Sec. 4701. Department of Energy National Security Programs

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SEC. 4701. DEPARTMENT OF ENERGY NATIONAL SECURITY PROGRAMS (In Thousands of Dollars) Program FY 2026 Request Senate Authorized Discretionary Summary by Appropriation Energy and Water Development and Related Agencies Appropriation Summary: Energy Programs Nuclear Energy 160,000 160,000 Atomic Energy Defense Activities National Nuclear Security Administration: Weapons Activities 20,074,400 21,831,587 Defense Nuclear Nonproliferation 2,284,600 2,238,653 Naval Reactors 2,346,000 2,247,000 Federal Salaries and Expenses 555,000 555,000 Total, National Nuclear Security Administration 25,260,000 26,872,240 Defense Environmental Cleanup 6,956,000 6,961,000 Defense Uranium Enrichment D&D 278,000 0 Other Defense Activities 1,182,000 1,182,000 Total, Atomic Energy Defense Activities 33,676,000 35,015,250 Total, Discretionary Funding 33,836,000 35,175,250 Nuclear Energy Safeguards and security 160,000 160,000 Total, Nuclear Energy 160,000 160,000 National Nuclear Security Administration Weapons Activities Stockpile management Stockpile major modernization B61–12 Life Extension Program 16,000 16,000 W80–4 Life extension program 1,259,048 1,259,048 SLCM-N Warhead 0 186,000 Restoration of full funding for Nuclear-Armed Sea-Launched Cruise Missile Warhead (186,000) W87–1 Modification Program 649,096 770,283 Restoration of management reserve for program stabilization (121,187) W93 806,797 781,797 Program decrease (–25,000) B61–13 49,357 49,357 Subtotal, Stockpile major modernization 2,780,298 3,062,485 Stockpile sustainment 1,720,200 1,620,200 Program decrease (–100,000) Weapons dismantlement and disposition 82,367 87,367 Realignment of improperly applied reconciliation funds (–20,000) Harvesting dismantlement for stockpile modernization (25,000) Production operations 1,020,243 1,020,243 Nuclear enterprise assurance 117,193 98,193 Realignment of improperly applied reconciliation funds (–19,000) Total, Stockpile management 5,720,301 5,888,488 Production Modernization Primary Capability Modernization Plutonium Modernization Los Alamos Plutonium Modernization Los Alamos Pit Production 982,263 982,263 21–D–512 Plutonium Pit Production Project, LANL 509,316 509,316 15–D–302 TA–55 Reinvestments Project, Phase 3, LANL 7,942 7,942 07–D–220-04 Transuranic Liquid Waste Facility, LANL 5,865 5,865 Subtotal, Los Alamos Plutonium Modernization 1,505,386 1,505,386 Savannah River Plutonium Modernization Savannah River Pit Production 75,486 75,486 21–D–511 Savannah River Plutonium Processing Facility, SRS 1,130,000 1,130,000 Subtotal, Savannah River Plutonium Modernization 1,205,486 1,205,486 Enterprise Plutonium Support 122,094 122,094 Total, Plutonium Modernization 2,832,966 2,832,966 High Explosives & Energetics High Explosives & Energetics 132,023 156,023 Realignment of improperly applied reconciliation funds (24,000) 21–D–510 HE Synthesis, Formulation, and Production, PX 0 125,000 Project Continuation (125,000) PFAS Binder Mitigation and Future Alternatives (60,000) Subtotal, High Explosives & Energetics 132,023 341,023 Total, Primary Capability Modernization 2,964,989 3,173,989 Secondary Capability Modernization Secondary Capability Modernization 770,186 1,052,186 Depleted uranium risk reduction (145,000) Realignment of improperly applied reconciliation funds (137,000) 18–D–690 Lithium Processing Facility, Y–12 0 150,000 Project Continuation (150,000) 06–D–141 Uranium Processing Facility, Y–12 0 830,000 Realignment of improperly applied reconciliation funds (830,000) Total, Secondary Capability Modernization 770,186 2,032,186 Tritium and Defense Fuels Program Tritium and Defense Fuels Program 568,384 568,384 18–D–650 Tritium Finishing Facility, SRS 0 35,000 Program increase (35,000) Total, Tritium and Domestic Uranium Enrichment 568,384 603,384 Non-Nuclear Capability Modernization Non-Nuclear Capability Modernization 221,588 190,588 Program decrease (–31,000) 26–D–511 MESA Photolithography Capability (MPC), SNL 40,000 40,000 26–D–510 Product Realization Infrastructure for Stockpile Modernization (PRISM), LLNL 15,000 15,000 Total, Non-Nuclear Capability Modernization 276,588 245,588 Capability Based Investments 177,996 153,996 Program decrease (–24,000) Warhead Assembly Modernization 34,336 34,336 Total, Production Modernization 4,792,479 6,243,479 Stockpile research, technology, and engineering Assessment Science Assessment Science 980,959 992,959 Realignment of improperly applied reconciliation funds (–97,000) Plutonium aging and mitigation; high explosives evaluation and alternate pathways development (109,000) 26–D–512 LANSCE Modernization Project (LAMP), LANL 20,000 20,000 Total, Assessment Science 1,000,959 1,012,959 Engineering and integrated assessments Engineering and Integrated Assessments 399,777 473,777 Establishment of Rapid Capabilities Development Office (12,000) Phase 1 study support (36,000) Realignment of improperly applied reconciliation funds (26,000) 26–D–513 Combined Radiation Environments for Survivability Testing, SNL 52,248 52,248 Total, Engineering and Integrated Assessments 452,025 526,025 Inertial Confinement Fusion Inertial Confinement Fusion 699,206 724,206 Enhanced facility sustainment (25,000) 26–D–514 NIF Enhanced Fusion Yield Capability, LLNL 26,000 26,000 Total, Inertial Confinement Fusion 725,206 750,206 Advanced simulation and computing 865,995 865,995 Weapons technology and manufacturing maturation 276,279 276,279 Total, Stockpile research, technology, and engineering 3,320,464 3,431,464 Academic Programs 94,000 94,000 Infrastructure and operations Operating Operations of facilities 1,722,000 1,642,000 Program decrease (–80,000) Safety and Environmental Operations 194,360 194,360 Maintenance and Repair of Facilities 920,000 1,061,000 Program decrease (–50,000) Deferred maintenance buy-down (191,000) Recapitalization 741,179 935,000 Program decrease (–31,179) Deferred maintenance buy-down (225,000) Total, Operating 3,577,539 3,832,360 Total, Infrastructure and operations 3,577,539 3,832,360 Secure transportation asset Operations and equipment 299,541 269,541 Program decrease (–30,000) Program direction 149,244 149,244 Total, Secure transportation asset 448,785 418,785 Defense nuclear security Operations and maintenance 1,245,418 1,200,418 Program decrease (–45,000) Construction:

Total, Defense nuclear security 1,245,418 1,200,418 Information Technology and Cybersecurity 811,208 658,387 Program decrease (–152,821) Legacy Contractor Pensions and Settlement Payments 64,206 64,206 Total, Weapons Activities 20,074,400 21,831,587 Total, Weapons Activities 20,074,400 21,831,587 Defense Nuclear Nonproliferation Material Management and Minimization Reactor conversion and uranium supply 63,383 63,383 Nuclear material removal and elimination 61,000 38,000 Program decrease (–23,000) Plutonium disposition 150,686 150,686 Total, Material Management and Minimization 275,069 252,069 Global Material Security International nuclear security 62,865 62,865 Radiological security 186,406 186,406 Nuclear smuggling detection and deterrence 140,601 140,601 Total, Global Material Security 389,872 389,872 Nonproliferation and Arms Control 221,008 221,008 Defense Nuclear Nonproliferation R&D Proliferation detection 269,376 269,376 Nonproliferation stewardship program 149,383 124,383 Program decrease (–25,000) Nuclear detonation detection 307,435 309,488 Restoral of orbital sensors 0 (2,053) Forensics R&D 20,460 20,460 Nonproliferation fuels development 0 0 Total, Defense Nuclear Nonproliferation R&D 746,654 723,707 Nonproliferation Construction:

U.S. Construction 18–D–150 Surplus Plutonium Disposition Project, SRS 50,000 50,000 Total, Nonproliferation Construction 50,000 50,000 Legacy contractor pensions 20,993 20,993 Nuclear Counterterrorism and Incident Response Program Emergency Management 33,122 33,122 Counterterrorism and Counterproliferation 596,878 596,878 Total, Nuclear Counterterrorism and Incident Response Program 630,000 630,000 Subtotal, Defense Nuclear Nonproliferation 2,333,596 2,287,649 Adjustments Use of prior year balances –39,574 –39,574 Cancellation of Prior Year Balances –9,422 –9,422 Total, Adjustments –48,996 –48,996 Total, Defense Nuclear Nonproliferation 2,284,600 2,238,653 Naval Reactors Naval reactors development 884,579 884,579 Columbia-Class reactor systems development 35,300 35,300 Naval reactors operations and infrastructure 703,581 703,581 Program direction 61,540 61,540 Construction: 14–D–901 Spent Fuel Handling Recapitalization Project, NRF 526,000 427,000 Program decrease (–99,000) 25–D–530 Naval Examination Acquisition Project 60,000 60,000 26–D–530 East Side Office Building 75,000 75,000 Total, Naval Reactors Construction 661,000 562,000 Total, Naval Reactors 2,346,000 2,247,000 Federal Salaries and Expenses Program direction 555,000 555,000 Total, Federal Salaries and Expenses 555,000 555,000 TOTAL, National Nuclear Security Administration 25,260,000 26,872,240 Defense Environmental Cleanup Closure sites administration 500 500 Richland River corridor and other cleanup operations 68,562 68,562 Central plateau remediation 754,259 754,259 Richland community and regulatory support 10,700 10,700 22–D–402 L–897 200 Area Water Treatment Facility 4,000 4,000 Total, Richland 837,521 837,521 Office of River Protection:

Waste Treatment Immobilization Plant Commissioning 390,415 390,415 Tank Farm Activities 923,212 923,212 Construction: 23–D–403 Hanford 200 West Area Tank Farms Risk Management Project 108,200 108,200 15–D–409 Low Activity Waste Pretreatment System 78,600 78,600 01–D–416: Waste Treatment and Immobilization Plant, RL 600,000 600,000 Subtotal, Construction 786,800 786,800 Total, Office of River Protection 2,100,427 2,100,427 Idaho National Laboratory: Idaho cleanup and waste disposition 452,242 452,242 Idaho community and regulatory support 3,779 3,779 Construction: 22–D–403 Idaho Spent Nuclear Fuel Staging Facility 2,000 2,000 22–D–402 Calcine Construction 2,000 2,000 Subtotal, Construction 4,000 4,000 Total, Idaho National Laboratory 460,021 460,021 NNSA sites and Nevada off-sites Lawrence Livermore National Laboratory 1,955 1,955 Separations Processing Research Unit 950 950 Nevada 64,835 64,835 Sandia National Laboratory 1,030 1,030 Los Alamos National Laboratory 278,288 278,288 Los Alamos Excess Facilities D&D 1,693 1,693 Total, NNSA sites and Nevada off-sites 348,751 348,751 Oak Ridge Reservation:

OR Nuclear Facility D&D 346,562 346,562 U233 Disposition Program 63,000 63,000 OR cleanup and waste disposition 75,000 75,000 Construction: 14–D–403 Outfall 200 Mercury Treatment Facility 34,885 34,885 17–D–401 On-site Waste Disposal Facility 15,050 15,050 Subtotal, Construction 49,935 49,935 OR reservation community & regulatory support 5,900 5,900 OR technology development and deployment 3,300 3,300 Total, Oak Ridge Reservation 543,697 543,697 Savannah River Site: Savannah River risk management operations 396,394 396,394 Savannah River community and regulatory support 5,317 10,317 Payment in lieu of taxes (5,000) Savannah River National Laboratory O&M 90,719 90,719 Construction: 20-D–401 Saltstone Disposal Unit #10, 11, 12 52,500 52,500 19–D–701:

SR Security Systems Replacement 708 708 Subtotal, Construction 53,208 53,208 Radioactive liquid tank waste stabilization and disposition 1,066,000 1,066,000 Total, Savannah River Site 1,611,638 1,616,638 Waste Isolation Pilot Plant Waste Isolation Pilot Plant 413,424 413,414 Construction: 21–D–401: Hoisting Capability Project 2,000 2,000 Total, Construction 2,000 2,000 Total, Waste Isolation Pilot Plant 415,424 415,424 Program direction 312,818 312,818 Program support 20,320 20,320 Safeguards and Security—Defense Environmental Cleanup 288,871 288,871 Technology development and deployment 16,012 16,012 Subtotal, Defense Environmental Cleanup 6,956,000 6,961,000 TOTAL, Defense Environmental Cleanup 6,956,000 6,961,000 Defense Uranium Enrichment D&D 278,000 0 Program Reduction (–278,000) Other Defense Activities Environment, health, safety and security Environment, health, safety and security mission support 141,908 141,908 Program direction 90,555 90,555 Total, Environment, health, safety and security 232,463 232,463 Office of Enterprise Assessments Enterprise assessments 30,022 30,022 Program direction 59,132 59,132 Total, Office of Enterprise Assessments 89,154 89,154 Specialized security activities 441,000 441,000 Legacy Management Legacy Management Activities—Defense 177,716 177,716 Program Direction 22,542 22,542 Total, Legacy Management 200,258 200,258 Defense-Related Administrative Support 214,626 214,626 Office of Hearings and Appeals 4,499 4,499 Subtotal, Other Defense Activities 1,182,000 1,182,000 Total, Other Defense Activities 1,182,000 1,182,000