US Geothermal Tax Credits in 2026: What Is Actually Still Alive After OBBBA For an industry that spent more than a decade building financial models around a stable federal incentive structure, 2026 has been a year of whiplash. The 30% federal geothermal tax credit that developers and homeowners built forecasts around is gone in one form and still alive in another, and even the IRS’s own public guidance has been confusing enough to trigger uncertainty across the market. That confusion is not a minor clerical issue. It is shaping investment decisions, contractor sales pitches, homeowner timelines, and project finance assumptions right now. If you work in geothermal, the key question is no longer whether federal incentives exist, but which incentive applies, to which project type, and under what ownership structure. The law that changed the timeline To understand where things stand in 2026, you have to start with the Inflation Reduction Act of 2022, which created a long runway for clean e...
If You Had $1 Billion for Geothermal in 2026, Where Wouldn’t You Invest? Image: A thematic image of a drilling rig on a geothermal, well pad Geothermal is becoming one of the most interesting corners of clean energy, but that does not mean every market deserves your capital. In 2026, the smartest geothermal investors are not asking where the hottest rocks are, they are asking where geology, contracts, policy, and execution line up well enough to justify real money. The real investment test If you had $1 billion to deploy in geothermal, you would not start with hype. You would start with bankability, because geothermal is a business of drilled wells, long timelines, heavy upfront costs, and a very unforgiving path from theory to cash flow. A project can look excellent on a resource map and still underperform badly if permitting drags, community consent is weak, tariffs are mispriced, or the grid cannot absorb the power. That is why this article focuses on where you would not put capita...