Bellefonte Nuclear Power Plant owned by the Tennessee Valley Authority is located in Hollywood, Alabama.

The two partially-built 1,256 megawatt (MWe) pressurized water reactors on the site were made by Babcock and Wilcox and are called a 205 design due to the number of fuel assemblies in the core. These units are of the same design as WNP-1 which is also unfinished, and as the Mulheim Karlich A reactor in Germany that operated for three years and proved the design. Unit 1 was 88% complete and Unit 2 was 58% when development was suspended in 1988 after a $6 billion investment. Subsequent asset recovery activities, along with more recent inspections of remaining equipment, resulted in BLN 1&2 now being considered approximately 55 percent and 35 percent complete, respectively. Although the construction permits were terminated on September 15, 2006, TVA is investigating completion of these first two units with operation projected to start Unit 1 in 2017 and Unit 2 in 2021. In August 2008 TVA asked the NRC to reinstate the construction permits as part of the restart evaluation. This request was granted by the NRC on February 9, 2009, albeit as a terminated application which required significant inspection of all systems to bring the license to the deferred stage. The status was upgraded January 14, 2010 to deferred.

On September 22, 2005 it was announced that Bellefonte was also selected as the site for one or two AP1000 pressurized water reactors to be called Units 3 and 4. TVA filed the necessary applications in November 2007 to begin the design and construction process. For details, see Nuclear Power 2010 Program.

In August 2009, the Tennessee Valley Authority, faced with "falling electric sales and rising costs from cleaning up a massive coal ash spill in Tennessee", trimmed plans for the potential four-unit Bellefonte nuclear plant to one reactor.

On August 20, 2010 the TVA Board of Directors authorized $248 million to continue development of the Bellefonte Unit 1. Construction is expected to resume in 2011.

The rough estimate to complete BLN 1 by itself is between $4.2 and $4.8 billion in 2010 dollars.