ARC Act of 2026
Senate Bill Would Backstop Advanced Nuclear Plant Cost Overruns With $3.6B Federal Program
Legislative Progress
Key Points
- This bill creates a new $3.6 billion program within the Department of Energy to help build advanced nuclear power plants. It aims to make these expensive projects less risky for companies by providing extra financial support if construction costs end up being much higher than expected.
- If a project's costs go over the original budget by more than 20%, the government could step in to pay for some of the extra expenses. The government would cover up to $1.2 billion per project to ensure the power plant actually gets finished and starts providing electricity to the grid.
- To qualify for this help, companies must follow strict rules, including sharing detailed construction plans and meeting with government officials every three months to report on their progress. This oversight is meant to keep projects on track and prevent wasteful spending.
- The bill also allows the government to guarantee loans that are twice as large as the original cost estimate. This gives builders more breathing room to handle the high upfront costs of building modern nuclear technology.
- By reducing the financial risk, the policy hopes to speed up the transition to reliable, carbon-free energy. It also makes it easier for military bases and certain public utility companies to partner on these new nuclear projects.
Impact Analysis
Personal Impact
The bill creates a new Accelerating Reliable Capacity Program Account within the Department of Energy's Loan Programs Office, along with a new working group and quarterly oversight meetings. DOE staff — particularly in the Loan Programs Office — would take on significant new responsibilities for reviewing project delivery plans, approving cost estimates, and conducting enhanced oversight of qualifying nuclear projects.
State Impacts
Milestones
Read twice and referred to the Committee on Energy and Natural Resources.
Sent to a congressional committee for expert review. The committee decides whether this bill moves forward.
Introduced in Senate
The bill was officially filed and given a number. It now enters the legislative queue.
Votes
No votes have been recorded for this legislation yet.
Related News
3 articlesBipartisan duo to introduce federal backstop for nuclear reactors
Senators Jim Risch (R-Idaho) and Ruben Gallego (D-Ariz.) introduced the ARC Act of 2026 to provide $3.6 billion in federal backing for over-budget nuclear reactors, aiming to mitigate financial risks for next-generation projects and maintain U.S. leadership in the global energy market.
Legislation Tied to New Nuclear Power Includes Language that Impacts Public Power
The ARC Act of 2026 authorizes $3.6 billion for a new DOE program providing cost overrun protection. The government would cover 50% of expenses exceeding 120% of the original budget, capped at $1.2 billion per project, while requiring strict quarterly progress reporting from developers.

US construction gears up for more nuclear power plant projects
As the U.S. aims to build $80 billion in new nuclear capacity, the recently introduced ARC Act of 2026 provides a $3.6 billion safety net for developers. The bill's cost-sharing framework is seen as a vital tool for contractors facing the high financial uncertainty of first-of-a-kind reactors.
Source Information
Document Type
Congressional Bill
Official Title
ARC Act of 2026
Data Sources
Sponsor
Cosponsors
(1)Analysis generated by AI. Always verify with official sources.