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Environmental & Energy

Oct. 7, 2026

Regulating the market for pore space: California's attempt to map out a new frontier

California's proposed framework for carbon sequestration projects seeks to prevent landowner holdouts through unitization but may require significant revisions to address constitutional takings concerns and other legal and regulatory obstacles.

Jill E.C. Yung

Senior Counsel
Allen Matkins Leck Gamble Mallory & Natsis LLP

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Regulating the market for pore space: California's attempt to map out a new frontier
Shutterstock

In 2022, the California Legislature enacted Senate Bill (SB) 905, directing the California Natural Resources Agency (CNRA) to publish a framework for developing government sanctioned agreements to manage multiple tracts of land overlying a geologic storage reservoir for purposes of operating a carbon dioxide sequestration (storage) site. This process, known as unitization, ensures that holdout property interests cannot derail a carbon capture and sequestration (CCS) project or leverage a m...

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