The Office of Fusion (OF) leads the implementation of the Fusion Science and Technology (S&T) Roadmap, driving a unified, national effort to accelerate the fusion energy race. It serves as the Department of Energy’s primary interface for all fusion stakeholders, coordinating activities across the Department and advancing innovative strategies to move basic research to commercialization. OF also ensures U.S. leadership in global fusion development through strategic international collaboration.
The Office of Science Fusion Energy Sciences program (FES) continues to oversee the scientific programs to execute the foundational science, enabling technologies, and facilities that close the gaps identified by the Fusion Science and Technology Roadmap.
OF and FES closely coordinate to seamlessly execute the Fusion S&T Roadmap and fulfill Under Secretary Gil’s vision for Fusion Science and Energy.
Fusion Roadmap
The Fusion Science & Technology (S&T) Roadmap is a comprehensive national strategy to accelerate the development and commercialization of fusion energy by the mid-2030s, structured in two parts.
Part I, released October 2025, detailed Roadmap Key Actions to implement DOE’s Build-Innovate-Grow strategy to chart the path to fusion energy.
Part II, released June 2026, dives deeper with detailed metrics and milestones that address key S&T gaps organized around the six core Challenge Areas and charts, and maps out an infrastructure pathway aligned with private-sector timelines.
The complete Roadmap aligns public and private sector efforts around clear, actionable milestones and metrics designed to enable the delivery of a U.S. fusion pilot power plant in the mid-2030s.
The Roadmap was developed with extensive input from private industry, national laboratories, and academic partners and represents a unified national blueprint for fusion.
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