A set of performance indicators has been developed to enable members to exchange information and assess the performance of their plants objectively. With each member providing data on its performance, WANO members can compare their performance with that of other plants around the world. Performance indicators are mainly used as a management tool so each member can monitor its own performance and progress, set challenging goals for improvement and consistently compare performance with that of other plants or the industry.

The indicators give a quantitative indication of nuclear plant safety and reliability, plant efficiency and personnel safety. WANO members report on most of these indicators for each nuclear unit on a quarterly basis. The data is collected through the secure WANO members' Web site, trended and posted on the WANO members' Web site. Experience has shown that using performance indicators can contribute to significant improvements in plant performance. Current worldwide performance indicators are published annually, including historical trends, in a WANO Performance Indicator Tri-fold Report.