Nuclear Subsequent License Renewal

Advancing Reliable Energy for the Future

Our country is embarking on the largest energy transition in U.S. history. To help ensure grid reliability and affordability, it is essential that we use all available energy resources, including renewables, hydrogen-capable natural gas and nuclear power.  

Renewing the licenses of our nuclear plants will provide a secure source of reliable, always-on, cost-competitive power for our customers for years to come.

Duke Energy’s Nuclear Fleet

Duke Energy operates the largest regulated nuclear fleet in the country. Our plants are expertly maintained for safe operation and reliability. Obtaining subsequent (or second) renewed licenses for our nuclear plants provides Duke Energy the opportunity to operate them through midcentury.

Today, Duke Energy’s nuclear fleet delivers more than 50% of our customers’ energy in the Carolinas – more than 96% of the company’s carbon-free generation. These six nuclear power plants (11 units) in the Carolinas generate carbon-free, reliable electricity, as well as support well-paying jobs, significant tax revenues and many other benefits for our communities.

What Is the Process?

The nuclear license renewal process, governed by the U.S. Nuclear Regulatory Commission (NRC), proceeds along two tracks – a safety review and an environmental review. 

To begin the process, Duke Energy develops an application containing the technical details for both the safety review and the environmental review and submits that application to the NRC. The NRC reviews the application details and verifies its evaluations through audits and inspections. At the completion of this thorough process, a renewed license can be issued.

The NRC's regulatory model for license renewal has proved effective in ensuring plant safety beyond the original 40-year nuclear plant license. This model provides both the regulatory and scientific bases necessary for continued safe operations.

Current Status

Duke Energy’s nuclear plants are good candidates for subsequent license renewal. We intend to pursue second license renewals for all 11 units we operate at six plant sites in the Carolinas. Securing these subsequent licenses will allow us to operate our nuclear plants for up to 80 years, helping to ensure continued energy production and reliability.

We submitted our first subsequent license renewal application for Oconee Nuclear Station in Seneca, S.C. The station has three generating units that produce more than 2,500 megawatts of clean, reliable energy for customers. 

The NRC issued Oconee Nuclear Station’s renewed subsequent license on March 31, 2025. The renewed subsequent license allows Oconee to operate through 2053-54.

Duke Energy’s largest nuclear plant receives approval to extend operations; supports growing energy demand, helps keep customer costs as low as possible.

We intend to submit Robinson Nuclear Plant’s subsequent license renewal application in 2025.

How Do I Get Involved?

The NRC offers opportunities for public involvement in nuclear licensing activities. The public has the chance to participate in the NRC’s decision-making process, particularly when it comes to license renewals. The review process guidance is based on both NRC perspectives and industry experience.

Read more about how you can get involved through the NRC.