Geothermal startup Mazama Energy raised $135 million in an oversubscribed Series B, the startup said Thursday. The fresh funding will help the company develop horizontal wells in superhot rocks capable of generating 15 megawatts of electricity per well. Mazama plans to start generating electricity sometime next year and said its first site in Oregon is capable of producing 10 gigawatts of electricity. That’s a sharp upward revision from the company’s estimate last year, when investor Vinod Khosla said the site had the potential to produce 5 gigawatts. Enhanced geothermal startups are shaping up to be the dark horse in the battle to power AI data centers and other large loads on the grid. While tech companies and data center developers have been throwing their weight behind natural gas, geothermal startups have been quickly advancing their technology. Unlike previous geothermal projects, enhanced geothermal startups are targeting deeper and hotter rock. Mazama, for example, has drilled ...
Geothermal Project Finance Structuring: SPVs, Mezzanine Debt, Blended DFI Finance and Contingent Capital for Drilling Risk
Geothermal Project Finance Structuring: SPVs, Mezzanine Debt and Blended Capital for Drilling Risk Image : A depiction of a geothermal complete project Geothermal power sits in an awkward place on the project finance spectrum. It behaves like long‑lived infrastructure once it’s operating, but it looks like frontier exploration during the early drilling phase. To build bankable deals in that environment, developers and investors have had to invent a toolkit of SPV structures, mezzanine drilling tranches, blended public–private finance and contingent instruments that allocate subsurface risk without blowing up returns. This is not just a technicality for lawyers and bankers. The way geothermal deals are structured determines whether otherwise viable resources ever reach financial close. It also shapes how much upside sponsors keep via GP carry, how quickly equity can recycle, and how development platforms position themselves in a crowded clean‑energy pipeline. Why geothermal is stru...