NOTICE DATE:  May 29, 2012

NOTICE TYPE:  M-A052912-01 Extracts

SHORT DESCRIPTION:  New bill determinant in RTM MODE extract – LPROFWTHR

INTENDED AUDIENCE:  ERCOT Market Participants

DAY AFFECTED:  June 11, 2012

LONG DESCRIPTION:  ERCOT will include a new bill determinant, LPROFWTHR, which is the LOAD BY PROFILETYPE AND WEATHER ZONE ADJ FOR UFE beginning with the June 11, 2012, posting of the Real-Time Market Market Operating Day Extract (RTM MODE). The data aggregation settlement dates to be run for the June 11, 2012, posting include:

· 6/1/2012 – Initial

· 4/13/2012 – Final

· 12/14/2011 – True-Up

ADDITIONAL INFORMATION:  The new bill determinant will be produced for all future settlement of nodal Operating Days and will reside in the DAIOUTPUTHEADER/INTERVAL tables in the RTM MODE extract.

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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dh