NOTICE DATE: May 17, 2011

NOTICE TYPE: W-A051711-01 Extracts – Wholesale

SHORT DESCRIPTION: RTM Price Correction filename format change

INTENDED AUDIENCE: ERCOT Market Participants

DAYS AFFECTED: April 11, 2011, to current

LONG DESCRIPTION: Starting Operating Day April 11, 2011, the RTM Price Correction filename format for SCED LMP and SPP prices has changed as follows:

· RPT.000RPTID.000000000000DUNS.Price_Correction_SCED_SP_LMP_YYYYMMDD

· RPT.000RPTID.000000000000DUNS.Price_Correction_SCED_EBLMP_YYYYMMDD

· RPT.000RPTID.000000000000DUNS.SCED_Price_Correction_SPPs_YYYYMMDD

The SPP price correction for Operating Day March 25, 2011, adopted the new format of YYYYMMDD due to a reposting of the price correction file for that Operating Day.

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