Constellation plans to ask the Nuclear Regulatory Commission (NRC) to extend the operating licenses of its Clinton and Dresden nuclear plants in Illinois by an additional 20 years.

If approved by the NRC, Clinton could operate until 2047 and Dresden could operate until 2049 (Unit 2) and 2051 (Unit 3). Clinton is currently licensed to operate through April 2027 and Dresden is currently licensed to operate until 2029 (Unit 2) and 2031 (Unit 3), after receiving its first NRC license renewal in 2004.

Located in Morris Illinois, the two-unit Dresden Generating Station generates close to 1,800 MW of electricity at capacity. Units 2 and 3 were put into service in the 1970s and are General Electric boiling water reactors. Unit 1 was previously retired.

Clinton Power Station, appropriately in Clinton, Illinois, also has a single GE boiling water reactor. The plant can produce up to 1,080 MW and began commercial operation in 1987.

Clinton and Dresden, along with three other Illinois plants, already receive credits under two state laws that prevented the plants’ early retirement.

In addition, the federal Inflation Reduction Act (IRA) passed in August includes a nuclear production tax credit aimed at supporting continued operation of the nation’s nuclear fleet for at least nine years.

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