Enhanced geothermal systems adapt oil and gas hydraulic fracturing to reach hotter, deeper rock; experimental millimetre wave drilling vaporises it. The technology is winning bipartisan support because the muscle to build it already sits on real job sites.
The unusual part of next-generation geothermal is not the technology. It is that Republicans and Democrats in Washington, in a season defined by climate-policy trench warfare, are quietly backing the same bet.
A bipartisan group of senators introduced the Next-Generation Geothermal Research and Development Act in April 2026, directing the Department of Energy to support commercialization of geothermal systems that reach hotter and deeper rock than conventional wells can touch. Several US states are simultaneously pushing to shorten permitting timelines for the plants. Low greenhouse-gas emissions appeal to liberals; the promise of energy independence, plus the ability to redeploy drilling crews and rigs from oil and gas, appeal to conservatives. The alignment is not symbolic. It is structural, built on the recognition that the muscle needed to build these wells is already sitting on real job sites.
That muscle is the story. The two technologies drawing the most attention are enhanced geothermal systems, or EGS, which fracture underground rock with pressurized fluid and collect steam or hot water through a second well, and experimental millimetre-wave drilling, a microwave-spectrum method that melts and vaporises rock rather than grinding through it. EGS is, in plain terms, hydraulic fracturing adapted from oil and gas and pointed at a different target: always-on heat rather than hydrocarbons. Quaise, a Boston-area startup, is among the companies developing the millimetre-wave approach.
The promise of always-on, large-capacity baseload power without the greenhouse-gas profile of fossil generation has historically run into a wall of cost. The BBC's explainer frames geothermal as abundant but expensive, a description that captures the central tension: the heat underneath the ground is essentially limitless, but reaching it at competitive prices has eluded the industry for decades. Next-generation geothermal is the bet that EGS, advanced drilling, and closed-loop systems can bend that cost curve, and that the existing oil-and-gas supply chain can do the bending without a moonshot.
The legitimate criticisms have not gone away. Injecting fluid into fractured rock carries a seismic-activity risk; the same fracturing technique that made EGS politically viable is the one some environmental groups contest. And the cost barrier remains real. Until next-generation systems reach deployment scale, geothermal will not displace the fossil baseload it is being positioned against. The bill's proponents argue the benefits are larger than the risks; the risks are nonetheless named in the public record.
What to watch now is the bill's path through the Senate, the state-level permitting experiments, and whether the companies developing millimetre-wave drilling and EGS reach commercial demonstration. The bipartisan window is real, but bipartisan support is not the same as bipartisan deployment. The interesting question through the end of 2027 is not whether Washington can agree on geothermal in principle. It is whether the rock under America's feet can be turned into always-on electricity fast enough to matter.