This is the most unsettled funding category in the country right now. Large federal awards were terminated in 2025 and are being litigated. Anything you read about this sector — including this page — needs verifying against the program's own status.
Open programs in the OpenGrants database categorized Environment. Refreshed on every site build.
Every other guide here can tell you what a programme funds and roughly what your odds are. This one cannot, and saying so is more useful than pretending otherwise.
The Inflation Reduction Act appropriated roughly $41.5 billion to EPA for grants and investments to reduce air pollution and build climate resilience. In 2025, grants funded by about $30 billion of those appropriations were terminated. Recipients have been challenging the terminations in court, and that litigation remained active as of June 2026. Separately, the One Big Beautiful Bill Act rescinded budget authority for roughly $1.2 billion EPA had not yet obligated.
Those figures come from GAO, which is the authoritative accounting rather than any advocacy source on either side.
GAO reports that about $10.2 billion remained obligated and unaffected by the terminations or litigation — of which roughly $686 million had actually been expended as of March 2026.
That gap between obligated and expended is the thing to understand. In this sector right now, “announced,” “obligated” and “actually paid” are three genuinely different states, and a programme can be in any of them.
So the operating rule is simple and unusually important here: verify each programme’s current status on the agency’s own site before you invest any time in it. Not because lists are generally unreliable, but because in this specific sector a list written eighteen months ago describes a landscape that has materially changed.
Two routes are comparatively insulated from all of this.
State programmes. State energy commissions and air resources boards run substantial funding programmes that are not party to the federal litigation. California’s are among the largest in the country, but most states run something. For many applicants this is now the more reliable path.
SBIR and STTR. Energy-focused federal R&D funding sits on separate statutory footing and was reauthorized through September 30, 2031. For a technology company with a genuine R&D question, this is both the largest and the most predictable route available — up to $323,090 for Phase I and $2,153,927 for Phase II.
Companies expecting direct federal grants. Much federal energy and transit funding goes to states, tribes, local governments, transit agencies and universities. Private companies most often participate as contractors and suppliers to those recipients. SBIR is the main direct route.
Anyone planning on the basis of a pre-2025 list. More than in any other category, old information here is actively misleading.
Applicants who cannot absorb a termination. The events of 2025 established that awards in this space can be terminated. If you receive one, read the termination provisions before you hire staff or commit capital against it. That is not pessimism; it is what the last two years demonstrated.
The earlier version of this page was a partner landing page for a climate incentives firm. It has been replaced with a factual guide because the partnership ended.
The hedging throughout is deliberate. A confident, tidy list of climate grants would rank better and would be wrong within months. In a sector where applicants make hiring and capital decisions against expected awards, a wrong list is not a neutral error.
This is not standard caution. A large volume of clean energy awards were terminated in 2025, and lists written before then describe programmes that may no longer exist in the form described.
An announced programme, an obligated award and an expended dollar are three different things. GAO reports that of EPA's IRA funds, about $10.2 billion is obligated but only about $686 million had actually been expended as of March 2026.
State energy agencies and air boards run substantial programmes that are not party to the federal litigation. For many applicants this is now the more reliable route.
Energy-focused SBIR sits on separate statutory footing, was reauthorized through 2031, and is not caught up in the climate-grant disputes.
The events of 2025 demonstrated that awards can be terminated. If you receive one in this sector, understand the termination provisions before you hire against it.
