Absolute Carbon Standard (ACS)

Absolute Carbon Standard v2.1.pdf

Absolute Carbon Standard FAQs.pdf

ACS Update Materials

Absolute Carbon Standard Update Process v2.pdf

March 2026 ACS Public Consultation Comment Responses.pdf

December 2025 ACS Public Consultation Comment Responses.pdf

Modules and Methodologies

Direct Air Capture and Storage Methodology v1.0.pdf

<aside> 🎤

Public Consultation

We’re seeking feedback on a methodology for Biomass Injection with Geologic Storage:

[PUBLIC CONSULTATION] Biomass Injection with Geologic Storage v1.0.pdf

Additional Standards and Policies

Validation and Verification Standard v1.5.pdf

Conflict of Interest Policy v1.0.pdf

Policy on Certificate Designation for CORSIA Eligibility v1.1.pdf

Deprecated Documentation