Categorical Exclusion (CX) Determinations By Date

The Stimulate Utilization of Plentiful Energy in Rocks Through High-Temperature Original Technologies (SUPERHOT) program supports the small-scale research and development of technologies to enable production of geothermal energy from super-hot reservoirs by developing innovative methods of heat extraction through new designs and materials, with a focus on scalable Enhanced Geothermal Systems (EGS) and Advanced Geothermal Systems (AGS) (e.g., closed loop).
This Amended Determination follows the addition of new project milestones, teaming partners, and project locations to support the project team's small-scale research and development activities of a high-temperature sliding sleeve to increase energy recovery in enhanced geothermal systems (EGS) by 200 percent to 500 percent by increasing the contact area between the connected fracture system and the reservoir rock matrix.
Accel LNG Energy LLC filed an application with the Department of Energy's Hydrocarbons and Geothermal Energy Office (HGEO) on June 1, 2026. Accel requests authorization to conduct "small-scale natural gas exports" under DOE’s regulations at 10 CFR 590.208(a).
Port Arthur LNG, LLC filed an application with the Department of Energy’s Hydrocarbons and Geothermal Energy Office on May 5, 2026, seeking blanket authorization to engage in short-term exports of liquefied natural gas previously imported into the United States from foreign sources.