The D.C. Circuit overruled FERC in cases brought by San Francisco against the commission and PG&E, which the city said refused to provide required service.

The D.C. Circuit said a PPA between Duke Energy and 32 municipal utility customers allows the munis to use storage to reduce their capacity charges.

DOE must provide better justification for its energy efficiency standards on commercial boilers, the D.C. Circuit Court of Appeals ruled.

Reversing FERC, the D.C. Circuit ruled that developers of the abandoned PATH transmission line must refund $6 million spent to influence public officials.

The D.C. Circuit Court of Appeals said FERC erred in basing its decision on CAISO capacity procurement payments on a prior ruling.

The Supreme Court agreed to consider challenges to EPA’s authority to regulate greenhouse gas emissions under the Section 111(d) of the Clean Air Act.

The D.C. Circuit backed FERC's reversal of a waiver over SPP transmission upgrade costs, even though it resulted in a “free pass” for some system users.

Louisiana and Mississippi joined MISO and its TOs in opposing LS Power’s campaign for regional cost sharing of transmission projects down to 100 kV.

The D.C. Circuit Court of Appeals rejected FERC's logic for approving a 10% cost adder in PJM's capacity market.

An appellate court rejected FERC's approval of a natural gas pipeline, saying the commission ignored its own rules on determining the need for the facility.