The House has approved a bill granting states authority to regulate waste generated from coal burned for electricity.
Senate Republicans are again trying to push through the North Carolina legislature dozens of legislative changes they say will reduce needless regulation and aid business.
Duke Energy plans to excavate and move coal ash from a dozen more waste ponds.
The Obama administration on Friday proposed tough new standards to improve fuel efficiency and reduce carbon dioxide pollution from trucks and vans, the latest move by President Barack Obama to address global warming.
North Carolina's highest court says Duke Energy has years to clean up leaking coal ash dumps as outlined by a new state law and doesn't have to act immediately.
Duke Energy could face another fine for spreading coal ash in the groundwater near its Sutton Plant in New Hanover County.
The state fined Duke Energy $25 million for this problem in March.
North Carolina regulators say they've issued permits that will allow Duke Energy to dump coal ash into open-pit clay mines in two counties.
North Carolina officials are warning more residents living near Duke Energy's coal ash pits that it's not safe to drink or cook with their well water.
One of the federal prosecutors who supervised the criminal case over Duke Energy's coal ash pollution says he doesn't expect to file any additional charges in the case.
Duke Energy has pleaded guilty in federal court to environmental crimes and has agreed to pay $102 million in fines and restitution over years of illegal pollution leaking from coal-ash dumps at five North Carolina power plants.