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Livermore director and lawmakers point to NIF fusion gain as reason to sustain lab infrastructure
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Summary
Witnesses highlighted the National Ignition Facility's historic gain and called for investment to sustain experiments and modernize aging facilities needed to move fusion toward commercial application.
WASHINGTON — Lawmakers and the director of Lawrence Livermore National Laboratory told a House Science subcommittee that last‑decade investments in fusion facilities enabled the National Ignition Facility's historic achievement and that further investment is needed to translate that scientific milestone into continued progress and an emerging fusion industry.
Kimberly Budil, director of Lawrence Livermore National Laboratory, told the panel that "achieving a fusion ignition and energy gain at NIF in December of 2022 was a historic event, 60 years in the making. This success was only possible with that sustained support over decades." Budil said the facility now needs refurbishment: "After 15 years of service and more than 4,500 experiments, the National Ignition Facility urgently needs refurbishment. NIF sustainment, which is now underway, is an essential investment." She described the Enhanced Yield Capability project, recently granted a "critical decision 0 or mission need" by the National Nuclear Security Administration.
Representative Zoe Lofgren, the committee's ranking member, asked Budil about the Starfire Hub, a DOE Office of Science effort led by Livermore to build an inertial fusion energy ecosystem. Budil said the Starfire Hub is a community‑building effort to work with private fusion companies and train a workforce, and said the hub's initial scale is small — "it's a small effort, you know, 15 to $17,000,000, but very important as a community building effort in the beginning." She told members that companies working on inertial confinement fusion rely on Livermore's unique experimental facilities and advanced modeling tools and that many technical gaps — notably first‑wall materials and tritium fuel‑cycle work — remain.
Tom Mason, director of Los Alamos National Laboratory, added that aging research infrastructure across the lab complex threatens innovation broadly: "Many of our facilities essential for national security are outdated and in urgent need of recapitalization," he said, citing the Los Alamos Neutron Science Center and explosive research complex as examples. Mason and other witnesses pressed the committee to fund recapitalization and to pair infrastructure investment with expanded AI and computing capability to accelerate discovery.
Witnesses emphasized that ignition is a scientific milestone, not a commercial endpoint. Budil said fusion ignition “is not an endpoint. It's the beginning of our pursuit of high yield for nuclear deterrence, energy security, and scientific discovery,” and she urged continued multiyear congressional support for NIF sustainment and for research infrastructure across the national lab system.
The discussion covered both inertial and magnetic fusion, and witnesses described collaborative arrangements with private fusion firms and the role of national labs in providing test beds, materials science expertise and tritium handling research that commercial developers cannot yet duplicate. No formal decisions were taken; members requested written follow‑up on facility sustainment plans and budgets.
