Wabash Valley

The Wabash Carbon Services (WCS) project is a Class VI carbon storage initiative in Vigo County, Indiana, designed to permanently sequester CO₂ in the deep Potosi Dolomite formation. The project plans to inject up to 20 million metric tons of CO₂ over a 12-year operational period, with CO₂ sourced from Wabash Valley Resources (WVR). Injection will occur at depths around 4,500 feet in the porous and permeable intervals of the Potosi Dolomite, while long-term containment will be ensured by multiple confining layers, most importantly the 314-foot-thick Maquoketa Group shale, which serves as the primary regional seal. To safeguard drinking water and verify containment integrity, WCS will install two confinement monitoring wells in the Silurian formations above the injection zone and ten shallow water monitoring wells to track the quality of local water sources. The project’s monitoring system is designed for continuous measurement of pressure, temperature, and water chemistry to detect potential leakage early. Geological characterization, seismic studies, and well testing confirm the absence of faults or fractures compromising containment, and modeling indicates the site has the injectivity and capacity required for safe long-term storage. The project draws on the expertise of the Illinois State Geological Survey, which has prior CCUS commercialization experience at the ADM facility in Decatur, Illinois, positioning WCS to advance carbon storage deployment in the Illinois Basin.