Additional nuclear powerplant shutdowns will make it harder for the United States to meet its climate goals, a new policy brief from the nonprofit Center for Climate and Energy Solutions concludes.

Further, more retirements could lead to more widespread blackouts, similar to those seen in the Northeast during 2014's polar vortex, said Bill Mohl, president of Entergy Wholesale Commodities, a division of Entergy Corp., on April 28.