In the same storm system that produced an F5 tornado that devastated Greensburg, Kan., on May 4, 2007, a severe thunderstorm disabled the Oncor Electric Delivery service area through the Dallas/Fort Worth Metroplex and surrounding areas.

The storm resulted in widespread power outages and serious damage to the North Texas electrical system. Lightning and 75 mph winds combined forces to bring down tree limbs and cause much of the outages.

At the height of the storm, Oncor had more than 300,000 homes and businesses without power. Crews worked around the clock to bring this number down to 107,500 outages by 4 p.m. the following day.

Oncor, which supplies electricity to more than 3 million homes and businesses, dispatched approximately 2,600 Oncor workers, including 950 tree-trimming employees, to restore power.

It was the fifth-worst storm experienced by the company, and initial reports estimated the damage could have taken up to a week to repair. Oncor finished all the repairs by the end of the same weekend the outages occurred.

The worst storm happened on June 1, 2004, and left 1.41 million customers without power.     EC