Preparing for SB 253: Building an Assurance-Ready GHG Inventory

Agendi and Atveris recently hosted a practical webinar exploring how companies can prepare for California’s SB 253 requirements for 2027 and beyond, with a focus on greenhouse gas (GHG) inventory assurance readiness.

As climate disclosure requirements evolve, organizations must look beyond emissions calculations to ensure their GHG inventories, supporting documentation, data controls and internal processes are robust, transparent and ready for third-party assurance.

During the session, Agendi shared practical guidance on developing assurance-ready GHG inventories, while Atveris provided insights into the third-party assurance process and how organizations can prepare for an efficient and effective review.

The webinar covered:

• Best practices for building a robust, transparent and assurance-ready GHG inventory
• Practical advice for strengthening emissions data management and internal controls
• An overview of the third-party assurance process and what companies can expect
• How teams can prepare for an efficient assurance engagement.

Who was this webinar for?

The session was designed for corporate decision-makers, managers and practitioners involved in sustainability and climate-related reporting, including professionals across sustainability/ESG, finance, risk, strategy, legal and investor relations.

More questions? Contact us at california@agendi.co or helena@atveris.com