LRS Progress Report and Action Plan Update

to the

Profiling Working Group

July 24, 2006

2

Progress Report

Continuing activities: Import and validate interval data cuts Investigate data gap filling and reporting

processes Project initiated to replace the NAESB

transaction server (FTP Replacement protocol to S-FTP protocol). New documentation, training and scripts will be

provided As yet no time frame.

3

Percent Recorders w/ GE 90% Data

70.0

75.0

80.0

85.0

90.0

95.0

100.0

Month/Year

Perc

en

t

ERCOT

4

Percent Recorders w/ GE 90% Data

ERCOT is preparing more detailed gap reports by TDSP to distribute monthly

ERCOT is working with each TDSP to improve completeness of data

TDSP’s are filling back gaps and providing an increasingly higher percentage of data each month.

5

Milestone Timeline

Model Building

Profile Evaluation tool complete.

Initial discussion of profile transition issue

Ratio Analysis and comparison with existing profiles using new Profile ID assignments complete.

MetrixND training complete.

ERCOT completes analysis of transition alternatives and presents recommendation to PWG

First round of profile model building complete. Evaluation combining models across weather zones complete.

Present new models to PWG.

PWG achieves consensus on profile transition and action plan.

Round 2 Sampling

Precision Analysis tool complete.

Establish accuracy requirements.

Present Round 2 sample design to PWG.

Date

05/24/06

06/28/06

07/24/06

08/30/06

Mid-Sept

09/27/06

6

Milestone Timeline continued

Model Building

Stakeholder process complete.

150 day notification completed and new models implemented.

Round 2 Sampling

Select Round 2 samples and send to TDSP’s.

Date

Early Oct

12/20/06

05/31/07