Credits

Project code

Approval date

Protocol details

Name

Version

CarbonZero.eco - Williams — Isometric

Under validationBiCRS

CarbonZero.eco - Williams

CarbonZero
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Project details

Expected first credits

2026

Project code

Z9PR

Crediting period

01 Jul 2026 to 31 Jul 2031

Protocol details

Current protocol version

Biochar Production and Storage v1.2

Baseline protocol version

Biochar Production and Storage v1.1

Public comment periodThis project is in a public comment period from 10 Mar 2026 until 09 Apr 2026. Please send feedback to project-feedback@isometric.com.

Summary

The Williams Biochar Facility in Colusa County converts almond shells from 300+ farms into 10,000 tonnes of biochar annually, generating ~20,000 carbon removal credits. Upon expansion, the project will scale up to over 108,000 carbon removal credits per year. Applied locally, the biochar boosts soil fertility, water retention, and crop yields while reducing fertilizer use, transport emissions, and locking carbon in a durable, circular system.

How carbon is being removed

Biomass Carbon Removal and Storage (BiCRS) involves storing the carbon contained in waste biomass—organic material from living or recently living organisms. BiCRS works by halting or slowing the decomposition of biomass, enabling the carbon it contains to be stored long-term. This can be achieved by converting biomass into materials that decompose more slowly—such as biochar or bio-oil—or by storing it in environments where decomposition is slowed. For BiCRS to count as carbon removal, the biomass must be replenished to ensure additional carbon dioxide is drawn from the atmosphere.

Learn more

Project timeline

Completed 01 Oct 2025
Completed 01 Oct 2025
Initial documentation submission
Expected 2026
Expected 2026
In progressAudit kick-off
A Validation & Verification Body (VVB) officially commences the project validation and verification process. All VVBs are approved and appointed by Isometric based on the requirements outlined in the Isometric Standard and VVB Policy.
Expected 2026
Expected 2026
Site visit
Expected 2026
Expected 2026
Approval date
Expected 2026
Expected 2026
Initial credit issuance

Credits

Protocol details

Summary

How carbon is being removed

Project timeline

Project documentation