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Re-assessment pendingCARNitric Acid N2O- Secondary CatalystUSRegistry: Crediting endedCAR-US-NITRIC-ACID

Terra Verdigris #2

Developer: Terra Nitrogen, Limited Partnership

CAR-766 ↗

Worked comparison example (English)

#577of 1789 in United States#362of 1012 in Climate Action Reserve (CAR)#7of 10 in CAR-US-NITRIC-ACID

Score from methodology v2.1 (analysis of 20 Sep 2026). Re-assessment under v2.2 pending.

Crediting ended

The crediting period has ended. Credits already issued exist; no new ones will be issued unless the crediting period is renewed.

Climate Action Reserve: “Completed”

Assessment

CarbonMeld document-based assessment

01020304 Overall 5.3 / 10
Integrity 🔒 Transparency 🔒 Claim Safety 🔒 Documentation 🔒
Dimension scores are locked — the faint arcs are empty tracks, not zero scores.

Scale 0–10 · method weights: integrity 35% · transparency 25% · claim safety 25% · documentation 15%.

Re-assessment pending · v2.1

Scored2026-09-20medium confidenceLatest monitoring period ends: 2014-08-04

evidence: 35/35 registry documents analyzed · 4 red flags

Generated by CarbonMeld Analysis Pipeline · Methodology · Editorial Policy · About the System
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Analysis

Terra Verdigris #2 is a nitric-acid N2O secondary-catalyst project in Oklahoma with VVB-confirmed additionality and a measured project-specific baseline, but the record is undermined by a major discrepancy between the issuance document (zero ERR claimed) and the verification report (530,586 tCO₂e), an unexplained gap between two verification reports (530,586 vs 587,639), and the absence of any documented leakage treatment or ex-ante lifetime estimate. Minor monitoring nonconformities (linearity-check substitutions) were identified and resolved, but the overall data reliability is weakened.

Red Flags

4 red flags detected — Unlock with Premium

Findings

Risk Indicators

Additionality

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Permanence

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Leakage

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Baseline

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Safeguards

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Double-claim

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Risk indicator details are a Premium feature

Score Breakdown

Score factors per dimension are a Premium feature — Unlock with Premium

Detailed Analysis

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Evidence

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On this page: the analysis of 20 Sep 2026, marked “Re-assessment pending”. Per-dimension scores, risk indicators, 4 red flags, score factors, detailed analysis, and 35 registry documents (35 analyzed).

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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

  • Integrity label (ICVCM CCP)

    Methodology under ICVCM assessmentCAR U.S. Nitric Acid Production Protocol

    The Integrity Council has not decided on this methodology yet.

    Source: ICVCM assessment

  • Removal or reduction

    Not determined

    The registry data do not say whether these credits are removals or reductions.

  • 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

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.

Registry labels last checked:2026-10-11

Credit Vintages

IssuedRetiredAvailable
2008
106,064106,0640
2009
383,505383,5050
2010
678,634678,289345
2011
760,598664,79995,799
2012
768,045768,0450
2013
394,119394,1190
Total3,090,9652,994,82196,144

Retired by

Organisations named as beneficiaries in the registry's public retirement records.

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Profile & governance

Analysis ProvenanceNitric Acid Production Project Protocol
Methodology·Editorial Policy·About the System

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