Quaise Energy has made a significant splash in the clean energy sector with the securing of $134 million (£106 million) in its Series B financing round. This substantial investment will drive the development of Project Obsidian, set to become the world's first commercial superhot geothermal power plant in Central Oregon.
The funding was led by Prelude Ventures, with notable backing from JERA Co., Inc., Japan's largest power generation company, and Idemitsu Kosan, one of Japan's biggest integrated energy companies. This injection of capital is just the beginning – Quaise Energy plans to combine it with project-level financing and debt to fund its pioneering projects.
The key to Project Obsidian lies in Quaise Energy's innovative millimeter wave drilling system, which can reach depths far greater than traditional geothermal methods, accessing hotter rock formations. The company has already made significant progress, reporting that the drilling system is approaching one kilometre of depth at its field site in Central Texas.
Superhot geothermal energy taps into the immense heat found deep within the Earth's crust – often reaching temperatures over 374°C and pressures above 22 MPa. Unlike conventional geothermal, which requires specific geological conditions, superhot geothermal has the potential to be deployed in a wider range of locations, offering a constant baseload power source unaffected by weather conditions like solar or wind.
While Quaise Energy's US projects may not directly impact UK energy production, the advancement of superhot geothermal technology holds long-term implications for the country. The UK is actively exploring renewable energy sources to meet its climate targets and reduce reliance on fossil fuels. If proven successful and scalable, superhot geothermal could offer another viable option for secure, low-carbon electricity generation globally – potentially influencing future energy policy and investment decisions in the UK.
The involvement of major international energy players like JERA and Idemitsu Kosan highlights global interest in diversifying energy portfolios and investing in next-generation clean technologies. Such international collaborations and technological breakthroughs are crucial as countries worldwide grapple with energy security, affordability, and the imperative to decarbonise. The success of projects like Quaise's Project Obsidian could accelerate the timeline for widespread adoption of advanced geothermal solutions.