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CarbonMeld CarbonMeld Carbon Observatory

Rated

WMMC2

Standard
ACR
Methodology
ARB-MMC (California Air Resources Board)
Registry
ACR-545 ↗ · Registered
Country
COLORADO, US
Credit type
Coal Mine Methane

CarbonMeld's document-based rating gives WMMC2 (ACR-545) 5.2 out of 10 (Moderate rating) under CarbonMeld methodology v3, documents read on 8 Nov 2026. The analysis read 5 of the 5 registry documents. It is CarbonMeld's own assessment, not a rating given by the registry or the standard.

Assessment

Document-based rating

5.2/10

Moderate rating (5.0 to 6.4)

Evidence coverage: high

How solid the credit is, as far as the registry's public documents show. 5.0 is the neutral point, where no public source says good or bad.

Methodology v3 · documents read on 8 Nov 2026

Starting point

  • Additionality: neutral (5.0) — no public grade of this type of project is used
  • Quantification: neutral (5.0) — no public grade of this type of project is used
  • Claim safety: neutral (5.0) — no public grade of this type of project is used

Not counted in the number

  • The oldest vintage still on sale, the content of the safeguards and the verifier's quality: not among the facts read

How this analysis was made

Our method
CarbonMeld methodology v3 · documents read on 8 Nov 2026 · 5/5 registry documents read

Analysis

WMMC2 (COLORADO, US) captures and destroys methane from U.S. coal or trona mines that would otherwise be released under Compliance Offset Protocol Mine Methane Capture Projects; registry status Registered (ACR), 57,887 credits issued (vintages 2024–2025). The documents name First Environment of California, Inc as validation / verification body. The latest verification read (2024-07-01 – 2025-06-30) verifies 37,914 tCO2e (read from a scanned page (OCR)). Monitoring and verification documents are in the record.

Eligibility & market

What can you claim with this credit?

Four checks buyers ask about, from the registry and the Integrity Council (ICVCM).

  • Airlines (CORSIA)

    No CORSIA label on the registry

    Not usable for airlines' CORSIA obligations.

    Source: registry label · read on 8 Nov 2026

    Covers: this project's credit records as read on the registry

  • Integrity label (ICVCM CCP)

    Methodology under ICVCM assessmentACR Capturing and Destroying Methane from Coal

    The Integrity Council has not decided on this methodology yet.

    Source: ICVCM assessment · ICVCM table read on 4 Nov 2026

    Covers: the methodology (every project using it), not this project's credits

  • Removal or reduction

    Emission reduction or avoidance

    Prevents or reduces emissions — fits contribution claims, not SBTi neutralisation.

    Source: project sector

    Covers: the project type, not a label on individual credits

  • Paris Agreement (Article 6)

    No Article 6 authorization

    No corresponding adjustment: the host country can also count this reduction towards its own target.

    Source: registry label · read on 8 Nov 2026

    Covers: this project's credit records as read on the registry

Information only, from public sources. Claim rules (CORSIA, SBTi, EU rules on green claims) change: check them before making a public claim. Since 27 September 2026, EU consumer rules do not allow “climate neutral” product claims based on offsets.

Credit VintagesExhausted

IssuedRetiredAvailable
2024
19,97300
2025
37,91400
Total57,88700

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Cite this page

CarbonMeld (2026). WMMC2 (ACR-545): CarbonMeld document-based rating, methodology v3, documents read on 8 Nov 2026. https://carbonmeld.com/projects/wmmc2/.

The citation names the rating by its methodology version and the day the documents were read.

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Same methodology or sector, the same registry first.