After several decades of widespread stagnation, nuclear power has attracted renewed interest in recent years. New license applications for 30 reactors have been announced in the United States, and another 548 are under construction, planned, or proposed around the world. In the United States, interest appears driven, in part, by tax credits, loan guarantees, and other incentives in the 2005 Energy Policy Act, as well as by concerns about carbon emissions from competing fossil fuel technologies.