• Public Hearing Date: May 28, 2026
• Deadline for Public Comment: May 4, 2026

California regulators are giving people more time to comment on major climate rules that affect how companies report pollution and pay for greenhouse gas emissions. These rules can impact energy prices, business costs, and state funding for climate programs. The extra time means lawmakers and the public have a better chance to review the changes before final decisions are made later in May.

How this could affect you:

• Prices you pay: These rules affect how companies pay for pollution. When costs go up for businesses (like fuel suppliers or utilities), some of that can show up in gas prices, electricity bills, and everyday goods.
• Air quality and health: The goal is to reduce greenhouse gas emissions and pollution, which can lead to cleaner air over time—especially important in places like Southern California.
• State funding: Money from this program helps fund things like public transit, wildfire prevention, and clean energy projects. That can affect your community directly.
• Local jobs and businesses: Some industries may face higher costs or new rules, which can affect hiring, wages, or prices by sector.
• Your voice (right now): The extended deadline means you still have time to submit comments and influence how these rules are finalized before the state makes a decision.

The California Air Resources Board (CARB) is extending the deadline for public comment to May 4, 2026, for the Notice of Public Availability of Modified Text and Availability of Additional Documents and/or Information (15-day Amendments) to the Proposed Amendments to the Regulation for the California Cap on Greenhouse Gas Emissions and Market-Based Compliance Mechanism (known as the Cap-and-Invest Regulation), in response to a joint request from the Chair of the Senate Environmental Quality Committee and the Chair of the Senate Budget Subcommittee No. 2 on Resources, Environmental Protection and Energy. CARB is also extending the comment period to May 4, 2026, for the Notice of Public Availability of Modified Text for the Proposed Amendments to the Regulation for the Mandatory Reporting of Greenhouse Gas Emissions (MRR), because the MRR and Cap-and-Invest Regulation are closely related. CARB plans to take the Proposed Amendments for both the Cap-and-Invest Regulation and MRR, which were first noticed on January 20, 2026, to its Board on May 28, 2026.

Notice of Comment Period Extension

The Attachments to the 15-Day Notice show the specific proposed modifications to the text of the proposed regulation. The Attachments, original Notice, Initial Statement of Reasons, and all subsequent regulatory documents are available on CARB’s Rulemaking webpage.

Inquiries concerning the substance of the proposed regulation may be directed to Mark Sippola, Branch Chief, Climate Change Program Evaluation Branch, at (279) 208-7918 or Rachel Gold, Supervisor, Program Development Section, at (279) 208-7516.

Written Comment Period & Comment Submittal

Written comments will only be accepted on the modifications identified in the 15-Day Notice. The public comment period for this regulatory action will begin on April 14, 2026. Written comments must be received no later than May 4, 2026, and addressed to the following:

Clerk of the Board, California Air Resources Board

1001 I Street, Sacramento, California 95814

Click here for Electronic Submittal

Please note that under the California Public Records Act (Government Code section 7921.000 et seq.), your written and oral comments, attachments, and associated contact information (e.g., your address, phone, email, etc.) become part of the public record and can be released to the public upon request.

Clearing California Skies for Over 50 Years

CARB is the lead agency for California’s fight against climate change and oversees all air pollution control efforts in the state to attain and maintain health-based air quality standards.

More Information: 

https://ww2.arb.ca.gov/applications/public-comments?utm_medium=email&utm_source=govdelivery