East Texas customers of SWEPCO were enduring a massive power outage on Sunday evening during one of the hottest weekends of the summer.
The company said that 85,000 customers lost service at the peak of the outage, but that service has since been restored to 25,000 customers.
SWEPCO expects to restore power by late Sunday to all East Texas customers affected by outages that began Sunday afternoon.
“We’re methodically energizing our substations to ensure we can restore power to all customers (Sunday night),” said Gary Guin, SWEPCO Director of Risk & Reliability. “The SWEPCO team appreciates our customers’ patience.”
Customers who have turned off their air conditioners and appliances may turn them on again. SWEPCO has resolved voltage problems experienced earlier.
Teams of SWEPCO employees continue their work to determine the cause of Sunday’s outage. Specialists patrolled power lines by helicopter. Power lines were patrolled by helicopter. Teams are downloading data from station equipment to help the company better understand the cause of today’s event and prevent it from occurring in the future.
“SWEPCO’s power grid operated as it was designed and protected the integrity of the power lines,” the company said in an earlier statement.
Most affected were cities along the Interstate corridor, including Marshall, Longview, Gladewater and Big Sandy. More than 24,000 Longview customers were without service.
Some rural electric cooperatives were also affected. Upshur Rural Electric had 13,676 customers without power. Cherokee County Electric, Wood County and ONCOR also had related outages.
The situation affected East Texas customers as far south as Mount Enterprise and Tenaha, and north to Gilmer.
There was no immediate word on the source of the problem.