The US Nuclear Regulatory Commission (NRC) has issued an order, with the four-member Commission acting in its appellate capacity, holding that power reactor licensees applying for Subsequent License Renewal (SLR), and the NRC Staff reviewing such applications, may rely on the environmental impact analyses and conclusions in the NRC’s Generic Environmental Impact Statement (GEIS) for License Renewal of Nuclear Plants. Environmental activists had challenged the applicability of these conclusions in the SLR context. The Commission’s ruling is a positive development for the nuclear power industry, particularly for current and future SLR applicants.