Low-Carbon Cement Protocol Development

The Climate Action Reserve is developing a Low-Carbon Cement Protocol that will provide guidance on how to quantify, monitor, report, and verify the climate benefits associated with the alternative use of supplementary cementitious materials (SCMs) to produce cement. Production of ordinary portland cement (OPC) accounts for approximately seven percent of all global carbon dioxide emissions with most of these emissions resulting from calcination to produce clinker, the primary intermediate component of OPC. With the opportunity to significantly reduce emissions by replacing clinker with byproduct or naturally derived SCMs, the Low-Carbon Cement Protocol will incentive industrial-scale SCM availability to meet market demands and achieve emission reduction ambitions.  

Stakeholder Engagement

The Reserve seeks to engage stakeholders throughout the Low-Carbon Cement Protocol development process to identify and incorporate applicable laws, norms, and conditions applicable to the cement industry in the United States as well as specific improvements and changes to existing industrial manufacturing processes to ensure its successful implementation.

Kickoff Webinar

The Reserve held a public webinar on November 3, 2022, to kick-off the Low-Carbon Cement Protocol development process.


The Low-Carbon Cement Protocol is being developed through the Reserve’s multi-stakeholder workgroup process. The Reserve strives to create a well-balanced workgroup consisting of industry representatives, project developers, environmental NGOs, verification bodies, independent consultants, academia, and government bodies. Interested stakeholders are encouraged to apply by filling out the application below and submitting it to [email protected] by Friday November 18, 2022.

Stakeholders not chosen to be or not interested in being part of the workgroup are encouraged to participate in the process as “observers.” Observers may attend workgroup meetings in listen-only mode, submit written comments on the draft methodology when it is available for public comment, and attend the public webinar(s) held during the public comment period.

Development Timeline

The following timeline will be updated as the protocol development process unfolds.

Protocol kickoff webinar November 3, 2022
Workgroup SOIs due November 18, 2022
Formation of workgroup November 2022
Reserve staff finalizes draft protocol November 2022
Workgroup meetings November/December 2022
Public comment period January 2023
Protocol presented to Reserve Board for approval March 2023


Please contact the Reserve with questions or comments.