The U.S. Nuclear Regulatory Commission (NRC) has approved 20-year license renewals for Constellation Energy’s Clinton Clean Energy Center and Dresden Clean Energy Center in Illinois, enabling extended operations through the late 2040s and early 2050s.

As part of the relicensing effort, Constellation Energy is investing more than $370 million in plant upgrades, including significant improvements to electrical infrastructure and transformer systems that support nuclear plant reliability and grid stability.

At the Clinton facility, two new auxiliary transformers have been installed to enhance power distribution and operational resilience, alongside new advanced equipment chillers and upgrades to the condensate polisher system. At Dresden, a newly installed main power transformer introduces enhanced electrical system monitoring and control, contributing to improved safety and long-term performance.

The approvals allow Clinton to operate through 2047 and Dresden’s reactors through 2049 and 2051, following a comprehensive NRC review of plant maintenance, equipment condition, and safety systems. According to Bryan Hanson, Executive Vice President and Chief Generation Officer at Constellation Energy, the license extensions support continued clean energy generation while preserving more than 2,200 jobs and significant tax revenues for Illinois.

While regulatory approval has been secured, Constellation noted that continued operation remains subject to each plant’s financial viability. At Clinton, long-term operations are supported by a 20-year power purchase agreement with Meta, replacing Illinois’ Zero Emission Credit program after its expiration in 2027.

Source: power-eng.com