Constellation Energy, owner and operator of the nation’s largest reactor fleet, will ask the Nuclear Regulatory Commission to extend the operating licenses of the Clinton and Dresden reactors by 20 years, the company announced Monday, adding that it expects to file license applications with the agency in 2024.

In an editorial published recently in the Chicago Tribune, the newspaper’s editorial board states, “As for the U.S., power generation from splitting atoms has declined in recent years, and more reactors are being retired than built. If you’re in Illinois, however, you’re all-in on nuclear energy—for better or worse. Gov. J.B. Pritzker has made sure of that.”

The yearlong, nail-biting drama over the fate of Exelon’s Byron and Dresden nuclear plants came to an end on Monday afternoon when the Illinois Senate gave its nod to S.B. 2408, a wide-ranging clean energy package that seeks to phase out fossil-fuel power generation in the state and place it on a path to 100 percent carbon-free energy by 2050.