The U.S. Nuclear Regulatory Commission approved Constellation Energy’s License Amendment Request for the Limerick Clean Energy Center’s digital modernization project on January 6, 2026, authorizing a $167 million investment to upgrade the plant’s digital controls, enhance reliability and diagnostic capability, and strengthen cyber‑resilience.
The upgrade is the first large‑scale demonstration of a digital safety system upgrade at an operating U.S. nuclear plant. By replacing legacy analog controls with advanced digital systems, the project will improve real‑time monitoring, accelerate fault detection, and reduce the likelihood of unplanned outages, thereby increasing the plant’s overall safety margin and operational uptime.
Constituting a key element of Constellation’s strategy to maintain a high‑capacity‑factor fleet, the modernization supports the company’s goal of delivering reliable, carbon‑free power to data‑center and other long‑term customers. The enhanced digital infrastructure also positions the plant to meet evolving regulatory expectations and to capitalize on growing demand for clean energy in the region.
The $167 million investment is part of a broader $5.1 billion commitment to Pennsylvania’s energy infrastructure, which includes new capacity and upgrades across the state. The project is supported by the U.S. Department of Energy’s Light Water Reactor Sustainability Program, underscoring federal backing for advanced nuclear technology and the expected economic benefits of job creation and reduced outage costs.
Joe Dominguez, President and CEO of Constellation, said the investment “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.” Assistant Secretary for Nuclear Energy Ted Garrish added that the upgrade “spotlights how important the ongoing operation of our current nuclear reactor fleet is to our country’s energy security.”
Analysts have maintained a strong‑buy consensus on Constellation, citing the modernization as evidence of the company’s continued investment in reliability and carbon‑free generation. The upgrade is viewed as a strategic move that reinforces Constellation’s competitive position in the clean‑energy market and supports its long‑term growth objectives.
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