Breathe Zero took the anxiety out of SB 253 compliance. Their platform is intuitive, powerful, and made our first report a breeze. We finally feel ahead of the curve.
How it works
Gather Your Data
Upload data or connect your systems with minimal manual effort.
Measure Automatically
Instantly calculate Scope 1, 2, and 3 emissions with methodology transparency.
Review for Accuracy
Use AI to detect anomalies and validate your results through audit-ready workflows.
Analyze & Report
Drill into facility-level and value chain data. Export disclosures aligned to SB 253.
Explore Related Resources
Get up to speed on California’s new climate disclosure laws
The SB253 Solution
Breathe Zero simplifies your SB 253 reporting. Our platform automates your data processes. It ensures complete accuracy and efficiency.
Full Emissions Coverage
We support Scope 1, 2, and 3.
AI-Powered Validation
Automated data error detection.
Audit-Ready Reports
Compliant reports with ease.
Expert Climate Support
Our experts guide your journey.
What you need to know.
US entity (public and private)
doing business in California, regardless of headquarters location
Companies with over $1B
in total annual revenue
2026
Scope 1 and 2 emissions disclosures (for 2025 data); Limited assurance over scopes 1 and 2
*Proposed deadline: June 30, 20262027
Scope 3 disclosures (for 2026 data)
2030
Reasonable assurance over Scopes 1 and 2 emissions disclosures and limited assurance over Scope 3 emissions disclosures
Scope 1
Direct GHG emissions from owned or controlled sources
Scope 2
Indirect emissions from purchased electricity and energy
Scope 3
All other indirect emissions across the value chain
Third-Party Assurance
Limited assurance for Scopes 1 and 2 by 2026; reasonable assurance by 2030.
Limited assurance for Scope 3 emissions by 2030.
The Challenges of SB 253
Compliance presents significant business hurdles. The law mandates detailed emissions disclosures. This includes Scope 1, 2, and 3. Data collection is complex and time-consuming. Third-party assurance is now mandatory. Your data must always be audit-ready. Deadlines are approaching very quickly.
