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Energy

House Science Leaders Introduce a $10 Billion Fusion Bill

The bipartisan proposal from the House Science Committee comes with the backing of the Fusion Industry Association.

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The capitol and a tokamok.
Heatmap Illustration/Getty Images

The nuclear fusion industry has been asking for a $10 billion investment from the U.S. government. Now, there’s a bipartisan coalition in Congress ready to give it to them.

On Thursday, Californians Zoe Lofgren, ranking member of the House Science Committee, and Jay Obernolte, chair of the body’s Subcommittee on Research and Technology, introduced the American Leadership in Fusion Act, which would pump some $10 billion into the industry to commercialize the frontier nuclear energy technology.

The $10 billion number was not pulled out of a hat (or a stellarator). The Fusion Industry Association called for a “one-time $10 billion injection of U.S. public capital into efforts and partnerships with the private fusion industry” late last year, a figure the group said was based on analyses from the National Academies of Science and a Department of Energy advisory committee.

“Fusion is the future, and this bipartisan bill is a major step in capitalizing on the promise of its emission-free power,” Lofgren said in a statement. “This bill will unleash a new era of fusion energy development in the United States.”

At our Heatmap House event at New York Climate Week on Wednesday, Commonwealth Fusion Systems CEO Bob Mumgaard acknowledged that $10 billion is a lot of money, but “you have to say what gets the job done. It’s a disservice to lowball what is needed. It’s this very important thing — it’s an entire new industry. Let’s treat it as such.”

The fusion industry hasn’t necessarily been hurting for private capital. In July, the FIA reported that 56 companies had raised almost $4.5 billion in the past year. CFS alone announced $1 billion of new funding in July, bringing its total investment up to $4 billion. Of the over $14 billion the industry has raised, almost a third has gone to CFS.

Whether this federal funding ever materializes remains to be seen. A Department of Energy official poured cold water on the $10 billion figure in July, telling the industry that the figure wasn’t plausible, according to Politico.

Obernolte and Lofgren’s bill would split the $10 billion into several pots all aimed at commercializing fusion technology, which has been the subject of university and scientific consortium research for decades.

The biggest chunk, almost $4 billion, would be devoted to building test facilities to work on materials and fuel. Another $2 billion would be put into the existing “milestone-based development program,” established by 2020’s Energy Act and expanded in the 2022 CHIPS and Science Act, which links funding to preset scientific and business targets. CFS has won funding through this program, as have seven other companies including Thea Energy and Tokamak Energy. Another $3 billion in the bill would go to a new demonstration program, analogous to the existing Advanced Reactor Demonstration Program for fission projects, which would probably involve fewer awards for bigger projects that require substantial cost sharing.

While it’s unlikely that this bill could become law this Congress, considering that the House of Representatives has left town to campaign for the midterms, fusion legislation typically garners bipartisan support. The ADVANCE Act, which included regulatory language easing fusion’s regulatory pathway, was signed into law in 2024 after passing the Senate in an 88-2 vote. It is unlikely, Democratic committee staff acknowledged, that the bill get a vote this Congress, but it could start momentum towards a bipartisan fusion bill in a future Congress.

Science Committee staff have been working on the American Leadership in Fusion Act since earlier this year, soliciting advice from national labs, universities, and companies working on fusion technology. The bill has won the endorsement of fusion industry heavyweights like CFS, the Fusion Industry Association, and several energy policy nonprofits and universities, including the Clean Air Task Force and ClearPath Action.

And it’s not crazy to expect the administration to take an interest in the bill, either, considering the latter’s bipartisan backing and alignment with the former’s own stated goals, a senior Democratic committee staffer told me.

Earlier this year, the Department of Energy released a Fusion Science and Technology Roadmap, which “aims to usher a burgeoning U.S. fusion industry toward maturity on the most rapid, credible timeline” including through “leveraging public and private sector investments.”

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