So many air conditioners were cranked up to combat Wednesday's heat and humidity that Louisville Gas and Electric and Kentucky Utilities supplied a record amount of juice.
LG&E had a peak demand of 2,852 megawatts at 3 p.m., which exceeded the previous all-time peak record of 2,834 megawatts set on Aug. 16, 2007.
KU experienced a peak demand of 4,354 megawatts at 1 p.m. that exceeded the previous summer and August peak of 4,344 megawatts set on Aug. 9, 2007. The all-time KU peak record remains 4,640 megawatts was set on Jan. 16, 2009.
Together, the systems set an all-time record of 7,175 megawatts at 3 p.m.. That topped the previous peak set on August 9, 2007.
That kind of heat causes a strain on the system, but it performed well, said Paul W. Thompson, a senior vice president, Energy Services.
Cooler temperatures lowered the demand Thursday.