NOTICE DATE:  April 10, 2013

NOTICE TYPE:  M-B032113-02 Release - Retail

SHORT DESCRIPTION:  REMINDER - On-cycle Retail Release on 17:00 Saturday, April 20, 2013 through 00:00 Monday, April 22, 2013

INTENDED AUDIENCE:  All Market Participants

DAYS AFFECTED: 17:00 Saturday, April 20, 2013 through 00:00 Monday, April 22, 2013

LONG DESCRIPTION:  ERCOT has an on-cycle Retail Release planned for 17:00 Saturday, April 20, 2013 through 00:00 Monday, April 22, 2013

ERCOT will implement an upgrade to Retail databases.

ADDITIONAL INFORMATION:   During this outage, the following functions will be affected:

*       Market participants utilizing NAESB to send/receive transactions to/from ERCOT will NOT be able to send/receive transactions to/from ERCOT.
*       867 Transactions will NOT be forwarded during the outage.
*       997 Functional Acknowledgements will NOT be sent during the outage.
*       MarkeTrak will be unavailable for the duration of the outage.
*       Retail components of the MIS and the Retail API will not be available.
*       MPIM will not be available.
*       eService application will be unavailable on the Market Information System (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 e-mail at [log in to unmask]<mailto:[log in to unmask]>.

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