| MN | E002/RP-24-67 | Xcel Energy 2024-2040 Upper Midwest Integrated Resource Plan | Minnesota Public Utilities Commission | closed | 2024-02-01 |
| LA | X-36987 | Staff Investigation into the Development of Advanced Nuclear Power Technology in Louisiana | Louisiana Public Service Commission | pending | 2023-09-27 |
| AK | 18 AAC 87 | Nuclear Facility Siting Regulations (Microreactor Siting) | Alaska Department of Environmental Conservation | final rule | 2023-08-23 |
| MI | U-21358 | Nuclear Feasibility Study Workgroup (Public Act 218 of 2022) | Michigan Public Service Commission | closed | 2023-03-24 |
| SD | EL23-002 | NorthWestern Energy Request for Deferred Accounting/Regulatory Asset for Nuclear (SMR) Plant Study Costs | South Dakota Public Utilities Commission | closed | 2023-02-08 |
| CA | R.23-01-007 | SB 846 Rulemaking on Extended Operations of Diablo Canyon Nuclear Power Plant | California Public Utilities Commission | pending | 2023-01-12 |
| IN | 170 IAC 4-11 | Procedures and Guidelines for the Construction, Purchase, or Lease of Small Modular Nuclear Reactors by Public Utilities | Indiana Utility Regulatory Commission | final rule | 2023 |
| AZ | E-00000A-23-0183 | Feasibility of Advanced Nuclear Power Generation (Repository Docket) | Arizona Corporation Commission | pending | 2023 |
| PA | FRONTIER Initiative | Penn State-Westinghouse FRONTIER Initiative for eVinci Microreactor Research and Deployment | Pennsylvania State University (in partnership with Westinghouse Electric Company) - not a PUC proceeding | pending | 2022-05-01 |
| NC | E-100, Sub 179 | Duke Energy 2022 Biennial Integrated Resource Plans and Carbon Plan | North Carolina Utilities Commission | closed | 2022 |
| IN | RM 22-05 | Rulemaking to Adopt 170 IAC 4-11 Governing Certification of Small Modular Nuclear Reactors | Indiana Utility Regulatory Commission | closed | 2022 |
| NJ | ER20080557 | PSEG Nuclear Zero Emission Certificate (ZEC) Application for Salem Unit 1 | New Jersey Board of Public Utilities | pending | 2020-08-01 |
| NJ | EO18080899, EO18121337 | Establishment of the Zero Emission Certificate Program for Eligible Nuclear Power Plants (Salem/Hope Creek) | New Jersey Board of Public Utilities | final rule | 2018-08-01 |
| NY | 15-E-0302, 16-E-0270 | Clean Energy Standard ZEC Facility-Cost Determination for Ginna and Nine Mile Point | New York State Public Service Commission | final rule | 2016 |
| GA | 40161 | Georgia Power Company 2016 Integrated Resource Plan | Georgia Public Service Commission | closed | 2015-12-17 |
| NY | 15-E-0302 | Clean Energy Standard Proceeding / Zero-Emissions Credit (ZEC) Program for Upstate Nuclear | New York State Public Service Commission | pending | 2015 |
| GA | 29849 | Vogtle Units 3 and 4 Construction Monitoring and Cost Recovery | Georgia Public Service Commission | closed | 2011-12-18 |
| GA | 27800 | Certification of Plant Vogtle Units 3 and 4 (AP-1000 Reactors) | Georgia Public Service Commission | closed | 2008-08-01 |
| NC | E-7, Sub 819 | Duke Energy Carolinas Application to Recover Nuclear Generation Development Expenses (Lee Nuclear Station) | North Carolina Utilities Commission | closed | 2008 |
| OH | 08-888-EL-ORD | Rulemaking Adopting Ohio's Alternative Energy, Renewable Energy Portfolio Standard, and Energy Efficiency Rules (SB 221) | Public Utilities Commission of Ohio | final rule | 2008 |
| SC | 2007-440-E | Duke Energy Carolinas Application to Incur Nuclear Pre-Construction Costs for the William States Lee III Nuclear Station | Public Service Commission of South Carolina | closed | 2007-12-07 |
| MD | 9127 | Application of UniStar Nuclear Energy for a CPCN to Construct Calvert Cliffs Nuclear Power Plant Unit 3 | Maryland Public Service Commission | closed | 2007-11-01 |
| LA | R-29712 | Rulemaking Investigation into the Ratemaking and Generation Implications of Nuclear Construction in Louisiana | Louisiana Public Service Commission | final rule | 2007 |