The Ninth Circuit, 2-1, affirmed summary judgment for the South Coast Air Quality Management District in a challenge to the district's 2022 rule phasing in zero nitrogen oxide (NOx) emission…

The Second Circuit affirmed two district court rulings in challenges to laws enacted in New York City and New York State that effectively prohibit use of fossil fuel-powered appliances in new…

A district court denied in part the U.S. government's motion to dismiss a challenge to DOI actions issued in accordance with executive branch actions concerning wind and solar energy projects…

A district court granted in part and denied in part a motion to preliminarily enjoin construction of a transmission line in Nebraska. Environmental groups, an Indian tribe, and companies …

A district court granted renewable energy groups' motion for preliminary injunction in a challenge to five DOI actions issued in response to executive branch actions concerning wind and solar…

A district court granted the Maryland Department of the Environment's (MDOE's) motion to dismiss a challenge to its building energy performance standards that set greenhouse gas emissions targets…

A district court denied trade groups', companies', and unions' motion for summary judgment in a challenge to the District of Columbia's 2022 law banning the use of gas appliances in certain newly…

A district court denied trade groups' motion for summary judgment in a challenge to a Maryland county's ordinance banning the use of gas appliances in new buildings. The groups argued the Energy…

A district court largely denied nonprofit groups' and historic property owners' motions for summary judgment in a challenge to BOEM's award of a lease for construction of a wind energy facility…

A district court granted in part and denied in part 15 states' and homebuilders' motion for summary judgment in a challenge to HUD's and USDA's 2024 determination that heightened energy efficiency…