October 30, 2025

CARB SB 253 & SB 261 NPRM:

An In-Depth Look at California’s New Climate Rules

About The Webinar

California’s landmark climate disclosure laws, SB 253 and SB 261, have reached a pivotal stage following the California Air Resources Board’s (CARB) release of its Notice of Proposed Rulemaking (NPRM) on October 14, 2025. This session unpacks what the NPRM means for companies preparing for compliance — from reporting timelines and assurance requirements to practical strategies for building readiness. Watch the webinar to hear insights from Asuene Inc., recognized as TIME Top 100 GreenTech and U.S. #1 in Carbon Accounting, as the speaker shares how organizations can navigate these new regulations and turn climate disclosure into a strategic advantage.

What You'll Learn

The official timeline from NPRM release through CARB’s final vote in December 2025 and the first reporting cycle in 2026.

Which companies must comply with SB 253 and SB 261, and how “doing business in California” may be defined.

Reporting expectations, including Scope 1 and 2 greenhouse gas disclosures, Scope 3 phase-in, and third-party assurance.

Key cost considerations such as annual administrative fees for each program.

Hot issues under debate—definitions, interoperability with SEC and EU CSRD rules, and enforcement.

Steps to take now to meet 2026 reporting deadlines, from data systems and risk analysis to third-party assurance planning.

Explore Asuene

If you’d like to explore how Asuene’s solutions can help you drive cost savings and carbon reduction, we invite you to learn more about our platform. Discover how we support organizations like yours in turning sustainability into strategic ROI.


© Asuene Inc. 2025

CARB SB 253 & SB 261 NPRM:

An In-Depth Look at California’s New Climate Rules

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