This report is the thirty-fifth in the IAEA’s series of annual reports on operating experience with nuclear power stations in Member States. It is a direct output from the IAEA’s Power Reactor Information System (PRIS) and contains data on electricity production, overall plant operating performance and plant outage during 2003 for individual plants. In addition to annual performance data and outage information, the report contains a historical summary of performance and outages during the lifetime of individual plants and figures illustrating worldwide performance and statistical data.