Retail Market SubcommitteeSeptember 09, 2009

Performance Measures2nd Quarter 2009

Transaction Comparison

2

Summary

Historical Usage Sent transactions (867_02) fell below the 98% within protocol for Standard Move-In and Priority Move-Ins. This is due to:1: a protocol calculation error on

2: duplicate 867_02 transactions sent to ERCOT.

• 867_02 transactions were forwarded within the 4 hour protocol. Only the calculation is in error.

• One TDSP sent 1,198 transactions multiple times resulting in 13,705 transactions out of protocol.

Standard Move In Received transaction (814_07) fell below the target 98% within protocol.

Priority Move-In Received transactions (814_07) fell below the target 98% within protocol.

• This is due to one CR submitting the transactions outside protocol.

3

Switches

PUC #36141 Performance Measures

Retail Market Subcommittee

  Q2 2009 Q1 2009

Transaction Qty % Qty %

814_01 239,899 - 223,625 -

814_02 13,964 100% 13,312 100%

814_03 225,877 100% 210,098 100%

814_04 225,819 100% 210,546 100%

814_05 225,376 100% 209,184 100%

814_06 105,738 99% 127,462 100%

814_07 174,390 99% 135,903 100%

867_02 Received 230,394 100% 185,005 100%

867_02 Sent 230,216 98% 184,741 99%

867_04 Sent 201,154 100% 184,846 99%

4

Standard Move-In

PUC #36141 Performance Measures

Retail Market Subcommittee

  Q2 2009 Q1 2009

Transaction Qty % Qty %

814_16 510,301 -  499,682 - 

814_17 9,970 99% 6,157 99%

814_03 500,139 99% 492,421 99%

814_04 492,605 100% 485,351 100%

814_05 491,446 100% 481,573 100%

814_06 191,640 99% 227,359 100%

814_07 243,592 97% 206,001 100%

867_02 Received 443,600 100% 336,869 100%

867_02 Sent 443,313 97% 336,471 99%

867_04 Sent 460,493 100% 443,515 99%

5

Priority Move-In

PUC #36141 Performance Measures

Retail Market Subcommittee

  Q2 2009 Q1 2009

Transaction Qty % Qty %

814_16 105,695 - 101,875 -

814_17 4,124 99% 4,892 98%

814_03 101,557 99% 96,936 99%

814_04 100,394 100% 96,314 100%

814_05 100,133 99% 95,649 100%

814_06 45,266 100% 44,051 100%

814_07 41,148 97% 33,877 99%

867_02 Received 98,681 99% 78,555 99%

867_02 Sent 98,633 97% 78,452 99%

867_04 Sent 81,804 100% 87,765 99%

6

Move-Out

PUC #36141 Performance Measures

Retail Market Subcommittee

  Q2 2009 Q1 2009

Transaction Qty % Qty %

814_24 Received 376,624 - 344,109 -

814_24 Sent 254,482 99% 239,369 99%

814_25 Received 254,551 100% 239,583 100%

814_25 Sent 375,378 100% 340,897 99%

867_03 Received 333,141 - 305,259 -

867_03 Sent 332,586 100% 302,079 99%

7

ESI ID Create/Maintain

PUC #36141 Performance Measures

Retail Market Subcommittee

  Q2 2009 Q1 2009

Transaction Qty % Qty %

814_20 Create 44,612 - 39,873 -

814_21 Create 44,596 100% 39,603 98%

814_20 Maintain 542,642 - 466,613 -

814_21 Maintain 551,110 100% 475,800 99%