NOTICE DATE:  May 25, 2012

NOTICE TYPE:  M-E052512-01 Extracts/Reports

SHORT DESCRIPTION:  Reposting of the Historical Prices reports with all price corrections from 2010 forward


DAY AFFECTED:  July 2, 2012

LONG DESCRIPTION:  The June Historical DAM Load Zone and Hub Prices report (NP4-180-ER) and the Historical RTM Load Zone and Hub Prices report (NP6-785-ER), which are due to post the first of week of July (currently estimating July 2, 2012, once validations have completed), will contain updated files for 2010, 2011 and 2012. ERCOT is rerunning the historical prices to account for all price corrections from Nodal go-live (December 1, 2010) forward. This will result in an updated posting date for the prior years’ files as well as updated data where price corrections were previously not captured within the historical prices files.

ADDITIONAL INFORMATION:  This change is related to defect 44876 that was included in the June release Market Notice (see Notice W-B052512-01). 

The Historical Prices reports are posted on the Market Prices webpage on the ERCOT website, under Historical Prices, at

CONTACT:  If you have any questions, please contact your ERCOT Account Manager. You may also call the general ERCOT Client Services phone number at (512) 248-3900 or contact ERCOT Client Services via email at [log in to unmask].

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