Sage Geosystems Inc. is a privately held Houston-based company founded in 2020 that develops and commercializes proprietary enhanced geothermal systems (EGS) known as Pressure Geothermal or geopressured geothermal systems.
The firm applies oil and gas drilling, fracturing, and subsurface engineering techniques to access heat and pressure in hot dry rock formations, enabling baseload power generation and long-duration energy storage without reliance on traditional hydrothermal resources. Key technologies include cyclic injection-production systems, GeoTwin modeling, and surface facilities for energy recovery, targeting temperatures of 100-250°C at accessible depths.
Headquartered in Houston, Texas, Sage operates primarily in the United States with its first 3 MW commercial energy storage facility (SMECI plant) placed in service in Christine, Texas, in 2026 and connected to the ERCOT grid. It has announced projects and partnerships in Nevada and California, contracts with Meta for up to 150 MW, U.S. Department of Defense demonstrations, and a feasibility study collaboration with Chiyoda Corporation on high-pressure surface equipment.
Backed by investors including Ormat Technologies, Carbon Direct Capital, Chesapeake Energy, and others with over $150 million raised, the company is positioned as an innovator bridging oilfield expertise with next-generation geothermal to deliver scalable, cost-competitive clean energy solutions.
Official website: sagegeosystems.com
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