NOTICE DATE: April 14, 2010

NOTICE TYPE: R-A041210-04 FINAL: Retail Processing

SHORT DESCRIPTION: ERCOT experienced Retail Transaction processing issues on April 12, 2010 from 08:58 to 11:27.

INTENDED AUDIENCE: CRs and TDSPs

DAY AFFECTED: April 12, 2010 from 08:58 to 11:27

LONG DESCRIPTION: ERCOT experienced Retail Transaction processing issues on April 12, 2010 from 08:58 to 11:27. ERCOT has determined this Retail Processing issue was the result of a hardware failure.

At this time, all ERCOT Retail Transaction processing has been restored.

Backlogged transaction processing was completed by 17:30 on April 12, 2010.

ADDITIONAL INFORMATION: ERCOT has identified the volume and transactions that were impacted by this issue and as a result processed out of protocol. Counts by Tran Type are provided below:

Tran Type	Counts
814_03	2423
814_05	889
814_08	191
814_09	32
814_12	56
814_13	12
814_17	27
814_21	27
814_22	74
814_24	738
814_25	1006
814_28	24
814_29	143
Total	5642

ERCOT Retail Account Managers will provide a list of impacted transactions to all affected Market Participants.

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].

If you are receiving e-mail from an ERCOT distribution list that you no longer wish to receive, please follow this link in order to unsubscribe from this list: http://lists.ercot.com.

DP/DH

From: ERCOT Client Relations
Sent: Tuesday, April 13, 2010 3:56 PM
To: [log in to unmask]; [log in to unmask]; [log in to unmask]; [log in to unmask]
Cc: [log in to unmask]; [log in to unmask]; [log in to unmask]; 1 ERCOT Client Service Reps
Subject: R-A041210-03 UPDATE: Retail Processing

NOTICE DATE: April 13, 2010

NOTICE TYPE: R-A041210-03 UPDATE: Retail Processing

SHORT DESCRIPTION: ERCOT experienced Retail Transaction processing issues on April 12, 2010 from 08:58 to 11:27.

INTENDED AUDIENCE: CRs and TDSPs

DAY AFFECTED: April 12, 2010 from 08:58 to 11:27

LONG DESCRIPTION: ERCOT experienced Retail Transaction processing issues on April 12, 2010 from 08:58 to 11:27. ERCOT has determined this Retail Processing issue was the result of a hardware failure.

At this time, all ERCOT Retail Transaction processing has been restored.

Backlogged transaction processing was completed by 17:30 on April 12, 2010.

ADDITIONAL INFORMATION: ERCOT is currently performing analysis on impacted transactions and will provide a list of impacted transaction types and counts as soon as they are available.

If you are receiving e-mail from an ERCOT distribution list that you no longer wish to receive, please follow this link in order to unsubscribe from this list: http://lists.ercot.com.

DP/DH

From: ERCOT Client Relations
Sent: Monday, April 12, 2010 11:52 AM
To: [log in to unmask]; [log in to unmask]; [log in to unmask]; [log in to unmask]
Cc: [log in to unmask]; [log in to unmask]; [log in to unmask]; 1 ERCOT Client Service Reps
Subject: R-A041210-02 UPDATE: Retail Processing

NOTICE DATE: April 12, 2010

NOTICE TYPE: R-A041210-02 UPDATE: Retail Processing

INTENDED AUDIENCE: CRs and TDSPs

DAY AFFECTED: April 12, 2010 from 08:58 to 11:27

DESCRIPTION: ERCOT experienced Retail Transaction processing issues on April 12, 2010 from 08:58 to 11:27.

At this time, all ERCOT Retail Transaction processing has been restored.

Additional information will be provided as it becomes available.

If you are receiving e-mail from an ERCOT distribution list that you no longer wish to receive, please follow this link in order to unsubscribe from this list: http://lists.ercot.com.

DP/DP

From: ERCOT Client Relations
Sent: Monday, April 12, 2010 9:39 AM
To: [log in to unmask]; [log in to unmask]; [log in to unmask]; [log in to unmask]
Cc: [log in to unmask]; [log in to unmask]; [log in to unmask]; 1 ERCOT Client Service Reps
Subject: R-A041210-01 Retail Processing

NOTICE DATE: April 12, 2010

NOTICE TYPE: R-A041210-01 Retail Processing

INTENDED AUDIENCE: CRs and TDSPs

DAY AFFECTED: April 12, 2010 from 08:58 to present

DESCRIPTION: ERCOT is currently experiencing a degradation impacting Retail Transaction processing.

ERCOT is working on resolving this issue and will provide additional information as it becomes available

If you are receiving e-mail from an ERCOT distribution list that you no longer wish to receive, please follow this link in order to unsubscribe from this list: http://lists.ercot.com.

DP/DG