LIMERICK TWP., Pa. – Major upgrades are coming to Montgomery County’s sole nuclear power plant.
Constellation Energy, the plant’s owner, today announced that the U.S. Nuclear Regulatory Commission (NRC) has approved a License Amendment Request for the Limerick Clean Energy Center’s Digital Modernization Project, a first‑of‑its‑kind upgrade across major control and protection systems that officials say will enhance reliability, diagnostic capability and cyber resilience at the facility.
The project replaces select analog instrumentation and control equipment with state‑of‑the‑art digital platforms designed to improve equipment monitoring and provide a broader range of automation to support flexibility with enhanced reliability. The upgrades will help Limerick deliver around‑the‑clock, carbon‑free electricity to power homes, businesses and new data‑driven industries, and is the first large-scale demonstration of a digital safety system upgrade at an operating U.S. nuclear plant.
“Every dollar we invest to enhance and modernize the nation’s largest nuclear fleet will pay dividends for American families and businesses by creating jobs, keeping costs down, improving reliability and adding much-needed capacity to fuel economic growth,” said Joe Dominguez, President and CEO of Constellation. “With continued support from the Department of Energy, we are investing in our workforce and new state-of-the-art technologies to power the future.”
The installation will be done in phases and is planned to occur during upcoming refueling outages.
Located along the Schuylkill River in Montgomery County, Limerick’s two nuclear units provide up to 2,317 megawatts of reliable, carbon‑free electricity, enough to power more than 1.7 million homes.