Geothermal

  • Tapping the Heat Beneath Our Feet

    EcoTech Note:  Geothermal power may be a breakthrough clean energy story of the next decade—but only if it survives the gauntlet ahead. In this essay, associates at a venture capital fund connect the dots: costs to build and operate geothermal are dropping fast, pioneers are struggling through the financing “Valley of Death,” and smarter public policy—especially streamlined permitting or strategic incentives—could tip the balance and unleash a new wave of clean, reliable power.

    As 2024 wrapped, reporters declared it a breakout year for next-generation (“next-gen”) geothermal and the year of enhanced geothermal’s rise. In 2025, the momentum continues, with geothermal deemed …

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    TDK Ventures Invests $38m Series A In new geothermal pilot plant

    TDK Ventures has invested $38m in a Series A fundraising for Rodatherm, a startup with a new closed-loop geothermal technology.  The money is earmarked for a pilot plant in Utah that will demonstrate Rodatherm’s patented approach to harvesting geothermal heat using refrigerant fluids instead of water flowing through a “closed-loop system.”  A closed-loop system is composed of pipes running down to the hot rock, across the hot rock, and then back up.   By not having the working fluid ever leave the closed-loop piping, Rodatherm can use fluids that they claim transfer heat more efficiently and avoid any fluid losses due to leakage.