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ERCOT Yearly Peak Demand Records

Last updated: Mar 27, 2025

*All records are unofficial until final settlements occur.

Year	Month	Demand (MW)
2023	August 10 (current record)	85, 508
2022	July 20	80,148
2019	August	74,820
2018	July	73,473
2016	August	71,110
2015	August	69,877
2011	August	68,379
2010	August	65,776
2009	July	63,400
2005	August	60,274
2004	August	58,531
2003	August	60,095
2000	August	57,606

How many homes can 1 MW power?

1 MW is enough to serve about 250 residential customers during ERCOT peak hours.

Where to find records

Current official records can be found in the Demand tab in the Demand and Energy Report on Helpful Resources page. The numbers for the most recent months may change slightly as additional settlements passes are completed.

How records are set

For a demand record, ERCOT use the integrated system load for the full hour. ERCOT does not count instantaneous loads for demand records. The unofficial demands reported during, or just after, an operating day are preliminary. The numbers may change slightly as the data goes through the settlement process. After a final settlement pass occurs, after several months, the numbers are set and become official.

Have a question?

Contact: media@ercot.com