The battle over MISO transmission owners’ return on equity continued with the D.C. Circuit Court of Appeals vacating FERC’s order setting the rate at 10.02%.

FERC failed to consider the impact of potential rate increases when it allowed LG&E/KU to partially exit market power mitigation, the D.C. Circuit ruled.

FERC acted reasonably in rejecting a Wabash Valley Power contract and denying it a Mobile-Sierra presumption, the D.C. Circuit Court of Appeals ruled.

The D.C. Circuit backed FERC’s 2020 rejection of PSCo's 'fast track' interconnection rule — but the utility later won commission OK for a modified plan.

The D.C. Circuit Court of Appeals endorsed FERC over Entergy Arkansas in a disagreement over MISO’s cost allocation for interregional transmission projects.

More than three dozen states have taken sides in a court fight over the EPA's reinstatement of California's strict tailpipe emissions standards.

An appellate court ruled that ISO New England’s Inventoried Energy Program would unfairly incent some resources for storing energy in a way they already do. 

FERC reversed a decision that allowed CAISO to include an adder in the formula for offers that exceed the soft cap for its capacity procurement mechanism.

The D.C. Circuit Court sided with FERC over its finding that ISO-NE complied with Order 1000’s provisions on competitive bidding for transmission projects.

The D.C. Circuit Court ruled that FERC had failed to account for the downstream the greenhouse gas emissions of a compressor station in Agawam, Mass.