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 2, 2026, the project is well underway with significant technical progress and deliverables completed throughout 2025. The Full Stack Validation and Procurement was delivered on February 13, 2025. The Stack Testing Plan was delivered on June 4, 2025. Twelve completed its second Critical Project Review on September 5, 2025.
The Issue
This project is developing innovative new technologies to support the decarbonization of the industrial sector. Twelve’s technology enables the utilization of CO2 by transforming it into a value-added cement additive. This process could leverage the process emissions from cement production.
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
Twelve’s technology will benefit the ratepayer through greater electricity reliability and lower costs by reducing renewable energy overgeneration, reducing CO2 emissions state-wide, and stabilizing the electric grid.
Environmental Sustainability
This Agreement will result in the ratepayer benefits of environmental public health by reducing CO2 emissions state-wide.
Economic Development
This Agreement aims to monetize waste feedstocks from the cement production, selling back additives for cement industry use and helping them offer lower-emissions products.
Reliability
This Agreement will result in the ratepayer benefits of greater electricity reliability, lower costs, or increased safety by reducing renewable energy overgeneration, and stabilizing the electric grid.
Key Project Members
Simon Stone
Match Partners
Twelve Benefit Corporation
