Nimbus 1

The Nimbus 1 ARCCS Project, developed by Natural State Renewables, is located in Ouachita County, southern Arkansas. The project proposes a large-scale CO₂ sequestration hub designed to store emissions from regional industrial sources, with a 20-year injection period (2028–2048) across four dedicated injection wells. The design injects a total of 125 MMscf/d (~2.4 million tonnes per year) of CO₂, resulting in an expected cumulative storage of ~48 million tonnes over 20 years. Each injection interval is vertically segregated, ensuring independent plume migration and long-term containment. Injection will be distributed across four major formations: the Smackover, Cotton Valley B, Cotton Valley A, and Hosston formations.