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Advanced Meter Settlement Impacts September 2012 – ERCOT settling 5.6M

ESIIDs using Advanced Meter data as of 8/29/2012

Settlements as of 8/29/12 – 90% of the load in ERCOT is settled using 15-minute interval data (AMS and IDR)

Commercial Market Operations Report located at: ▪ http://www.ercot.com/calendar/2012/09/20120918-BO

D

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Adobe Acrobat Document

Oncor (approximately):Installed: 3,104,036 as of 09.30.2012

▪ Deployment Plan: ▪2010 – 929,000 meters – Complete! ▪2011 – 902,000 meters – Complete! ▪2012 – 902,000 meters

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CNP (approximately): Installed: 2,283,012 as of 07.31.2012

Deployment Plan: ▪2010 – 756,684 meters – Complete! ▪2011 –   960,327 meters – Complete! ▪2012 –   373,423 meters – Complete!

▪Deployment Complete as of 7/31/2012

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AEP (approximately): Installed: 637,543 as of 09.30.2012

Deployment Plan schedule: ▪2010 – 188,212 meters – Complete!

▪2011 –   251,571 meters – Complete!

▪2012 –   279,329 meters▪2013 – 278,280 meters

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TNMP (approximately): Installed: 64,514 as of 09.30.2012

▪ Gulf Coast Complete in Q4 2013

▪ Lewisville Q1 2014 - Q3 2014

▪ North Texas Q4 2014 - Q3 2015

▪ Central Texas Q3 2015 - Q1 2016

▪ West Texas Q2 2016 - Q3 20166

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June 20, 2012: Retail Market Subcommittee (RMS) unanimously

endorsed NOGRR100 as recommended by ERCOT and Metering Issues Taskforce

July 18, 2012: Operations Working Group (OWG) was in consensus

to recommend approval of NOGRR100 as submitted. August 15, 2012:

OWG was in consensus to recommend Impact Analysis (IA). NOGRR100 language and IA next step is ROS on 9/13/12

September 13, 2012: Reliability & Operations Subcommittee (ROS)

considerationROS Unanimously APPROVED NOGRR100 language

and IA8

Microsoft Office Word 97 - 2003 Document

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Implementation of NOGRR-100

1. NOGRR-100 titled “Extending Manual Time Error Correction Threshold” was approved by TAC in its October 4th, 2012 meeting

2. The approved language will be effective November 1, 2012.

3. ERCOT will revise the Operating Procedure to reflect the revised approved language

4. ERCOT will also send out the market notice informing the extended manual time-error initiation threshold

5. The NAESB procedure on manual Time-Error Correction was also updated (see below)

ERCOT Public

With the TAC Approval of NOGRR100 and its implementation at NAESB, ERCOT and the Market, the Metering Issues Taskforce (MITF) has completed their deliverables by resolving the market concerns and issues surrounding manual Time Error Corrections as requested by RMS therefore: MITF request that RMS “sunset” our

Taskforce!

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