Telling the CLF Story




Key to our values is “action”. We empower our members and partners to advance new ideas and approaches and launch impactful member-led initiatives and projects. Not only do we pave the way and accelerate action by providing the research, resources and connections to fuel these ideas, but we often incubate the project and provide funding connections.

Structural Engineers 2050 Challenge (SE 2050) | Ongoing

Members of the Carbon Leadership Forum developed a CHALLENGE to inspire structural engineers to contribute towards the global vision of Zero Carbon buildings by 2050 through committing to meeting embodied carbon benchmarks and ambitious reduction targets. The American Society of Civil Enginners Structural Engineers Institute (SEI) have taken on this challenge working to create a commitment program. Learn more about their work at


Bay Area Embodied Carbon Project | Completed

The CLF supported a collaborative proposal by Marin County, StopWaste, Alameda County, and the Ecological Building Network to establish best practices, specifications and model policies that address the embodied emissions in building materials, starting with concrete. On January 1, 2020 Marin County adopted the Bay Area Low-Carbon Concrete Code, the first building code of its kind in the United States. Bruce King a Carbon Leadership Forum member, catalyzed the code’s development.


Embodied Carbon Policy | Ongoing

Buy Clean is embodied carbon procurement policy enacted in California and under consideration in other states. In 2018, CLF produced a study of existing embodied carbon policy and proposed methods to categorize structural materials and report structural material quantities and origins. In 2020 and beyond, CLF will provide resources, training and strategic consultation to inform Buy Clean efforts at city, state and federal level.


Embodied Carbon in Construction Calculator (EC3) | Ongoing

The Embodied Carbon in Construction Calculator (EC3) tool is a free and easy to use tool that that allows allows benchmarking, assessment and reductions in embodied carbon, focused on the upfront supply chain emissions of construction materials.

Skanska USA and C Change Labs conceived of the solution, and initial development was jointly funded by Skanska and Microsoft, who determined that an open platform would provide maximum impact for the industry and society at large. To accelerate development of this solution, the Carbon Leadership Forum incubated the project with strong leadership and additional financial support from Autodesk, Interface, the MKA Foundation and the Charles Pankow Foundation, lead sponsor and grant manager. With over 50 foundation and industry sponsors in support the tool was launched publicly in November of 2019.

Find & Compare Materials

Simple sorting and visualization of supply chain specific EPD data, with the ability to see material category baselines and set material category targets.

Plan & Compare Buildings

Simple visualization of a project’s potential and realized upfront embodied carbon emissions, with the ability to see conservative baselines and set achievable reduction targets.

Declare Your Products

Digital EPD platform and EPD automation. View specific EPD data per product in a standardized digital format.

Verify & Audit

Audit and verify digital EPDs, if you are a Program Operators/LCA Practitioner responsible for third-party verified EPDs.

Continued development of the EC3 The tool is in the hands of a new nonprofit, Building Transparency.

The EC3 tool’s subsequent effect on the industry is driving demand for low-carbon solutions and incentivizing construction materials manufacturers and suppliers to invest in disclosure, transparency and material innovations that reduce the carbon emissions of their products.

The Carbon Leadership Forum is responsible for establishing the data and methods used to categorize and assess the embodied carbon data in the EC3 tool. Extracting data from PDFs and creating a digital EPD database requires some interpretation and each material has unique performance and life cycle assessment issues to address when evaluating results included in EPDs.