Geo-Engines are modular, solid-state systems that convert high-pressure, high-temperature gas into clean electricity directly at the source. Designed for deployment at the wellhead, they recover thermal and kinetic energy from challenging gas streams to support off-grid power, CO₂ sequestration, and green hydrogen production. Developed with input from leading research institutions and validated by industry experts, the Geo-Engine offers a practical path to decarbonising energy-intensive operations.