But peak demand already has outstripped that projection on both weekdays and weekends, driven in part by record heat that began in May and has not abated as of early July. Record-setting temperatures, along with population growth, are helping to drive repeated electricity demand records this summer, including at least four in June and at least two so far this month.Īs recently as May, ERCOT predicted that demand this summer would peak in mid-August at about 77,300 megawatts. Monday's peak hourly average, meanwhile, was expected - even before ERCOT late-night alert - to set a new record for power usage. Please contact the Geospatial Team at or +1-51 with questions, comments, concerns.

Three other National Weather Service sites in the Houston region also recorded new record temperatures Sunday.Īnd Texans’ peak electricity usage momentarily topped 77,400 megawatts, with the state nearly eclipsing Saturday's hourly average record for weekend usage. This GIS page contains a collection of dynamic, interactive mapping tools that provide access to the vast collection of spatial data available at the agency, as well as download links for our authoritative datasets. This map has a list of each county name indexed to a grid overlaying the state allowing for easy. Houston reached 105 degrees at Bush Intercontinental Airport Sunday afternoon, shattering the 1909 record for July 10 of 101 degrees. Includes county boundaries, major highways and county seats. The agency's announcement came after a Sunday that broke records for heat and, nearly, for electricity use. One megawatt is enough electricity to power about 200 homes on a hot summer day. The grid could have considerably less flexibility than that: ERCOT's alert projected roughly 80,200 megawatts of power generation would be available during Monday's 'tightest hour.' The agency forecasts the grid's power needs will exceed that by about 100 megawatts around 5 p.m. Such alerts are issued when ERCOT expects power reserves to fall below 2300 megawatts for 30 minutes or more, the agency said. But the agency late Sunday announced it was 'asking Texans and Texas businesses to voluntarily conserve electricity' amid another record heat wave this summer.

Ercot grid map