The largest nuclear utility in the country says it will work to keep its nuclear fleet open to face the challenge of climate change, while fighting bad federal and state policies that could force its zero-emission power plants to close.

“For the good of our employees, our customers, our communities and the climate, we will keep working for solutions in all of our states to preserve zero-carbon nuclear generation and promote the advancement of clean energy,” said Chris Crane, Exelon Corp.’s president and CEO. “But where we can’t see a path to sustained profitability, we have no choice but to shut down plants.”