High-enthalpy geothermal energy can be generated where the local geothermal gradient is steep, meaning higher temperatures at shallower depth. According to Chandrasekharam & Bundschuh (2008) a ...

In volcanic regions with a high geothermal gradient (e.g., parts of Hawaii, Alaska, and the West Coast) temperatures of 375 °C may be found at depths as shallow as 5 km. Elsewhere, it will be ...

That’s why Gradient Geothermal wants to reuse existing wells. “If you can remove the cost of drilling through the use of facilities that are already there, you go a long way toward making ...