SB 253 compliance, handled

California's first Scope 1 and 2 emissions reports are due August 10, 2026. We get you there: expert-led carbon measurement, GHG Protocol aligned, built for assurance from day one.

Why Holtara

  1. Specialists, not just software: No platform to learn, no dashboards to configure. Our carbon and climate experts build your footprint, document every decision, and hand you a submission-ready result.
  2. Flexible by design: Need a one-time footprint to meet the deadline? Done. Want an ongoing climate partner afterwards? We scale with you. No annual licences, no product tiers, just the engagement you need.
  3. One vendor, one outcome: Measurement, methodology documentation, assurance preparation, and advisory, all in one relationship. No stitching together three providers to get to a compliant filing.
  4. Assurance-grade from the start: Every emission factor, data source, and assumption is documented to the standard that CARB reviewers and third-party assurers will hold you to. Our work doesn't just report numbers. It defends them

What SB 253 requires

  • The Climate Corporate Data Accountability Act applies to US entities doing business in California with over $1B in global revenue. Reporting must follow the Greenhouse Gas Protocol:
    • Scope 1: direct operational emissions
    • Scope 2: indirect emissions from purchased energy
    • Scope 3: value-chain emissions, required from 2027
  • Assurance phases in from 2027 (Scopes 1 and 2) and 2030 (Scope 3). Penalties for non-compliance can reach $500,000 per reporting year. CARB has signalled first-year enforcement discretion for good-faith efforts, but the deadline is firm and the bar for "credible" is high

What you'll get

  • Scope 1, 2, and 3 carbon footprint aligned with the GHG Protocol and CARB's reporting template
  • Complete methodology documentation, assumptions register, and data lineage
  • Submission-ready narrative and disclosures
  • Scope 3 category assessment, data sourcing strategy, and calculation approach

Talk to our team about what it takes to get your filing done right.

Speak to an SB 253 specialist

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