CTV III

The Carbon TerraVault III (CTV III) project is proposed for San Joaquin County, California, where it will store CO₂ in the Mokelumne River Formation, a thick sandstone reservoir in the Sacramento Basin. The project includes six Class VI injection wells, supported by monitoring wells and surface facilities, designed to meet stringent EPA Class VI requirements. CTV III is expected to sequester an average of 2.5 million tonnes of CO₂ annually for 28 years, with total planned storage exceeding 70 million tonnes. Injection will occur at depths of 5,000–7,400 feet, with the Capay Shale providing a thick confining seal. Reservoir modeling and fault studies indicate safe long-term storage, making CTV III one of the largest Class VI projects in California and a cornerstone of CRC’s decarbonization strategy.