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.”

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

EPA Administrator Michael Regan is confident the electric power sector will continue cutting GHG emissions despite a challenge to the agency’s authority.

The Supreme Court’s liberals defended EPA’s power to issue “beyond-the-fence-line” rules on power plants in a challenge by the coal industry and 20 states.

The Biden administration could be close to restoring California’s authority to adopt tailpipe emission standards that are more stringent than federal standards.

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.