California’s first carbon vault starts trapping CO2 more than one mile underground

Photo caption: Carbon TerraVault I injects captured CO2 into depleted reservoirs for permanent storage. Photo credit: California Resources Corporation. Article by Neetika Walter. Interesting Engineering – May 26, 2026.

California has begun permanent underground carbon dioxide storage for the first time after California Resources Corporation (CRC) announced the first CO2 injection at its Carbon TerraVault I (CTV I) project in Kern County. The project, located at CRC’s Elk Hills Field, is now the state’s first operational carbon capture and storage (CCS) facility. It captures carbon dioxide from CRC’s cryogenic gas plant and injects it into depleted oil and natural gas reservoirs more than a mile below the surface for long-term storage. […]

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