Sage Geosystems Raises $97M for Geothermal Power Plant

Imagine tapping into the Earth's natural heat without needing volcanoes, hot springs, or any special location. That's exactly what Sage Geosystems is doing with its groundbreaking Pressure Geothermal technology, and investors just bet nearly $100 million that it will work.

The Houston-based company closed over $97 million in Series B funding to build its first commercial next-generation geothermal power plant. Unlike traditional geothermal energy that requires rare geological conditions, Sage's approach works with hot, dry rock formations found almost anywhere in the world.

Here's how it works: Sage creates an engineered underground reservoir of hot water that expands and contracts with the Earth's natural elasticity. The technology extracts both heat and pressure from deep rock formations, converting them into reliable, carbon-free electricity.

The company will deploy its first commercial facility at an existing Ormat Technologies power plant. Ormat, a geothermal industry leader with six decades of experience, co-led the funding round alongside Carbon Direct Capital, signaling strong confidence in the technology.

"Pressure Geothermal is designed to be commercial, scalable, and deployable almost anywhere," said Cindy Taff, CEO of Sage Geosystems. The technology unlocks over 130 times more geothermal resource potential in the United States alone compared to conventional geothermal methods.

The timing couldn't be better. Tech giants are desperately searching for clean, reliable power sources to fuel their rapidly expanding AI data centers, which require massive amounts of constant electricity.

Last August, Meta partnered with Sage to deliver up to 150 megawatts of new geothermal baseload power east of the Rocky Mountains to support its data center growth. The U.S. Department of Defense has also signed on to deploy Sage's technologies.

The Ripple Effect

This breakthrough addresses multiple challenges at once. It provides clean firm power that doesn't depend on wind blowing or sun shining, helping data centers meet carbon reduction goals without sacrificing reliability.

Beyond power generation, Sage's technology also enables long-duration energy storage and district heating applications. The same underground reservoir can store excess energy and release it when needed, acting like a massive natural battery.

Founded in 2020 by a leadership team with over 200 years of combined oil and gas experience, Sage is applying proven drilling techniques to revolutionize clean energy. The company's approach transforms stranded thermal resources into accessible, commercial-scale power generation.

The diverse investor group includes SiteGround Capital, UC Berkeley Foundation's Climate Solutions Fund, and several energy-focused investment firms. Ormat CEO Doron Blachar called Sage's approach "well aligned with our strategy to move faster from concept to commercialization."

With construction beginning on the first commercial facility, the world is about to find out if hot rocks beneath our feet can power the digital future without adding carbon to the atmosphere.