Nitrous oxide (N2O) Abatement in Adipic Acid Production
HCutting nitrous oxide emissions from adipic acid production using advanced abatement technologies for significant climate impact
What’s the challenge?
Adipic acid is an organic compound primarily used in the production of nylon, foams, safety airbags, coatings, adhesives, and food additives. The production of adipic acid is a significant concern for climate change because it releases nitrous oxide (N2O) as a byproduct.
Nitrous oxide is a greenhouse gas with a warming potential of up to 298 times that of carbon dioxide. Besides being a potent greenhouse gas, nitrous oxide is also the leading ongoing source for the depletion of the ozone layer.
The current annual production of adipic acid is estimated at 2.5 million metric tonnes. Although the growth of adipic acid production has slowed in some instances, it has still risen by 10% overall since 1990, and in some instances, continuing to grow. This presents a major concern for climate change mitigation efforts.
How do adipic acid abatement methodologies work?
Adipic acid abatement involves the installation of technologies that prevent nitrous oxide gas from being vented into the atmosphere during the production of adipic acid. The Integrity Council has assessed the following methodologies for abating the nitrous oxide emissions:
- N2O Abatement in Adipic Acid – This methodology under the Clean Development Mechanism was established in 2005 and refers to a methodology applicable to projects in which nitrous oxide from acid production plants is decomposed through catalytic or thermal processes. Emissions are abated through the installation of facilities that convert nitrous oxide into nitrogen, thereby preventing its release into the atmosphere.
- Adipic Acid Production Protocol – The abatement of nitrous oxide emissions is sometimes deprioritised by adipic acid plants in favour of addressing other harmful pollutants which are subject to more stringent regulations. The Adipic Acid Production Protocol aims to motivate adipic acid plants to focus on cutting N2O emissions by offering incentives through carbon markets. This methodology covers both the adoption of new N2O reduction technologies and the improvement of existing systems, leading to an overall decrease in N2O emissions released into the atmosphere. Note that this protocol does not apply to adipic acid plants built after 30 September 2020.
- Adipic Acid Production Protocol v1 – This protocol was established in October 2023 and it provides information on how to quantify, monitor, report, and verify nitrous oxide emissions reductions at facilities that produce adipic acid by implementing abatement technologies. The Protocol is designed to incentivise the installation and use of N2O emission control technology to reduce N2O emissions. The protocol mandates a minimum 90% abatement efficiency in the baseline for all adipic acid projects.
Co-benefits of these methodologies
Adipic acid abatement programs offer co-benefits beyond climate mitigation and reduction of carbon dioxide in the atmosphere.
- Protection of the ozone layer, as nitrous oxide is a major ozone-depleting substance. A healthier ozone layer decreases harmful ultraviolet radiation reaching the Earth’s surface.
- Air quality improvement by potentially reducing the emissions of other pollutants associated with industrial processes, such as volatile compounds and nitrous oxides.
- Economic co-benefits due to the implementation of abatement technologies that can lead to long-term cost savings through improved process efficiencies.
- Market opportunities that open with cleaner production processes, especially in regions with stringent environmental regulations or a high demand for green products.
- Increased workplace safety by reducing the risk of exposure to harmful substances.
High-Integrity, CCP-Approved adipic acid methodologies
| Category | Program | Methodology and Version(s) | Assessment Type | Assessment in progress | Preparing draft report and recommendation | Scheduled for Governing Board Consideration | Decision & Informal Board Observations |
|---|---|---|---|---|---|---|---|
| Afforestation, Reforestation and Revegetation | ACR | ACR Afforestation and Reforestation of Degraded Lands, v 1.0-1.2 | MSWG 2 |  | | | CCP-Approved Board Observations |
| Afforestation, Reforestation and Revegetation | ERS | M001 Quantification Methodology for Terrestrial Forest Restoration, v 1.1-1.2 | Internal Assessment | | |||
| Afforestation, Reforestation and Revegetation | Gold Standard | GS Afforestation/Reforestation (A/R) GHG Emissions Reduction & Sequestration Methodology, v 2.1 | MSWG 2 | ||||
| Afforestation, Reforestation and Revegetation | Gold Standard | GS Sustainable Management of Mangroves, v 1.0 | Internal Assessment | | |||
| Afforestation, Reforestation and Revegetation | Isometric | Reforestation, v 1.0 | Internal Assessment | | | ||
| Afforestation, Reforestation and Revegetation | Verified Carbon Standard | VM0047 Afforestation, Reforestation, and Revegetation, v 1.0 | MSWG 2 | | | | CCP-Approved Board Observations |
| Afforestation, Reforestation and Revegetation | Verified Carbon Standard | VM0047 Afforestation, Reforestation, and Revegetation, v 1.1 | Internal Assessment | | |||
| Avoided Grassland Conversion | Climate Action Reserve (CAR) | CAR Canada Grassland, v 1.0 | MSWG 2, Withdrawn | ||||
| Avoided Grassland Conversion | Climate Action Reserve (CAR) | CAR U.S. Grassland Protocol, v 2.1 | MSWG 2, Withdrawn | ||||
| Biochar | Climate Action Reserve (CAR) | CAR U.S. and Canada Biochar, v 1.0 | MSWG 6 | | | | CCP-Approved Board Observations |
| Biochar | Isometric | Biochar Production and Storage, v 1.0 | MSWG 6 | | | | CCP-Approved Board Observations |
| Biochar | Isometric | Biochar Production and Storage, v 1.1 | Internal Assessment | ||||
| Biochar | Puro.earth | Biochar Methodology, v 3.0 | MSWG 6 | | |||
| Biochar | Verified Carbon Standard | VM0044 Methodology for Biochar Utilization in Soil and Non-Soil Applications, v 1.0-1.1 | MSWG 6, Withdrawn | ||||
| Biochar | Verified Carbon Standard | VM0044 Methodology for Biochar Utilization in Soil and Non-Soil Applications, v 1.2 | MSWG 6 | | | | CCP-Approved Board Observations |
| Biodigesters (household) | Gold Standard | AMS-I.E. - Switch from non-renewable biomass for thermal applications by the user, v 1.0-13.0 | MSWG 5 | | | | Does not meet Board Observations |
| Biodigesters (household) | Gold Standard | AMS-I.I. - Biogas/biomass thermal applications for households/small users, v 1.0-6.0 | MSWG 5 | | | | Does not meet Board Observations |
| Biodigesters (household) | Gold Standard | GS Methodology for Animal Manure Management and Biogas Use for Thermal Energy Generation, v 1.0-1.1 | MSWG 5 | | | | CCP-Approved Board Observations |
| Biodigesters (household) | Verified Carbon Standard | AMS-I.E. - Switch from non-renewable biomass for thermal applications by the user, v 1.0-13.0 | MSWG 5 | | | | Does not meet Board Observations |
| Carbon Dioxide Removals | Gold Standard | GS Carbon mineralisation using reactive mineral waste, v 2.0 | MSWG 6 | ||||
| Carbon Dioxide Removals | Gold Standard | GS Carbon Sequestration Through Accelerated Carbonation Of Concrete Aggregate , v 1.0 | MSWG 6 | | | | |
| Carbon Dioxide Removals | Gold Standard | GS Methodology for Biomass Fermentation with Carbon Capture and Geologic Storage, v 1.0 | MSWG 6 | | | ||
| Carbon Dioxide Removals | Isometric | Bio-oil Geological Storage, v 1.0-1.1 | MSWG 6 | | | | |
| Carbon Dioxide Removals | Isometric | Biogenic Carbon Capture and Storage, v 1.0 | MSWG 6, Withdrawn | ||||
| Carbon Dioxide Removals | Isometric | Biogenic Carbon Capture and Storage, v 1.1 | MSWG 6 | | | | |
| Carbon Dioxide Removals | Isometric | Biomass Geological Storage, v 1.0-1.1 | MSWG 6 | | | | |
| Carbon Dioxide Removals | Isometric | Direct Air Capture, v 1.0 | MSWG 6, Withdrawn | ||||
| Carbon Dioxide Removals | Isometric | Direct Air Capture, v 1.1 | MSWG 6 | | | | |
| Carbon Dioxide Removals | Isometric | Subsurface Biomass Carbon Removal and Storage, v 1.0 | MSWG 6 | | | | |
| Carbon Dioxide Removals | Puro.earth | Carbonated Materials, v 2.0 | MSWG 6 | | |||
| Carbon Dioxide Removals | Puro.earth | Geologically Stored Carbon, v 1.0 | MSWG 6 | | |||
| Carbon Dioxide Removals | Puro.earth | Terrestrial Storage of Biomass, v 1.0 | MSWG 6 | | |||
| Carbon Dioxide Removals | Verified Carbon Standard | VM0049 Carbon Capture and Storage, v 1.0 | MSWG 6 | | |||
| Efficient Cookstoves | Gold Standard | AMS-II.G. - Energy efficiency measures in thermal applications of non-renewable biomass, v 1-13.1 | MSWG 5 | | | | Does not meet Board Observations |
| Efficient Cookstoves | Gold Standard | GS Emission Reductions from Safe Drinking Water Supply, v 1.0 | Internal Assessment | | |||
| Efficient Cookstoves | Gold Standard | GS Methodology for Metered & Measured Energy Cooking Devices, v 1.0-1.2 | MSWG 5 | | | | CCP-Approved Board Observations |
| Efficient Cookstoves | Gold Standard | GS The Gold Standard Simplified Methodology For Clean And Efficient Cookstoves, v 1.0-3.0 | MSWG 5 | | | | Does not meet Board Observations |
| Efficient Cookstoves | Gold Standard | GS TPDDTEC – Technologies and Practices to Displace Decentralized Thermal Energy Consumption, v 2.0-3.1 | MSWG 5 | | | | CCP-Approved Board Observations |
| Efficient Cookstoves | Gold Standard | GS TPDDTEC – Technologies and Practices to Displace Decentralized Thermal Energy Consumption, v 4.0 | MSWG 5 | | | | CCP-Approved Board Observations |
| Efficient Cookstoves | Verified Carbon Standard | VM0050 Energy Efficiency and Fuel-Switch Measures in Cookstoves, v 1.0 | Internal Assessment | | | | CCP-Approved Board Observations |
| Efficient Cookstoves | Verified Carbon Standard | VMR0006 Energy Efficiency and Fuel Switch Measures in Thermal Applications, v 1.2 | MSWG 5, Withdrawn | ||||
| Enhanced Weathering | Isometric | Enhanced Weathering in Agriculture , v 1.0-1.1 | MSWG 6 | | | ||
| Enhanced Weathering | Puro.earth | Enhanced Rock Weathering Methodology, v 1.0 | MSWG 6 | | |||
| Enteric Methane | Gold Standard | GS Methane Emissions Reduction from Enteric Fermentation in Beef Cattle Through Application of Feed Supplements, v 1.0 | MSWG 2 | | | ||
| Enteric Methane | Verified Carbon Standard | VM0041 Methodology for the Reduction of Enteric Methane Emissions from Ruminants through the Use of Feed Ingredients, v 2.0 | MSWG 2 | | | ||
| HFC Displacement | ACR | ACR Certified Reclaimed HFC Refrigerants, Propellants, and Fire Suppressants, v 1.0-2.0 | Internal Assessment | | | ||
| HFC Replacement | ACR | ACR Advanced Refrigeration Systems, v 1.0-3.0 | Internal Assessment | | | ||
| HFC Replacement | ACR | ACR Transition to Advanced Formulation Blowing Agents in Foam Manufacturing and Use, v 1.0-3.0 | Internal Assessment | | |||
| HFC-23 destruction: HFC-23 abatement from HCFC-22 production | Verified Carbon Standard | AM0001 - Decomposition of fluoroform (HFC-23) waste streams , v 1.0-5.0 | Very Unlikely To Meet | ||||
| Improved Forestry Management | ACR | ACR Improved Forest Management (IFM) on Canadian Forestlands, v 1.0 | MSWG 1 | ||||
| Improved Forestry Management | ACR | ACR Improved Forest Management (IFM) on Non-Federal U.S. Forestlands, v 2.0 | MSWG 1 | | | | |
| Improved Forestry Management | ACR | ACR Improved Forest Management (IFM) on Non-Federal U.S. Forestlands, v 2.1 | MSWG 1 | | | | CCP-Approved Board Observations |
| Improved Forestry Management | ACR | ACR Improved Forest Management (IFM) on Small Non-Industrial Private Forestlands, v 1.0 | MSWG 1 | ||||
| Improved Forestry Management | Climate Action Reserve (CAR) | CAR Mexico Forest Protocol, v 2.0 | MSWG 1 | | |||
| Improved Forestry Management | Climate Action Reserve (CAR) | CAR Mexico Forest Protocol, v 3.0 | MSWG 1 | | | | CCP-Approved Board Observations |
| Improved Forestry Management | Climate Action Reserve (CAR) | CAR U.S. Forest Protocol, v 5.1 | MSWG 1 | ||||
| Improved Forestry Management | Verified Carbon Standard | VM0005 Methodology for Conversion of Low-Productive Forest to High-Productive Forest, v 1.2 | MSWG 1 | ||||
| Improved Forestry Management | Verified Carbon Standard | VM0012 Improved Forest Management in Temperate and Boreal Forests (LtPF), v 1.2 | MSWG 1 | ||||
| Improved Forestry Management | Verified Carbon Standard | VM0035 Methodology for Improved Forest Management through Reduced Impact Logging, v 1.0 | MSWG 1 | ||||
| Improved Forestry Management | Verified Carbon Standard | VM0045 Improved Forest Management Methodology Using Dynamic Matched Baselines from National Forest Inventories, v 1.0-1.1 | MSWG 1, Withdrawn | ||||
| Improved Forestry Management | Verified Carbon Standard | VM0045 Improved Forest Management Methodology Using Dynamic Matched Baselines from National Forest Inventories, v 1.2 | MSWG 1 | | | | CCP-Approved Board Observations |
| Industrial Biodigesters | Climate Action Reserve (CAR) | CAR Argentina Livestock, v 1.0 | Internal Assessment | | | ||
| Industrial Biodigesters | Climate Action Reserve (CAR) | CAR Dominican Republic Livestock, v 1.0 | Internal Assessment | | | ||
| Industrial Biodigesters | Climate Action Reserve (CAR) | CAR Mexico Livestock Protocol, v 2.0 | Internal Assessment | | | ||
| Industrial Biodigesters | Climate Action Reserve (CAR) | CAR U.S. Livestock Protocol, v 1.0-4.0 | Internal Assessment | | | ||
| Industrial Energy efficiency (Supply side) | Verified Carbon Standard | AM0017 - Steam system efficiency improvements by replacing steam traps and returning condensate, v 1.0-2.0 | Very Unlikely To Meet | ||||
| Industrial Energy efficiency (Supply side) | Verified Carbon Standard | AM0018 - Baseline methodology for steam optimization systems , v 1.0-4.0 | Very Unlikely To Meet | ||||
| Industrial Energy efficiency (Supply side) | Verified Carbon Standard | AM0020 - Baseline methodology for water pumping efficiency improvements, v 1.0-2.0 | Very Unlikely To Meet | ||||
| Just Transition | Verified Carbon Standard | VM0052 - Accelerated Retirement of Coal-Fired Power Plants Using a Just Transition, v 1.0 | Internal Assessment | ||||
| Landfill Avoidance | Climate Action Reserve (CAR) | CAR U.S. Organic Waste Composting Protocol, v 1.0-1.1 | Internal Assessment | | | ||
| Landfill Avoidance | Gold Standard | GS Methodology for Collection of Macroalgae to Avoid Emissions from Decomposition, v 1.0 | Internal Assessment | | | ||
| Landfill Gas Capture & Utilisation | ACR | ACR Landfill Gas Destruction and Beneficial Use Projects, v 1.0-2.0 | Internal Assessment | | | | CCP-Approved Board Observations |
| Landfill Gas Capture & Utilisation | Climate Action Reserve (CAR) | CAR Mexico Landfill Protocol, v 2.0 | Internal Assessment | | |||
| Landfill Gas Capture & Utilisation | Climate Action Reserve (CAR) | CAR U.S. Landfill Protocol, v 4.0 | Internal Assessment, Withdrawn | ||||
| Landfill Gas Capture & Utilisation | Climate Action Reserve (CAR) | CAR U.S. Landfill Protocol, v 5.0 | Internal Assessment | | | ||
| Landfill Gas Capture & Utilisation | Climate Action Reserve (CAR) | CAR U.S. Landfill Protocol, v 6.0 | Internal Assessment | | | | CCP-Approved Board Observations |
| Landfill Gas Capture & Utilisation | Gold Standard | ACM0001 - Flaring or use of landfill gas, v 15.0-19.0 | Internal Assessment | | | | CCP-Approved Board Observations |
| Landfill Gas Capture & Utilisation | Gold Standard | AMS-III.G. - Landfill methane recovery, v 9.0-10.0 | Internal Assessment | | | | CCP-Approved Board Observations |
| Landfill Gas Capture & Utilisation | Verified Carbon Standard | ACM0001 - Flaring or use of landfill gas, v 15.0-19.0 | Internal Assessment | | | | CCP-Approved Board Observations |
| Landfill Gas Capture & Utilisation | Verified Carbon Standard | AMS-III.G. - Landfill methane recovery, v 9.0-10.0 | Internal Assessment | | | | CCP-Approved Board Observations |
| Landfill Gas Capture & Utilisation | Verified Carbon Standard | CAR U.S. Landfill Protocol, v 6.0 | Internal Assessment | ||||
| Leak Detection/Repair in Gas Systems | Verified Carbon Standard | AM0023 - Leak detection and repair in gas production, processing, transmission, storage and distribution systems and in refinery facilities, v 4.0 | Internal Assessment | | | | CCP-Approved Board Observations |
| Marine Carbon Dioxide Removals | Isometric | Ocean Alkalinity Enhancement from Coastal Outfalls, v 1.0 | MSWG 6 | | | ||
| Mine Methane Capture and Utilization for Energy | ACR | ACR Capturing and Destroying Methane from Coal and Trona Mines in North America, v 1.0-1.1 | Internal Assessment | | | ||
| Mine Methane Capture and Utilization for Energy | Verified Carbon Standard | ACM0008 - Abatement of methane from coal mines, v 6.0-8.0 | Internal Assessment | | | ||
| N₂O Abatement in Adipic Acid Production | Climate Action Reserve (CAR) | CAR China Adipic Acid Production Protocol, v 1.0 | Internal Assessment | | | | CCP-Approved |
| N₂O Abatement in Adipic Acid Production | Climate Action Reserve (CAR) | CAR U.S. Adipic Acid Production Protocol, v 1.0 | Internal Assessment | | | | CCP-Approved |
| N₂O Abatement in Nitric Acid Production | Verified Carbon Standard | AM0028 - N2O destruction in the tail gas of Caprolactam production plants, v 1.0-6.0 | Very Unlikely To Meet | ||||
| N₂O Abatement in Nitric Acid Production | Verified Carbon Standard | AM0034 - Catalytic reduction of N2O inside the ammonia burner of nitric acid plants, v 1.0-5.1.1 | Very Unlikely To Meet | ||||
| N₂O Abatement in Nitric Acid Production | Climate Action Reserve (CAR) | CAR U.S. Nitric Acid Production Protocol, v 2.2 | Internal Assessment, Withdrawn | ||||
| N₂O Abatement in Nitric Acid Production | Climate Action Reserve (CAR) | CAR U.S. Nitric Acid Production Protocol, v 3.0 | Internal Assessment | ||||
| New Natural Gas Power | Verified Carbon Standard | ACM0025 - Construction of a new natural gas power plant, v 1.0-2.0 | Very Unlikely To Meet | ||||
| New Natural Gas Power | Verified Carbon Standard | AM0107 - New natural gas based cogeneration plant, v 1.0-4.0 | Very Unlikely To Meet | ||||
| ODS Destruction | ACR | ACR Destruction of Ozone Depleting Substances (ODS) and High-Global Warming Potential (GWP) Foam, v 1.0-2.0 | Internal Assessment | | | ||
| ODS Destruction | ACR | ACR Destruction of Ozone Depleting Substances (ODS) from International Sources, v 1.0 | Internal Assessment | | | | CCP-Approved |
| ODS Destruction | Climate Action Reserve (CAR) | CAR Article 5 Ozone Depleting Substances Protocol, v 1.0-2.0 | Internal Assessment | | | | CCP-Approved |
| ODS Destruction | Climate Action Reserve (CAR) | CAR U.S. Ozone Depleting Substances Protocol, v 1.0-2.0 | Internal Assessment | | | | CCP-Approved |
| REDD+ (Jurisdictional) | Architecture for REDD+ Transaction TREES (ART) | ART The REDD+ Environmental Excellence Standard (TREES) - HFLD, v 2.0 | MSWG 4 | | | | |
| REDD+ (Jurisdictional) | Architecture for REDD+ Transaction TREES (ART) | ART The REDD+ Environmental Excellence Standard (TREES) - non HFLD, v 2.0 | MSWG 4 | | | | CCP-Approved Board Observations |
| REDD+ (Jurisdictional) | Architecture for REDD+ Transaction TREES (ART) | ART The REDD+ Environmental Excellence Standard (TREES) - Removals, v 2.0 | MSWG 4 | | | | |
| REDD+ (Jurisdictional) | Verified Carbon Standard | VCS Jurisdictional and Nested REDD+ (JNR) Framework, v 4.1 | MSWG 4 | | | | CCP-Approved Board Observations |
| REDD+ (Project) | ACR | ACR Active Conservation and Sustainable Management on U.S. Forestlands, v 1.0 | MSWG 4 | | | | |
| REDD+ (Project) | Verified Carbon Standard | VM0048 Reducing Emissions from Deforestation and Forest Degradation, v 1.0 | MSWG 4 | | | | CCP-Approved Board Observations |
| Renewable Energy (Grid Connected) | Gold Standard | ACM0002 - Grid-connected electricity generation from renewable sources, v 1.0-21.0 | MSWG 3 | | | | Does not meet Board Observations |
| Renewable Energy (Grid Connected) | Gold Standard | ACM0006 - Electricity and heat generation from biomass, v 1.0-16.0 | MSWG 3 | | | | Does not meet Board Observations |
| Renewable Energy (Grid Connected) | Gold Standard | ACM0018 - Electricity generation from biomass in power-only plants, v 1.0-6.0 | MSWG 3 | | | | Does not meet Board Observations |
| Renewable Energy (Grid Connected) | Gold Standard | AM0123 - Renewable energy generation for captive use, v 1.0 | MSWG 3 | ||||
| Renewable Energy (Grid Connected) | Gold Standard | AMS-I.D. - Grid connected renewable electricity generation, v 1.0-18.0 | MSWG 3 | | | | Does not meet Board Observations |
| Renewable Energy (Grid Connected) | Verified Carbon Standard | ACM0002 - Grid-connected electricity generation from renewable sources, v 1.0-21.0 | MSWG 3 | | | | Does not meet Board Observations |
| Renewable Energy (Grid Connected) | Verified Carbon Standard | ACM0006 - Electricity and heat generation from biomass, v 1.0-16.0 | MSWG 3 | | | | Does not meet Board Observations |
| Renewable Energy (Grid Connected) | Verified Carbon Standard | ACM0018 - Electricity generation from biomass in power-only plants, v 1.0-6.0 | MSWG 3 | | | | Does not meet Board Observations |
| Renewable Energy (Grid Connected) | Verified Carbon Standard | AM0123 - Renewable energy generation for captive use, v 1.0 | MSWG 3 | ||||
| Renewable Energy (Grid Connected) | Verified Carbon Standard | AMS-I.D. - Grid connected renewable electricity generation, v 1.0-18.0 | MSWG 3 | | | | Does not meet Board Observations |
| Renewable Energy (Grid Connected/Thermal) | Gold Standard | AMS-I.C. - Thermal energy production with or without electricity, v 1.0-22.0 | MSWG 3 | ||||
| Renewable Energy (Grid Connected/Thermal) | Verified Carbon Standard | AMS-I.C. - Thermal energy production with or without electricity, v 1.0-22.0 | MSWG 3 | ||||
| Renewable Energy (Mini-Grids) | Gold Standard | AMS-I.L. - Electrification of rural communities using renewable energy, v 1.0-4.0 | MSWG 3 | | | | Does not meet Board Observations |
| Renewable Energy (Mini-Grids) | Verified Carbon Standard | AMS-I.L. - Electrification of rural communities using renewable energy, v 1.0-4.0 | MSWG 3 | | | | Does not meet Board Observations |
| Renewable Energy (Off-grid) | Gold Standard | AMS-I.A. - Electricity generation by the user, v 1.0-19.0 | MSWG 3 | | | | Does not meet Board Observations |
| Renewable Energy (Off-grid) | Verified Carbon Standard | AMS-I.A. - Electricity generation by the user, v 1.0-19.0 | MSWG 3 | | | | Does not meet Board Observations |
| Renewable Energy (Thermal) | Gold Standard | AM0036 - Use of biomass in heat generation equipment, v 1.0-7.0 | MSWG 3 | | | | Does not meet Board Observations |
| Renewable Energy (Thermal) | Gold Standard | AM0072 - Fossil Fuel Displacement by Geothermal Resources for Space Heating, v 1.0-3.0 | MSWG 3 | | | | Does not meet Board Observations |
| Renewable Energy (Thermal) | Verified Carbon Standard | AM0036 - Use of biomass in heat generation equipment, v 1.0-7.0 | MSWG 3 | | | | Does not meet Board Observations |
| Renewable Energy (Thermal) | Verified Carbon Standard | AM0072 - Fossil Fuel Displacement by Geothermal Resources for Space Heating, v 1.0-3.0 | MSWG 3 | | | | Does not meet Board Observations |
| Rice Cultivation Methane Avoidance | Gold Standard | GS Methodology for Methane Emission Reduction by Adjusted Water Management Practice in Rice Cultivation, v 1.0 | MSWG 2 | | | ||
| Rice Cultivation Methane Avoidance | Verified Carbon Standard | VM0051 Improved Management in Rice Production Systems, v 1.0 | Internal Assessment | | | ||
| SF6 Avoidance | Verified Carbon Standard | AM0065 - Replacement of SF6 with alternate cover gas in the magnesium industry, v 2.1 | Internal Assessment | | | | Does not meet |
| Sustainable Agriculture (Rotational Crops, Low Till/No Tillage etc) | Climate Action Reserve (CAR) | CAR U.S. Soil Enrichment Protocol, v 1.1 | MSWG 2 | | | ||
| Sustainable Agriculture (Rotational Crops, Low Till/No Tillage etc) | Gold Standard | GS Soil Organic Carbon Framework Methodology, v 1.0 | MSWG 2 | ||||
| Sustainable Agriculture (Rotational Crops, Low Till/No Tillage etc) | Verified Carbon Standard | VM0042 Methodology for Improved Agricultural Land Management, v 2.0 | MSWG 2 | | | ||
| Waste Heat Recovery | Verified Carbon Standard | ACM0012 - Waste energy recovery, v 1.0-6.0 | Very Unlikely To Meet | ||||
| Waste Heat Recovery | Verified Carbon Standard | AM0066 - GHG emission reductions through waste heat utilisation for pre-heating of raw materials in sponge iron manufacturing process, v 1.0 | Very Unlikely To Meet | ||||
| Waste Heat Recovery | Verified Carbon Standard | AMS-III.Q. - Waste energy recovery, v 1.0-6.1 | Very Unlikely To Meet |
A full list of all CCP-Approved methodologies, along with those still in assessment, can be found in our assessment status table.
What percentage of credits do CCP-Approved adipic acid methodologies represent?
As of March 2025, N2O abatement in adipic acid methodologies may represent 7.2% of the carbon credits using CCP-Approved Methodologies.
How we assess categories of carbon credits:
Learn about the other part of the ICVCM’s two tick process – the assessment of categories of carbon credits.
Integrity Council approves Adipic Acid and further clean cookstove methodology versions
