For the second time in less than a month Dominion Virginia Power and North Carolina Power customers set a record for electricity usage, establishing a new record winter peak demand on Thursday morning when temperatures were in the single digits across much of the state.

Dominion supplied 19,784 MW of electricity to its 2.5 million customers between 7 a.m. and 8 a.m. on Thursday.  That is an increase of 54 megawatts over the previous winter peak demand record of 19,730 MW, which was set between the same hours on Jan. 7. 

Prior to that, the record one-hour peak was 18,079 MW between 7 a.m. and 8 a.m. on Feb. 6, 2007. That one-hour peak was surpassed 33 times in January.

The all-time peak demand record is a summertime mark of 20,061 MW set on July 22, 2011.  One megawatt supplies enough electricity at peak for 250 homes.