To provide our customers with relatively up-to-date statistics on the electric generating capacity in the United States, preliminary updates in capacity additions in new units are published monthly in Table ES3 of the Electric Power Monthly. These updates include detailed generator level data. These data will be finalized at a later date when the annual survey process is completed. Existing Electric Generating Units in the United States Existing Electric Generating Units in the United States, 2006 ( Excel format) Existing Electric Generating Units in the United States, 2005 ( Excel format) Existing Electric Generating Units in the United States, 2004 ( Excel format) Existing Electric Generating Units in the United States, 2003 ( Excel format) Electric Generating Unit Additions in the United States Electric Generating Unit Additions, 2006 ( Excel format) Electric Generating Unit Additions, 2005 ( Excel format) Planned Electric Generating Units in the United States, September 2007 through August 2008 Planned U.S. Electric Generating Units by Year, Month, Company and Plant, September 2007 – August 2008 ( Excel format) EIA Capacity Data Bases Annual Electric Generator Report-- (Form EIA-860 Database) U.S. Electricity Generating Companies Number of Plant-Generators (Existing Capacity), by Energy Source Electric Generating Companies by Name, Code, and State