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| Fig. 1: This image shows the headquarters of the NRC. (Source: Wikimedia Commons) |
Commercial nuclear power in the United States is predominantly regulated by the Nuclear Regulatory Commission (NRC). The headquarters of the commission can be seen in figure 1. The NRC is an independent regulatory commission created by the Energy Reorganization Act of 1974. [1] In practice, NRC regulation shows up through licensing requirements and ongoing oversight aimed at protecting public health and safety. The U.S. fleet itself is large and mature: GAO reports 94 operating commercial reactors, with an average age of about 42 years. [2]
Regulation is supposed to track the entire lifecycle of a nuclear power plant. After licensing, the NRC continues oversight primarily through the Reactor Oversight Process, which relies on performance indicators and inspections; the Government Accountability Office (GAO) notes plants submit performance indicator data in quarterly reports, and indicators are measured against established thresholds tied to safety significance. [2] GAO also describes the NRC's Action Matrix as having five columns, and reports that 91 of 94 operating reactors were in Column 1 as of June 2025 (the regular oversight category). [2] Emergency planning is also a critical part of the regulatory process: NRC licensing findings for emergency preparedness are based on FEMA findings and determinations about state and local offsite plans, together with NRC's assessment of the plants onsite plans. [3] FEMAs role is defined in federal regulation as review and approval of state and local preparedness for the offsite effects of a radiological emergency at a commercial nuclear power facility, and that same FEMA regulation describes Emergency Planning Zones of about 10 miles and 50 miles. [4] Additionally, EPA standards for routine operations include public dose limits such as 25 millirem per year whole body (with companion limits of 75 millirem thyroid and 25 millirem any other organ). [5]
Overall, U.S. commercial nuclear power is regulated chiefly at the federal level by the NRC. This independent agency was created in 1974 to be an independent regulatory body. Nuclear power regulation is present for the duration of the plants lifecycle. Moreover, there are other agencies like FEMA and EPA that are involved with nuclear power regulation.
© Hayden Hamilton. The author warrants that the work is the author's own and that Stanford University provided no input other than typesetting and referencing guidelines. The author grants permission to copy, distribute and display this work in unaltered form, with attribution to the author, for noncommercial purposes only. All other rights, including commercial rights, are reserved to the author.
[1] "Energy Reorganization Act of 1974," Pub. L. 93-438, 88 Stat. 1233, 11 Oct 1974.
[2] "Nuclear Power: Nuclear Regulatory Commission Relies on Information From its Reactor Oversight Process to Ensure Safety," U.S. Government Accountability Office, GAO-25-107807, Septemper 2025.
[3] "Emergency Plans," U.S. Code of Federal Regulations, 10 CFR pt. 50.47 (2025).
[4] "Review and Approval of State and Local Radiological Emergency Plans and Preparedness," U.S. Code of Federal Regulations, 44 CFR pt. 350 (2024).
[5] "Standards For Normal Pperations," U.S. Code of Federal Regulations, 40 CFR pt. 190.10 (2024).
