Pressure geothermal
Pressure Geothermal represents an evolution of traditional geothermal, leveraging breakthroughs in subsurface technologies to create power generation & energy storage systems that are safe, scalable, and cost-effective for mass commercial use.
Pillars of Pressure Geothermal
Terrawatts of Low-Cost Sustainable Energy
Subsurface breakthroughs unlock 25-50% (modeled) greater net power output compared to traditional hot dry rock geothermal technologies, creating a $/kWh profile that is scalable for mass commercialization.
Leveraging Geothermal Anywhere
Allows for geothermal deployment in “hot dry rock", an abundant resource around the globe, thus enabling power plants to be built just about anywhere.
Ready for Scale
Leveraging off-the-shelf hardware from existing oil & gas supply chains & established regulatory approvals allows us to spin up new power plants in 24-36 months
Unlocks Long-Duration Energy Storage Plants
Small footprint long-duration energy storage plants pair with intermittent energy sources to create a viable form of baseload power.
Key Elements
of Pressure Geothermal
Fractures that inflate and deflate in the engineered reservoir to store water under pressure and transfer heat from the earth's subsurface to the water.
Injects the water into our wells at high pressures.
Hot fluid flows out of the producer well and the heat is extracted at surface through a heat exchanger. The cooled fluid is then reinjected into the injector well to reheat. The wells switch between injector and producer throughout the 24/7 cycle.
sCO2 fluid transfers heat from the hot well water through the thermodynamic process to generate electricity. The sCO2 turbine creates electricity from the hot temperature of the fluid. Sage has developed the sCO2 turbine for geothermal use and it will replace standard Organic Rankine Cycle turbines in use today, doubling efficiencies and increase net output of the system.
Fractures that inflate and deflate in the engineered reservoir to store water under pressure and transfer heat from the earth's subsurface to the water.
Injects the water into our wells at high pressures. The pump is powered by grid energy or energy from intermittent sources such as wind or solar.
High-pressure water is discharged from the well and spins the flywheel style Pelton turbine to generate electricity. This turbine is commonly used in Pumped Storage Hydropower applications.
Stores water coming from the storage well that is later injected back into the well.
Power Generation
Uses thermal and mechanical energy from the Earth in a two-well system to generate sustainable, resilient, and affordable utility-scaled power.
Energy Storage
Uses mechanical energy from the Earth in a single-well system to charge and discharge energy for long-durations of 8+ hours to multi-day timescales.
Company
Our mission is to solve energy challenges by developing sustainable, resilient energy using the world’s naturally abundant geothermal resources
