Texas has suffered major disruptions to its electricity supply due to storm Uri sweeping the United States from February 14, 2021. The state's largest independent system operator, the Electric Reliability Council of Texas (ERCOT) was unable to deliver electricity to over four million customers, as extreme cold temperatures resulted in many power plants having to be shut off. ERCOT manages roughly 90 percent of Texas' electric load, serving 26 million customers. Between February 15 and 17, the difference between day-ahead forecasts for electricity demand and electricity generation was particularly pronounced.
Electricity demand, demand forecast, and generation of the Electric Reliability Council of Texas (ERCOT) in the United States from February 15 to February 24, 2021
(in megawatt hours)
Characteristic
Demand
Forecast demand
Net generation
Feb 24, 12:00 AM CST
36,170
38,304
36,485
Feb 23, 06:00 PM CST
35,153
38,117
35,185
Feb 23, 03:00 PM CST
35,117
39,011
35,139
Feb 23, 12:00 PM CST
38,517
43,582
38,713
Feb 23, 09:00 AM CST
34,655
38,759
35,003
Feb 23, 06:00 AM CST
31,861
38,259
32,167
Feb 23, 12:00 AM CST
34,747
37,945
34,849
Feb 22, 06:00 PM CST
34,239
37,890
34,242
Feb 22, 03:00 PM CST
35,534
40,684
35,536
Feb 22, 12:00 PM CST
39,557
45,520
39,707
Feb 22, 09:00 AM CST
35,307
40,925
35,312
Feb 22, 06:00 AM CST
31,129
38,291
31,711
Feb 22, 12:00 AM CST
32,145
37,531
32,426
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Electricity demand, demand forecast, and generation of the Electric Reliability Council of Texas (ERCOT) in the United States from February 15 to February 24, 2021
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EIA. (February 25, 2021). Electricity demand, demand forecast, and generation of the Electric Reliability Council of Texas (ERCOT) in the United States from February 15 to February 24, 2021 (in megawatt hours) [Graph]. In Statista. Retrieved May 13, 2025, from https://www.statista.com/statistics/934392/ercot-power-demand-and-generation/
EIA. "Electricity demand, demand forecast, and generation of the Electric Reliability Council of Texas (ERCOT) in the United States from February 15 to February 24, 2021 (in megawatt hours)." Chart. February 25, 2021. Statista. Accessed May 13, 2025. https://www.statista.com/statistics/934392/ercot-power-demand-and-generation/
EIA. (2021). Electricity demand, demand forecast, and generation of the Electric Reliability Council of Texas (ERCOT) in the United States from February 15 to February 24, 2021 (in megawatt hours). Statista. Statista Inc.. Accessed: May 13, 2025. https://www.statista.com/statistics/934392/ercot-power-demand-and-generation/
EIA. "Electricity Demand, Demand Forecast, and Generation of The Electric Reliability Council of Texas (Ercot) in The United States from February 15 to February 24, 2021 (in Megawatt Hours)." Statista, Statista Inc., 25 Feb 2021, https://www.statista.com/statistics/934392/ercot-power-demand-and-generation/
EIA, Electricity demand, demand forecast, and generation of the Electric Reliability Council of Texas (ERCOT) in the United States from February 15 to February 24, 2021 (in megawatt hours) Statista, https://www.statista.com/statistics/934392/ercot-power-demand-and-generation/ (last visited May 13, 2025)
Electricity demand, demand forecast, and generation of the Electric Reliability Council of Texas (ERCOT) in the United States from February 15 to February 24, 2021 (in megawatt hours) [Graph], EIA, February 25, 2021. [Online]. Available: https://www.statista.com/statistics/934392/ercot-power-demand-and-generation/
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