latest result in Affirmed Energy's challenge.

Summary: written with AI from the case record.

What it's about

Circuit ruled that the change was not retroactive, and Affirmed Energy has asked the Supreme Court to review that ruling.

Affirmed Energy's petition asks whether a rule change is retroactive if it removes an entitlement earned through a past act but usable only in the future.

Question presented

Whether, as the Third Circuit held, a legal change is retroactive if it eliminates an entitlement acquired under prior law through a completed past act, even if the entitlement would have been exercised only in the future, or whether, as the D.C. Circuit held, a legal change is retroactive only if it alters the past legal consequences of the completed act.

What happens next

The next step is for the Court to decide whether to hear the petition. No oral argument or decision date is scheduled.

Documents

1

Docket activity

12
  • New analysis added

    Nov 12, 2026 · Court records

  • AI analysis generated: Case Briefing

    Nov 12, 2026 · Generated

  • Case data updated: summary, question_presented, generation_metadata

    Nov 12, 2026 · Court records

  • Case data updated: question_presented, extraction_metadata

    Nov 12, 2026 · Court records

  • New document added

    Oct 19, 2026 · supremecourt.gov

Show 7 more
  • Case data updated: documents, description, document_url, proceeding_type

    Oct 15, 2026 · supremecourt.gov

  • New document added

    Oct 13, 2026 · supremecourt.gov

  • Case data updated: documents, description, document_url, proceeding_type

    Oct 9, 2026 · supremecourt.gov

  • Case data updated: documents, description, document_url, proceeding_type

    Sep 18, 2026 · supremecourt.gov

  • Brief added: Petition

    Sep 18, 2026 · Court records

  • New document added

    Jul 24, 2026 · supremecourt.gov

  • Case data updated: documents, description, document_url, proceeding_type

    Jul 21, 2026 · supremecourt.gov

Sources

Primary materials from the Court and the parties. Grounded in docket records and cited sources. Official filings and opinions remain authoritative.

Checked Nov 12, 2026Methodology

Court records and filings