Long Duration CO2 Storage via CO2-derived Cement Additives
Novel electrochemical process to synthesize calcium formate from cement manufacturing waste CO2.
Twelve Benefit Corporation
Recipient
San Francisco, CA
Recipient Location
11th
Senate District
17th
Assembly District
$762,089
Amount Spent
Active
Project Status
Project Update
As of February 21, 2025, the project has commenced and the first year has been completed with project progress (fiscal and technically) proceeding as planned. The Design Package Report was received January 13, 2025, and the CEC is currently awaiting the Full Stack Validation and Procurement Report.
The Issue
Project Innovation
Twelve Benefit Corporation, a California-based startup, is developing a novel and scalable electrochemical process to convert carbon dioxide (CO2), a readily available industrial waste gas, into building blocks for chemicals and fuels. This process utilizes water, renewable electricity, and CO2 as inputs, and produces high value intermediates as outputs.
Project Goals
Project Benefits
The proposed two step pathway can use flue gas CO2 captured from a cement plant to synthesize CO and subsequently calcium formate, which will be incorporated back into concrete production as a CO2-derived additive.

Environmental Sustainability
This Agreement will result in the ratepayer benefits of greater electricity reliability, lower costs, or increased safety by reducing renewable energy overgeneration, reducing CO2 emissions state-wide, and stabilizing the electric grid.
Key Project Members

Simon Stone
Match Partners

Twelve Benefit Corporation
