Lingering damage caused by Tuesday's tornadoes left about 2,700 Oklahoma homes and businesses still without electricity on Thursday evening.
The severe storms that ravaged the state earlier this week knocked out power for as many as 125,000 customers at its peak, but most of those still without electricity are expected to have it back by Friday, officials said.
Oklahoma Gas and Electric Co., the state's largest utility company, still had about 2,000 Oklahoma customers without power Thursday because of extensive damage to power lines and utility poles.
OG&E spokeswoman Karen Kurtz said crews expected to have power back to all Oklahoma City metro area customers by noon Friday at the latest, although customers in Piedmont might have to wait until Saturday because of the extent of damage there.
Oklahoma Association of Electric Cooperatives spokesman Sid Sperry said about 1,000 customers who rely on rural cooperatives still were without power Thursday.
Workers at the affected cooperatives hope to have power restored by the end of the day Friday, he said.
Sperry said 14 distribution cooperatives and one generation and distribution cooperative sustained as much as $4.5 million in damages in Tuesday's storms, which destroyed about 1,000 utility poles, 75 high voltage line structures and a substation that served a Devon Energy Corp. natural gas processing plant near Calumet.
Public Service Co. of Oklahoma reported no outages on Thursday.