NOTICE DATE: March 7, 2012

NOTICE TYPE: W-B030712-01 Extracts/Reports – Wholesale

SHORT DESCRIPTION: Adding column to Generic Transmission Limits report

INTENDED AUDIENCE: ERCOT Market Participants

DAY AFFECTED: March 22, 2012

LONG DESCRIPTION: To consolidate the generic transmission limits postings, ERCOT is adding a column titled “West to North DAM” to the Generic Transmission Limits report (NP3-766-M). Currently, the Day-Ahead Market (DAM) operator manually enters this information every morning via an operator notice and that information is displayed on the Notices tab of the Market Information System (MIS). With this change, the information will be located along with the other generic transmission limit information and will no longer be found on the Notices tab of the MIS.

In addition to the new column, the existing column names in the report are being streamlined, as well.

Beginning on March 22, 2012, for Operating Day March 23, 2012, the Generic Transmission Limits report will post with the following column structure:

· Time

· North to Houston

· West to North

· West to North DAM

· Valley

ADDITIONAL INFORMATION: The Generic Transmission Limits report is located on the Grid/Transmission landing page in the Generic Transmission Limits portlet on the MIS.

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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