CAR-ADIPIC CAR U.S. Adipic Acid Production Protocol
CAR-ADIPIC is a chemical processes methodology used by 5 projects on Climate Action Reserve (CAR). Registry records show 23,310,762 tonnes issued and 42% of them retired.
Key figures
Projects
5
Countries
2
Credits issued
23,310,762 t
Credits retired
9,794,031 t
Retired share of issued
42%
Projects yet to issue
80%
Source: Berkeley Voluntary Registry Offsets Database, as used by the Methodology Lab · Data as of June 2026
ICVCM status
No ICVCM decision on this methodology yet.
The CCP label is applied to credits by the registry, issuance by issuance. An approved methodology means credits from projects using it can be eligible; it does not mean every credit carries the label.
CORSIA programme relevance
Whether the programmes this methodology is used on are approved by ICAO. Programme level only; unit eligibility depends on dates, authorisation and each programme's exclusions.
- Climate Action Reserve (CAR) 2024 to 2026: approved · 2027 to 2029: not approved
Where it is used
- China 3 projects
- United States 2 projects
Source: Registry records · Data as of 1 June 2026
Issuance by vintage
| Vintage | Issued (tCO₂e) |
|---|---|
| 2026 | 969,622 |
| 2025 | 5,076,930 |
| 2024 | 5,778,413 |
| 2023 | 4,993,130 |
| 2022 | 4,399,846 |
| 2021 | 2,092,821 |
Source: Berkeley Voluntary Registry Offsets Database · Data as of June 2026
Projects using CAR-ADIPIC
5 project pages in the CRBN.credit database, largest issuance first.
Phlogiston Phase I
Climate Action Reserve (CAR) · United States · Ghg Management
22.3M
issued tCO₂e
Invista Victoria AAP-VNOX Unit
Climate Action Reserve (CAR) · United States · Ghg Management
No issuance recorded
N2O Super Pollutant Abatement - Haoyuan AAP - Line 1
Climate Action Reserve (CAR) · China · Ghg Management
Not yet issued
N2O Super Pollutant Abatement - Shenma AAP - Lines 3-4
Climate Action Reserve (CAR) · China · Ghg Management
Not yet issued
N2O Super Pollutant Abatement - Zhonghao AAP Line 1
Climate Action Reserve (CAR) · China · Ghg Management
Not yet issued
Related methodologies
Same scope, with a more favourable ICVCM decision.
- ARB Compliance Offset Protocol: Destruction of U.S. Ozone Depleting Substances Banks 107 projects · CCP-Approved
- ACR Destruction of Ozone Depleting Substances and High-GWP Foam 11 projects · CCP-Approved
- ACR Certified Reclaimed HFC Refrigerants, Propellants, and Fire Suppressants 32 projects · Under assessment, no decision published
- ACR Transition to Advanced Formulation Blowing Agents in Foam Manufacturing and Use 5 projects · Under assessment, no decision published
- CAR U.S. Nitric Acid Production Protocol 11 projects · Withdrawn from assessment
- AM0034 Catalytic reduction of N2O inside the ammonia burner of nitric acid plants 4 projects · Very unlikely to meet the Core Carbon Principles
Questions about CAR-ADIPIC
How many projects use CAR-ADIPIC?
5 projects, in 2 countries, as of June 2026.
Is CAR-ADIPIC approved by the ICVCM?
No ICVCM decision on this methodology yet.
How much of the credits issued under CAR-ADIPIC have been retired?
42%, or 9,794,031 of 23,310,762 tonnes.