About Us

The Climate Action Reserve is the most trusted, efficient, and experienced offset registry for global carbon markets. A pioneer in carbon accounting, the Reserve promotes and fosters the reduction of greenhouse gas (GHG) emissions through credible market-based policies and solutions. As a high-quality offset registry for voluntary carbon markets, it establishes rigorous standards involving multi-sector stakeholder workgroup development and local engagement and issues carbon credits in a transparent and publicly available system. The organization also supports compliance carbon markets in California, Washington and internationally.

The Reserve offsets program demonstrates that high-quality carbon offsets foster reductions in GHG pollution that are real, additional, verifiable, enforceable, and permanent. Offset projects registered with the Reserve support environmental and community co-benefits, and often reduce local air pollution, restore habitat and ecosystems, spur growth in new green technologies, and allow emission reduction goals to be met at lower cost.

The Reserve began as the California Climate Action Registry, which was created by the State of California in 2001 to address climate change through voluntary calculation and public reporting of emissions. The California Registry helped over 415 leading California-based corporations, organizations, government agencies and municipalities to voluntarily calculate and publicly report their GHG emissions. Its established expertise in emissions accounting translated into expertise in emissions reductions accounting for the North American carbon market.

The Reserve is an environmental nonprofit organization headquartered in Los Angeles, California with staff members located around the world. The Reserve is an equal opportunity provider.


To develop, promote and support innovative, credible market-based climate change solutions that benefit economies, ecosystems and society.

Diversity Mission Statement

The Climate Action Reserve respects and celebrates all forms of diversity in its personnel, programs, and procedures. The Reserve believes it is critical to foster a welcoming and inclusive space for staff, to support diversity and equitable opportunities in the environmental field, and to operate programs that are culturally responsive and benefit all communities.

Annual Reports

2023 Annual Report

2022 Annual Report

2021 Annual Report

2020 Annual Report

2019 Annual Report

2018 Annual Report

2017 Annual Report

2016 Annual Report

2015 Annual Report

2014 Annual Report

2013 Annual Report

2012 Annual Report

2011 Annual Report

2010 Annual Report

2009 Annual Report

2008 Annual Report

Form 990