North Carolina Gov. Roy Cooper says he’s against the decision by President Donald Trump’s administration to replace rules that sought to limit coal-fired plants in the nation’s electrical grid and their emissions.

Cooper’s office says the Democratic governor has “deep concern” over the Environmental Protection Agency’s action to eliminate the Clean Power Plan championed by then-President Barack Obama. The rule signed Wednesday gives states more leeway deciding whether to require plants to make limited efficiency upgrades.

Cooper said in a news release the rollback could allow coal-fired plants to pollute more.

The governor has been pressing for lower greenhouse gas emissions and renewable energy industry expansion in the state. He signed an executive order last year that aims to reduce emissions statewide and make state government more energy-smart.