Reliable power: A key part of our mission

With a service area that encompasses 104,000 square miles and more than 7 million electric customers, reliability is an everyday commitment for Duke Energy employees.

Each year, we set aggressive reliability targets for the number and duration of power outages and the performance of our power generation fleet. As we implement best practices and consistent approaches across the newly merged company, our customers should continue to expect improved reliability performance.

Power delivery

Measures used to monitor our reliability trended in the right direction during 2012, with decreases in the number and duration of power outages experienced by customers. This table reflects the combined outage history of Duke Energy and Progress Energy since 2008.


Reliable service also depends on a strong fleet of power plants. In 2012, our combined nuclear fleet’s capacity factor, which is a measure of generation reliability, was 90.4 percent, exceeding 90 percent for the 14th consecutive year.

Duke Energy’s regulated fossil fleet contributed a respectable 86.5 percent commercial availability. Former Progress Energy fossil units are not included in this measure, but will be starting in 2013. Finally, our nonregulated fossil and renewable fleets had an outstanding year, with 92.9 percent commercial availability and renewables yield.