Underwater Volcanoes Are Geothermal Energy’s Next Frontier

Seattle's Endurance Energy is pioneering a new method to harness geothermal power from underwater volcanoes. A 100-kilowatt generator will soon be positioned at the seafloor off Oregon's coastline, utilizing temperatures up to 750 degrees Fahrenheit from a hydrothermal vent. This pilot project is set to validate the commercial potential of this technology, which could provide sustainable, round-the-clock, and emissions-free electricity.

Andrew Redd, the company's founder and CEO, believes this innovation could one day power entire cities. Geothermal energy's reliability as a baseload clean energy source makes it an attractive solution to the clean power problem. Unlike wind and solar, geothermal is not affected by weather conditions, and it enjoys broad bipartisan support among investors.

While historically limited to rare geographies with surface heat from the Earth's core, like undersea volcanoes, recent advancements in drilling techniques have made it possible for companies to tap into this heat virtually anywhere on Earth. However, underwater geothermal development remains more expensive than onshore projects.

Nonetheless, marine-based projects offer advantages such as reduced land competition and fewer objections from local communities. Despite being in the early stages, underwater and enhanced geothermal energy are poised for significant growth. The U.S. Department of Energy anticipates that enhanced geothermal technologies could power 65 million homes by midcentury.

Large tech companies and Wall Street are also investing in geothermal energy to meet the growing energy demands, especially with the rise of artificial intelligence. A report by Rhodium Group suggests that geothermal energy alone could meet up to 64 percent of the projected growth in data center energy demand by the early 2030s if scaled up rapidly.