Mandatory GHG Assurance Is Coming — Start Preparing Now

Written By Jason Alviar

Beginning in 2026, California’s Climate Corporate Data Accountability Act (SB 253) will require limited third-party assurance of Scope 1 and 2 GHG emissions for companies with over $1 billion in annual revenue.

This guide outlines what you need to know now to stay ahead of compliance deadlines, including:

  • What SB 253 requires and when.

  • The step-by-step process for limited assurance.

  • Recommended timing and planning considerations.

  • Where to begin to avoid delays or added costs.

Download the guide to kickstart your SB 253 assurance prep.

Contributor Spotlight: Camille Fordy 

Camille Fordy is the Vice President and ESG Practice Lead at Summit Strategy Group, where she advises organizations on ESG strategy, reporting, and stakeholder engagement. With experience in government and a background in corporate sustainability, Camille helps clients navigate the complexities of sustainability in an evolving regulatory environment, delivering strategies that create long-term value and resilience. 

Jason Alviar
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