United States Steel Corporation and CarbonFree have signed an April 2024 definitive agreement to capture carbon emissions generated from U. S. Steel’s Gary Works Blast Furnaces.

The project will use CarbonFree’s SkyCycle™ technology to capture and mineralize up to 50,000 metric tons of carbon dioxide per year and will have the opportunity to be expanded in the years to come.

The project is U.S. Steel’s first step in exploring the scalability of the for potential future implementation across the enterprise.

Construction on the SkyCycle plant in the U. S. Steel Gary Works facility is expected to commence as early as summer 2024 with operations projected to begin in 2026. The definitive agreement has a term of 20 years following its in-service date.

CarbonFree’s SkyCycle solution captures carbon emissions from hard-to-abate industrial sources before they enter the atmosphere and converts them into a carbon-neutral version of calcium carbonate.

In addition to capturing carbon dioxide, CarbonFree will use slag produced by the blast furnace operation as part of the calcium carbonate production process.