DOE Finalizes National Fusion Roadmap, a 'Build-Innovate-Grow' Strategy Targeting Commercial Fusion Power in the Mid-2030s
The Energy Department released its finalized Fusion Science and Technology Roadmap on June 9, 2026, a national strategy built on three pillars and aimed at a US fusion pilot plant in the mid-2030s.
Overview
The U.S. Department of Energy released its finalized Fusion Science and Technology Roadmap on June 9, 2026, a national strategy intended to accelerate the development and commercialization of fusion energy, according to the U.S. Department of Energy. The roadmap sets an explicit target of fusion pilot plants and commercial fusion power in the mid-2030s.
The document is organized as what the American Society of Mechanical Engineers describes as DOE’s “Build-Innovate-Grow strategy for advancing a robust and competitive U.S. fusion energy sector.” The Fusion Industry Association said the strategy is meant “to enable the delivery of a U.S. fusion pilot power plant in the mid-2030s.”
What We Know
The roadmap rests on three pillars. The first is to “Build critical infrastructure to close fusion materials and technology gaps,” the second to “Innovate through advanced research, high-performance computing, and artificial intelligence,” and the third to “Grow the U.S. fusion ecosystem through public-private partnerships, supply chain development, workforce growth, and commercialization pathways,” according to the U.S. Department of Energy. The American Nuclear Society reported the same three drivers, framing the third as growing the U.S. fusion ecosystem and scaling up the private fusion sector by the mid-2030s.
The ASME framed the document as “a coordinated framework for federal investment in fusion research and development, identifying the critical science and technology challenges that must be addressed to move fusion from the laboratory to the commercial grid,” and noted that “achieving practical fusion energy will require advances in materials science, high-temperature systems, precision manufacturing, and plasma control,” per the American Society of Mechanical Engineers.
The roadmap was developed with input from more than 800 scientists and engineers across the public and private sectors, including more than 15 private companies, over 10 National Laboratories, and more than 70 universities, according to the U.S. Department of Energy. The American Nuclear Society reported the same contributor figures. DOE also said more than $10 billion in private investment is already advancing fusion technologies and demonstration projects, per the U.S. Department of Energy.
The finalized document follows an earlier announcement. DOE first announced the draft roadmap on October 16, 2025, when it described six core technology areas: “structural materials, plasma-facing components, confinement systems, fuel cycle, blankets, and plant engineering and integration,” according to the U.S. Department of Energy.
Dr. Darío Gil, the DOE Under Secretary for Science, said “fusion energy has entered a new era defined by extraordinary scientific progress and public-private momentum,” according to the U.S. Department of Energy. In separate remarks reported by the Fusion Industry Association, Gil described the document as “a comprehensive national strategy to accelerate the development and commercialization of fusion energy by the mid-2030s.”
The FIA also reported that the roadmap describes how the U.S. can “Leverage emerging tools, including artificial intelligence, to accelerate scientific discovery,” “Maintain U.S. leadership in a rapidly advancing global technology race,” “Strengthen energy security with a reliable, domestic energy source,” and “Accelerate economic growth by fostering new industries and high-quality jobs,” per the Fusion Industry Association.
What We Don’t Know
The roadmap stops short of committing federal money. DOE said its “ability to support the roadmap’s milestones and timelines is contingent on future public-private partnerships and future Congressional appropriations,” and that the document “is not committing DOE to specific funding levels,” according to the U.S. Department of Energy. The American Nuclear Society reported the same caveat, noting that the document does not commit the department to specific funding levels.
That leaves the mid-2030s target dependent on appropriations and partnerships that have not yet been secured, and the published materials do not detail year-by-year funding figures.
Analysis
The finalized roadmap arrives as private fusion developers report their own technical milestones. Earlier in June 2026, Commonwealth Fusion Systems published five peer-reviewed papers validating the physics of its 400 MW ARC power plant, as previously reported. DOE’s emphasis on public-private partnerships and its citation of more than $10 billion in private fusion investment signal that the federal strategy is built to complement, rather than replace, that private-sector activity, with the government positioned to bridge enabling-technology gaps the FIA said the federal role is meant to address.