The D.C. Circuit threw out a challenge from the Midwest Ozone Group to EPA's Cross-State Air Pollution Rule.

EPA reaffirmed the legal basis for its MATS rule, but there will be no immediate impact, as the 519 plants affected are already in compliance.

House members squared off over a set of proposals from the new GOP majority to lessen environmental and other regulatory barriers to domestic energy production.

The Supreme Court’s ruling on EPA's regulation of GHG emissions will chill agency rulemakings but won't cripple regulation, attorneys told an EBA forum.

Carbon dioxide emissions by the 100 largest U.S. electric power producers increased 7% from 2020 to 2021, Ceres reported in its annual benchmarking analysis.

Oregon regulators are racing to adopt by year-end a California rule requiring all new cars sold in the state to be zero-emission or plug-in hybrid by 2035.

Exelon said the proposed 15% minimum corporate income tax in the Democrats’ energy and climate bill could impinge its cash flow, slow infrastructure investment.

California regulators are awaiting approval from the EPA for a rule that would require an increasing percentage of trucks sold in the state to be zero emission.

A panel of legal experts said the Supreme Court decision in West Virginia v. EPA could place constraints on congressional efforts to address climate change.

The Supreme Court ruled that EPA lacks authority to compel generation shifting to reduce CO2 emissions, citing a lack of “clear congressional authorization.”