CHATTANOOGA (WRCB) - A lot of people in the Channel 3 viewing area may have missed their alarm clock on Friday morning. A brief but massive power failure at the Chickamauga Dam caused the lights to go out overnight.

The failure occurred with a main 161,000-volt supply line coming from the Chickamauga Dam hydroelectric generation facility at 3:17 a.m. The line supplies power to six EPB substations.

That incident caused about 10,000 customers to lose power. Most people were sleeping and may have never noticed until they saw their clocks blinking on Friday morning. However, this particular line runs power to about one-third of EPB's downtown customers. Those include major hospitals and the Chattanooga-Hamilton County 911 Communications Center. No problems were reported at those location.

If someone was up late watching television, they also lost service with this outage. 

An EPB spokesman tells Channel 3 that service has since been restored.

About EPB

The Electric Power Board of Chattanooga (EPB) is owned by the city of Chattanooga. The City established EPB in 1935 as a nonprofit agency to provide electric power to the Greater Chattanooga area. Today, EPB remains one of the largest publicly owned electric power distributors in the country. EPB serves more than 169,000 homes and businesses in a 600-square-mile area that includes greater Chattanooga and Hamilton County, portions of surrounding Tennessee counties, and areas of north Georgia.

EPB uses 100% fiber network and Smart Grid technology, a next-generation electric system that includes communication capabilities designed to reduce the impact of power outages, improve response time, and allow customers greater control of their electric power usage.