SEOUL, Sept. 23 (UPI) -- South Korean lawmakers say the country's state-run Korea Power Exchange should be held responsible for recent blackouts.
The power outages on Sept. 15 closed factories and shops, and left people trapped in elevators, Yonhap news service reported Friday.
A government investigation said unseasonably high temperatures increased electricity demand as supply had been reduced for scheduled maintenance.
Lawmakers urged the government to restructure the country's energy system.
Yonhap said power outages are rare in South Korea due to the country's highly developed electrical grid.