California has passed a nuclear fusion legislative package with no precedent at the state level in the United States. Senator Jerry McNerney, an engineer by training with over twenty years of experience in the energy sector, personally shepherded three separate bills through the legislative process — all of which took effect in 2025. The result is a coordinated strategy covering research, tax incentives, and industrial planning.
The first pillar is SB 80, signed by Governor Newsom on October 3, 2025. The law establishes a state financial incentive program for fusion research, with the goal of attracting private investment and coordinating the university laboratories already active across the state. Shortly before, in September, SCR 25 was adopted — a Senate resolution setting an explicit target: to have a first fusion pilot plant operational in California by the 2030s. While not a binding financial commitment, it establishes a clear policy direction. Rounding out the package is SB 86, which extends the sales and use tax exclusion program of the California Alternative Energy and Advanced Transportation Financing Authority through 2028, adding nuclear fusion to the list of eligible technologies. A tangible benefit for companies investing in this supply chain.
California is not starting from scratch. One-third of all active U.S. fusion startups are based in the state, and the Lawrence Livermore National Laboratory — located within McNerney’s own congressional district — has already achieved significant milestones in inertial confinement fusion research. The senator also introduced SB 327, which calls for the creation of a dedicated fusion data center to foster collaboration among research institutions and standardize data collected across different experiments. It is a knowledge infrastructure that was previously lacking and has now been formally added to the legislative agenda.
The groundwork had already been laid in 2023 with AB 1172 (Calderon), which tasked the state’s Energy Commission with assessing fusion’s potential in California’s energy mix. That assessment will be included in the 2027 Integrated Energy Policy Report. McNerney built on that foundation by adding operational tools rather than stopping at a study. The logic is straightforward: California wants to be the state that sets the rules for the sector before the sector exists at commercial scale.
The McNerney package comes at a time when several countries and U.S. states are racing to position themselves in the fusion space before the first commercial reactors become a reality. California has chosen to act with concrete measures — tax incentives, research centers, and dated targets — rather than statements of intent. If the timelines set by SCR 25 are met, the state could host the first fusion pilot plant in the United States within a decade. A milestone that would fundamentally reshape California’s standing in the global energy market.
