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Carbon Capture and Storage Projects


The American Carbon Registry (ACR), a non-profit enterprise of Winrock International, has approved a Greenhouse Gas Emissions Reduction Methodology for Carbon Capture and Storage Projects for the measurement, monitoring, reporting and verification of greenhouse gas emission reductions associated with capture and storage of CO2 in geologic formations. The methodology was authored by Blue Strategies and approved through ACR's public comment and scientific peer review process.

Carbon capture and storage (CCS) is the capture of carbon dioxide (CO2) from industrial processes or direct air capture of atmospheric CO2, followed by compression, transport, and injection for permanent storage of CO2 in deep underground geologic formations. By preventing CO2 from large-scale industrial facilities from entering the atmosphere or removing CO2 that currently resides in the atmosphere, CCS is a powerful tool for addressing climate change. Only anthropogenic CO2 that would otherwise be released to the atmosphere under business-as-usual conditions is eligible to create credits under this methodology. The methodology applies to multiple CO2 source types, including electric power plants equipped with pre-combustion, post-combustion, or oxy-fired technologies; industrial facilities such as natural gas production, fertilizer manufacturing, ethanol production; polygeneration facilities (facilities producing electricity and one or more of other commercial grade byproducts); and direct air capture (DAC) facilities. CO2 transport may be by pipeline only.

While there are multiple options possible for geological storage, this methodology applies to enhanced oil and gas recovery projects only, in which CO2 is injected to enhance production from hydrocarbon-producing reservoirs or currently non-producing reservoirs. Geologic storage is defined as the placement of CO2 into a subsurface formation where it will remain safely and permanently stored. Accounting aspects of the methodology are based on the Greenhouse Gas Accounting Framework for Carbon Capture and Storage Projects, a multi-stakeholder process led by the Center for Climate and Energy Solutions, for which both ACR and Blue Strategies served as workgroup participants.

Approved versions


Process documentation

16. Geologic Sequestration
File PDF documentCCS 1.0 public comments and responses
File PDF documentCCS v1.0 public comment draft
File PDF documentACR CCS Methodology v1.0
File PDF documentCCS peer review
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