Catawba Units 1 and 2 are located in York, South Carolina approximately 18 miles south of Charlotte, North Carolina.  The Westinghouse PWRs are operated by Duke Power.  Duke Energy Corp. owns 38.5% of Unit 1.  North Carolina Electric Membership Corp. owns the remaining 61.5% of Unit 1.  Unit 2 is owned by North Carolina Munipical Power Agency No. 1 (75%) and Piedmont Municipal Power Agency (25%).  Unit 1 and Unit 2 are both licensed to operate until December 5, 2043.

The ISFSI for Catawba began accepting SNF in 2008 for Unit 1 and in 2009 for Unit 2 pursuant to a general license.  As of the end of 2008, 192 assemblies were stored in 8 dry casks.  The casks are manufactured by NAC International – the NAC-UMS cask system and the UMS-24 canister type.  As of the end of 2010, there was 3,900 metric tons of SNF stored at the 4 nuclear power plant sites located in the State of South Carolina — Catawba, Oconee, Robinson and Summer.