How does subsequent license renewal relate to the restart of nuclear power plants?

April 10, 2025, 7:00AMNuclear NewsGary Adkins

Gary Adkins

Subsequent license renewal (SLR) authorizes nuclear power plants to operate for an additional 20 years beyond the 60 years of the initial license (years 1–40) and the first license renewal (years 41–60). NUREG-2191, Generic Aging Lessons Learned for Subsequent License Renewal (GALL-SLR), and NUREG-2192, Standard Review Plan for Review of Subsequent License Renewal Applications (SRP-SLR), were issued in July 2017 and provide guidance for generic evaluation of plant aging management programs and reviews of SLR applications, respectively, by Nuclear Regulatory Commission staff.

The first SLR application was submitted to the NRC for review in January 2018. A total of 10 additional SLR applications addressing 20 operating units have been submitted to the NRC. Nine operating units have been approved by the NRC, and 13 units are under review. These 22 units do not have any issues, including operating experience issues, precluding them from achieving a renewed license.

NRC issues subsequent license renewal to Monticello plant

January 6, 2025, 3:00PMNuclear News
Monticello nuclear power plant in Monticello, Minn. (Photo: NRC)

The Nuclear Regulatory Commission has renewed for a second time the operating license for Unit 1 of Minnesota’s Monticello nuclear power plant.

SLR application for Summer accepted for review

October 18, 2023, 9:34AMNuclear News

The Nuclear Regulatory Commission has docketed an application from Dominion Energy South Carolina for the subsequent license renewal (SLR) of the V. C. Summer plant’s Unit 1 reactor. The action was announced in Monday’s edition of the Federal Register.

NRC issues new EIS for Turkey Point SLR, seeks public input

September 13, 2023, 9:30AMNuclear News
The Turkey Point nuclear power plant. (Photo: FPL)

The Nuclear Regulatory Commission has released for public comment a draft site-specific environmental impact statement concerning subsequent license renewal for the two reactors at Florida’s Turkey Point power plant. The EIS’s preliminary conclusion is that any environmental impacts from the continued operation of the units for a period of 20 years beyond their current expiration dates “are not so great that preserving the option of SLR for energy-planning decision-makers would be unreasonable.”

Westinghouse, Dominion ink deal for Surry steam generator replacement

May 18, 2023, 12:00PMNuclear News
Westinghouse chief executive officer Patrick Fragman meets with Dominion Energy CEO Bob Blue on May 15 in Washington, D.C. (Photo: Westinghouse)

Westinghouse Electric Company has signed a contract with Dominion Energy to design, manufacture, and deliver replacement steam generators for Virginia’s Surry plant, the nuclear technology firm announced Tuesday.

Monticello SLR application docketed

March 9, 2023, 12:02PMNuclear News
The Monticello nuclear power plant. (Photo: NRC)

The Nuclear Regulatory Commission has accepted for review Northern States Power Company’s subsequent license renewal application for its Monticello nuclear power plant. A notice of the agency’s decision, along with information on requests for a hearing in the matter, was published in the March 3 Federal Register.

Northern States Power applies for Monticello SLR

February 1, 2023, 9:30AMNuclear News
Xcel Energy’s Monticello plant.

NRC to review updated North Anna SLR report; public input sought

November 18, 2022, 9:30AMNuclear News
The North Anna nuclear power plant. (Photo: Stuartmj/Wikipedia)

The Nuclear Regulatory Commission is seeking public comment on the scope of its supplemental environmental impact statement (SEIS) concerning Dominion Energy’s subsequent license renewal (SLR) application for North Anna-1 and -2, the agency announced earlier this week.

NRC (once again) opens Turkey Point SLR environmental scoping for comment

October 10, 2022, 9:30AMNuclear News
Turkey Point nuclear plant. (Image: FPL)

The Nuclear Regulatory Commission is seeking public comment on the scope of its supplemental environmental impact statement (SEIS) on the subsequent renewed licenses for Turkey Point-3 and -4, twin pressurized water reactors operated by Florida Power & Light (FPL). It’s the second time around for both the NRC and FPL—an SLR environmental scoping process conducted in 2018 already yielded renewed licenses for Turkey Point in December 2019. According to an October 7 NRC press release, “The staff intends to examine the environmental issues the commission determined were not properly evaluated for the subsequent license renewal term, as well as any new information for Turkey Point site–specific issues.”

Southern plans second license renewal for Hatch

September 2, 2022, 7:04AMNuclear News
The twin-unit Hatch plant (Image: Southern Nuclear)

Southern Nuclear, operator of the two-unit Hatch nuclear plant, announced yesterday that it will seek subsequent license renewals (SLR) for both reactors.

NRC rescinds subsequent license renewals

March 1, 2022, 3:07PMNuclear News
Florida Power & Light’s Turkey Point nuclear plant.

In a major change to its subsequent license renewal process, the Nuclear Regulatory Commission last week ruled that reviews of SLR applications must rely on a more extensive environmental analysis than that provided by the agency’s Generic Environmental Impact Statement for License Renewal of Nuclear Plants (GEIS). According to the ruling, the GEIS, properly understood, does not cover the SLR period.

Comments requested on draft EIS for Point Beach SLR

November 10, 2021, 9:30AMNuclear News
Point Beach nuclear power plant.

The Nuclear Regulatory Commission has issued for public comment a draft environmental impact statement on NextEra Energy’s application for the subsequent license renewal of its Point Beach reactors, located in Two Rivers, Wis. Subsequent license renewal allows a reactor to operate for 20 years beyond the expiration of its original license renewal.

NRC agrees to review SLR application for St. Lucie reactors

September 30, 2021, 9:30AMNuclear News
The St. Lucie nuclear power plant.

Florida Power and Light Company is seeking to keep its St. Lucie nuclear plant in operation into the 2060s, and so far, so good: In early August, the utility submitted to the Nuclear Regulatory Commission a subsequent license renewal application for the facility’s two units, and last Friday, the NRC accepted the application for review.

NRC seeks comments on draft EIS for North Anna SLR

August 31, 2021, 4:22PMNuclear News
The North Anna nuclear power plant. Photo: Dominion Energy

The Nuclear Regulatory Commission’s draft environmental impact statement on Dominion Energy’s application for a subsequent license renewal (SLR) for North Anna’s nuclear units is now open for public comment.

FPL submits SLR application for St. Lucie

August 17, 2021, 9:30AMNuclear News
St. Lucie nuclear power plant. (Photo: D Ramey Logan)

Florida Power and Light Company, a subsidiary of NextEra Energy, has filed a subsequent license renewal application with the Nuclear Regulatory Commission for the two-unit St. Lucie nuclear power plant, seeking a second 20-year renewal of the reactors’ operating licenses.

Oconee SLR application docketed

July 29, 2021, 9:29AMNuclear News
Duke Energy’s Oconee plant, in Seneca, S.C. (Photo: Duke Energy)

The Nuclear Regulatory Commission has accepted for review the subsequent license renewal application for Duke Energy’s Oconee nuclear plant, the agency announced yesterday. The utility submitted the application for an additional 20 years of operational life for Oconee on June 7. A public version of the application (with proprietary details removed) is available on the NRC website.

Duke files SLR application for Oconee

June 23, 2021, 9:30AMNuclear News
Aerial view of Oconee Nuclear Station (Photo: ©Duke Energy)

Duke Energy has filed a subsequent license renewal (SLR) application with the Nuclear Regulatory Commission for the Oconee nuclear plant reactors, the Charlotte, N.C.–based utility announced on June 21.

North Anna license renewal arguments to be aired

January 29, 2021, 7:00AMNuclear News

An aerial view of the North Anna nuclear plant. Photo: Dominion Energy

A Nuclear Regulatory Commission Atomic Safety and Licensing Board will conduct an “oral argument” via WebEx early next month regarding a petition to hold a hearing on North Anna’s subsequent license renewal (SLR) application, the agency announced yesterday.

ASLBs conduct adjudicatory hearings on major licensing actions by the NRC. Their rulings may be appealed to the commission.

The SLR application, submitted by Dominion Energy last August, was docketed by the NRC in October. The petition objecting to it was filed in December by three antinuclear organizations—Beyond Nuclear, Sierra Club, and Alliance for Progressive Virginia.

On February 4, beginning at 2 p.m. Eastern time, the ASLB will address a rule waiver request from the groups, as well as the admissibility of their proposed contention. The board will entertain comments from representatives for the petitioners, Dominion, and NRC staff.