Exelon, one of the nation’s largest utilities, told the EPA that its effort to change a rule that has cut emissions of mercury and other toxins is “an action that is entirely unnecessary, unreasonable, and universally opposed by the power generation sector.”
Kathy Robertson, a senior manager for environmental policy at the company, said the industry long ago complied with the rule.
“And it works,” she said. “The sector has gotten so much cleaner as a result of this rule.”