The U.S. Nuclear Regulatory Commission (NRC) is considering extending the completion dates for construction permits for the Bellefonte Nuclear Plant in Alabama. The proposed extensions would move the deadlines for completing the two units to October 1, 2021. These changes would not alter the pre-existing environmental impacts since the most disruptive construction work is already completed. The NRC has determined there's no significant impact from extending the permits, so an environmental impact statement is not needed.
Simple Explanation
The Nuclear Regulatory Commission is letting a company called the Tennessee Valley Authority have more time to finish building part of a power plant in Alabama. They checked and found this doesn't cause any new problems for the environment, so it's okay to let them take a little longer.