California, Washington, Quebec Publish Draft Agreement on Carbon Markets

California and Washington state released a draft agreement outlining how their carbon emissions trading programs could be linked.

CARB Approves Regulations Implementing California’s Emissions Reporting Laws

The California Air Resources Board (CARB) voted on February 26, 2026 to approve regulations implementing California’s landmark corporate climate disclosure laws, establishing compliance timelines and administrative rules for companies subject to the requirements.

Bill Would Expand CARB Authority over Indirect Emissions Sources

California Assemblymember Robert Garcia introduced legislation to expand the state’s authority to regulate greenhouse gas (GHG) emissions.

CARB Proposes Amendments to California’s Cap-and-Trade Rules

In January 2026, the California Air Resources Board (CARB) issued a set of proposed regulatory amendments to the rules governing California’s greenhouse gas trading program, now referred to as Cap-and-Invest.

CARB Issues Proposed Climate Reporting Rules

Draft rules are a milestone in climate reporting.

Appeals Court Halts California Climate Risk Law

A federal appeals court granted an injunction against one of California’s climate reporting laws.

Business Groups Petition U.S. Supreme Court to Pause California Climate Law

The U.S. Chamber of Commerce and other industry groups filed an emergency appeal, requesting the U.S. Supreme Court to put California’s climate reporting laws on hold while legal challenges continue.

Newsom Reaffirms California Climate Leadership at Brazil COP

California Governor Gavin Newsom reassured international governments and business leaders that California would remain a “reliable, consistent, and ambitious” partner on climate action.

ExxonMobil Challenges California Climate Reporting Laws on Speech Grounds

ExxonMobil is challenging California’s greenhouse gas (GHG) emissions reporting laws as a violation of the company’s right to free speech.

Viewpoint: California Must Consider Emissions from Foreign Oil

CARB Publishes Preliminary List of Entities Subject to Climate Reporting

California and Kenya Join in Climate Partnership

California and Brazil Expand Climate Partnership

Newsom Signs Suite of Energy Bills Into Law

Energy package is seen largely as a compromise between the need to address rising energy costs, the reduction of greenhouse gas emissions, and the continued need for fossil fuels.

Legislators Agree on Energy Bills Intended to Reduce Costs

U.S. District Judge Denies Injunction Against Climate Reporting Law

Clean Energy Groups Request California Policy Changes after Federal Tax Credit Cuts

California Joins in Lawsuit over Trump’s “National Energy Emergency”

Newsom and Legislative Leaders to Seek Extension of Cap-and-Trade Program

Trump Blocks Enforcement of State-Level Climate Regulations

Executive order is part of a strategy to increase domestic energy production.

Bill Would Regulate Emissions from “Indirect” Sources

Bills Would Hold Oil Companies Liable for Past Emissions

U.S. District Judge Dismisses Two Claims Against Climate Reporting Law

Bill to Hold Oil Companies Liable for Climate Disasters Introduced

ExxonMobil Sues California Attorney General for Defamation