Hourly Load Data Archives

Find historical information on hourly loads by ERCOT control area for the years 1995-2006. Data is not available for the years 2001-2002.

Information may vary from report to report. Since April 2003, ERCOT reported on load data in its eight weather zones; prior to April 2003, ERCOT was divided into 11 control areas, and the load data was reported accordingly.

2013 ERCOT Hourly Load Data
April 10, 2013
(04/09/13, .zip, 250.2 KB)
2012 ERCOT Hourly Load Data
April 09, 2013
(04/09/13, .zip, 661.8 KB)
2011 ERCOT Hourly Load Data
July 10, 2012
(07/11/12, .zip, 864.9 KB)
2010 ERCOT Hourly Load Data
July 14, 2010
(10/05/11, .zip, 869.3 KB)
2009 ERCOT Hourly Load Data
June 10, 2009
(10/06/11, .zip, 850.6 KB)
2008 ERCOT Hourly Load Data
November 24, 2008
(03/31/11, .zip, 751.6 KB)
2007 ERCOT Hourly Load Data
January 01, 2008
(03/31/11, .zip, 306.2 KB)
2006 ERCOT Hourly Load Data
December 28, 2006
(03/31/11, .zip, 322.9 KB)
2005 ERCOT Hourly Load Data
January 01, 2006
(03/31/11, .zip, 323.3 KB)
2004 ERCOT Hourly Load Data
January 01, 2005
(03/31/11, .zip, 323 KB)
2003 ERCOT Hourly Load Data
January 01, 2004
(03/31/11, .zip, 230.3 KB)
2000 ERCOT Hourly Load Data
December 31, 2000
(11/10/05, .zip, 372.5 KB)
1999 ERCOT Hourly Load Data
December 31, 1999
(12/11/02, .zip, 372.1 KB)
1998 ERCOT Hourly Load Data
December 31, 1998
(12/11/02, .zip, 1 MB)
1997 ERCOT Hourly Load Data
December 31, 1997
(12/11/02, .zip, 206.6 KB)
1997 ERCOT Hourly Load Data
December 31, 1997
(07/26/04, .xls, 106.5 KB)
1997 ERCOT Hourly Load Data (Raw)
December 31, 1997
(07/26/04, .txt, 58.5 KB)
1996 ERCOT Hourly Load Data
December 31, 1996
(07/26/04, .txt, 209 KB)
1995 ERCOT Hourly Load Data
December 31, 1995
(07/26/04, .txt, 58.5 KB)