The suit says New York's ban is preempted by federal law, seeking to apply the precedent from the Ninth Circuit's decision overturning Berkeley Calif.'s ban.

An appeals court sent DOE back to the drawing board on an efficiency rule for commercial boilers after complaints the agency failed to comply with the Administrative Procedure Act.

The city of Berkeley asked the 9th Circuit Court of Appeals for an en banc rehearing of a decision to overturn its nation-leading ban on natural gas hookups.

A court ruling voiding Berkeley's ban on natural gas in new buildings could have national impact, but it doesn’t prevent all efforts to electrify buildings.

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