US FY2027 budget request for fusion lands below authorized levels
The White House's FY27 request for Fusion Energy Sciences is $755M — $50M below FY26 and well short of the $1.11B authorized by the CHIPS and Science Act — even as public-private partnership funding rises to $135M and a new Office of Fusion is proposed. A contrast with Europe, where Germany just joined a multi-billion-euro fusion IPCEI.
On April 3, 2026 the White House's FY2027 Presidential Budget Request asked for $755.25M for the Department of Energy's Fusion Energy Sciences (FES) program — $50M below the $805.65M enacted for FY2026, and well under the $1.114B that the bipartisan CHIPS and Science Act authorized for the year. As a request, the number is a starting point for Congress, not final appropriations.
The picture is mixed rather than uniformly down. Funding for public-private partnerships — the Milestone Program, INFUSE, private-facility research and the fusion Bridge program — rises to $135M, a $35M increase, and the request stands up a new $10M Office of Fusion. Even so, the Fusion Industry Association flagged the overall request as falling short of the authorized trajectory.
The timing stands in contrast with Europe, where Germany has just joined a multi-billion-euro fusion IPCEI. We track the public-funding signals alongside private investment because the path to a power plant depends on both — and because a tracker that logs only the good news would mislead.