Table of Contents List of Acronyms and Disclaimer............................................................................3Executive Summary.................................................................................................... 5The Roadmap Strategy: Build-Innovate-Grow..............................................7Roadmap Introduction............................................................................................... 8Advancing the Mission of Supporting a Competitive Fusion Power Industry.........8Aligning Roadmap to the FESAC Long-Range Plan............................................................... 10Roadmap Structure.................................................................................................... 11The Roadmap as a Strategic Implementation Tool...................................................................11Roadmap Key Actions and Timeline..................................................................................................12Roadmap Key Actions and Strategy.................................................................................................12BUILD............................................................................................................................... 141. Deliver Fusion Science & Technology (FS&T) Infrastructure....................................... 142. Build the AI-Fusion Digital Convergence Platform............................................................20INNOVATE.....................................................................................................................243. Pursue Innovative and Transformative Research................................................................244. Advance Towards Cost-Competitive Fusion Power Plants.........................................25GROW...............................................................................................................................285. Expand Private-Public Partnership Programs........................................................................286. Seed Fusion Supply Chains.............................................................................................................307. Foster Talent by Enabling Fusion Workforce Pathways..................................................308. Leverage Advanced Nuclear R&D and Deployment..........................................................319. Support a Practical Path to Fusion Energy Adoption.......................................................3110. Provide a Path to Commercialization....................................................................................... 32Technical Metrics and Milestones (Part II).....................................................33Core Challenge Areas................................................................................................................................34Summary of key milestones across all challenge areas....................................................... 41Summary.........................................................................................................................43Bibliography.................................................................................................................. 44Appendix 1......................................................................................................................46A New Era of U.S. Fusion Energy Leadership.............................................................................46Mapping Build-Innovate-Grow Strategy to the NASEM 2021 Report.......................47Appendix 2.....................................................................................................................49Fusion Innovation Research Engine Collaborative Ecosystems....................................49 List of Acronyms GAOGovernment Accountability OfficeH3ATHydrogen-3 Advanced Technology FacilityHFTHigh-Field TokamakHHFHigh-Heat-FluxHPCHigh-Performance ComputingHTSHigh-Temperature SuperconductingHXHeat ExchangerICFInertial Confinement FusionICRHIon Cyclotron Resonance HeatingIFEInertial Fusion EnergyIFMIF-DONESInertial Fusion EnergyIMPACTIntegrated Materials Program to AccelerateChamber TechnologiesINFUSEInnovation Network for Fusion EnergyINLIdaho National LabITEPIntegrated Tokamak Exhaust andPerformanceITERInternational Thermonuclear ExperimentalReactorJETJoint European TorusKITKarlsruhe Institute of TechnologyKrFKrypton FluorideKSTARKorea Superconducting TokamakAdvanced ResearchLANLLos Alamos National LaboratoryLCLSLinac Coherent Light SourceLEAPSLeading-edge Advancement for EnergyPower SolutionsLIBERTILithium Breeding Tritium InnovationFacilityLLELaboratory for Laser EnergeticsLLNLLawrence Livermore National LaboratoryLMCELiquid Metal Core-EdgeLPILaser-Plasma InteractionLTXLiquid Tokamak ExperimentMAST-UMega Amp Spherical Tokamak UpgradeMECMatter in Extreme ConditionsMFEMagnetic Fusion EnergyMHDMagnetohydrodynamicsMIBLMich