Quaise Energy today announced the first close of its Series B financing, raising $134 million with additional equity and debt capital expected to close imminently. The round was led by Prelude Ventures, with strategic investments from JERA and Idemitsu, two of Japan's largest energy companies. Nearly all existing investors, including Safar Partners, participated in the round.

Quaise Energy is unlocking the Earth's deep heat to deliver clean, reliable, baseload energy at scale-almost anywhere in the world. As both a technology innovator and project developer, Quaise builds and operates solutions that harness superhot geothermal energy far below the surface, enabling power generation that can rival the output of today's most efficient fossil fuel and nuclear plants. With its millimeter wave drilling technology, developed after more than a decade of research at the Massachusetts Institute of Technology (MIT), Quaise's mission is to make superhot geothermal a backbone of the modern energy system, offering affordable, zero-carbon power and true energy independence for communities and nations everywhere.