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Tallgrass subsidiary gets EA for massive WY sequestration project

A Tallgrass subsidiary has received an environmental assessment for a massive CO2 sequestration project within pore space on federal lands in Wyoming.

Moxa Carbon Storage, an entity associated with Tallgrass has received an environmental assessment from federal authorities for a massive carbon storage project in southwest Wyoming.

The application was originally submitted under the entity Tallgrass High Plains Carbon Storage, LLC, which was changed to Moxa Carbon Storage, LLC in February of 2023. 

The proposal from Moxa Carbon requests the use of Bureau of Land Management-administered federal pore space in Lincoln, Uinta and Sweetwater counties in southwest Wyoming. 

The project is called Southwest (SW) Wyoming CO2 (carbon dioxide) Sequestration Project. The right-of-way needed for the pore space is for the injection and permanent geologic sequestration of carbon dioxide and does not include any related surface infrastructure. Total federally managed BLM lands requested for the right-of-way is 605,091 acres.

Additional ROWs may be submitted to the BLM in the future, should Moxa Carbon eventually seek BLM authorization to construct and use surface infrastructure on BLM-administered public lands. 

As Moxa Carbon explained in a letter submitting their application to the BLM, the pore space ROW is the “first step in a larger project that will consist of CO2 capture infrastructure at planned ammonia production facilities and other potential CO2 source points, CO2 compression and pumps, a CO2 pipeline, and sequestration surface facilities. Once the details of the larger sequestration project are finalized, [Moxa Carbon] will request the use of specific federal surface lands through a separate ROW application.”

Tallgrass is also developing a sequestration hub in southeastern Wyoming near the terminus of its Trailblazer pipeline conversion project, which is an existing 436-mile natural gas pipeline, of which Tallgras will convert 392 miles to CO2 service.

Kansas-based Tallgrass has announced partnerships with Equinor and Korea Western Power to develop hydrogen and ammonia production projects in the U.S.

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