Geothermal Startup Quaise Energy Aims for Cost Competitiveness with Fossil Fuels

Quaise Energy, a Houston-based startup focused on geothermal power, has begun construction on Project Obsidian, a novel "superhot" geothermal plant in Oregon. The project aims to provide round-the-clock electricity and potentially undercut the cost of fossil fuels. The company recently secured $134 million in Series B funding to advance the initiative.

The company's approach involves a new drilling technique that allows for deeper penetration into the Earth's crust. Unlike traditional geothermal methods that rely on specific geological conditions like hot water reservoirs, Quaise's technology uses microwave drilling to vaporize rock. This method allows for the exploitation of hot rock formations in virtually any location.

Traditional drilling becomes increasingly expensive at greater depths due to the rapid wear of drill bits. Quaise's technology, stemming from research at MIT, utilizes gyrotrons capable of heating materials to extreme temperatures. The company has already demonstrated the viability of this technique at shallower depths.

The Oregon project will be developed in phases. The initial stage will use conventional drilling to reach temperatures of 300 degrees Celsius, after which the new technology will be employed for deeper drilling. The plant is expected to initially generate 50 megawatts, with plans for expansion. Quaise Energy believes that Project Obsidian, if successful, could significantly alter the energy market by offering a source of fossil-free baseload power.