Exhibit 99(a)(1)

MONTHLY SERVICERS CERTIFICATE

(TO BE DELIVERED EACH MONTH PURSUANT TO SECTION 3.01(b)(i)

OF THE SERIES 2004-1 TRANSITION PROPERTY SERVICING AGREEMENT)

ONCOR ELECTRIC DELIVERY TRANSITION BOND COMPANY LLC,

Series 2004-1 Bonds

Oncor Electric Delivery Company LLC, as Servicer

Pursuant to the Series 2004-1 Transition Property Servicing Agreement dated as of June 7, 2004 (the Series 2004-1 Transition Property Servicing Agreement) between Oncor Electric Delivery Company LLC, as Servicer, and Oncor
Electric Delivery Transition Bond Company LLC, as Issuer, the Servicer does hereby certify as follows:

SERIES 2004-1 COLLECTION PERIOD:
October 2007



|                            |  |                                             |                |                                         |   |                                                        |  |                                                           |              |  |   |             
|--------------------------- |  | ------------------------------------------- | -------------- | --------------------------------------- | - | ------------------------------------------------------ |  | --------------------------------------------------------- | ------------ |  | - | ------------
|Customer Class              |  | a. Series 2004-1Transition Chargesin Effect |                | b. Series 2004-1TransitionChargesBilled |   | c. ActualSeries
2004-1TransitionChargePaymentsReceived |  | d. Series 2004-1TransitionChargeRemittancesMade
toTrustee
|Residential Service         |  | $                                           | 0.000969 / kWh |                                         | $ | 3,314,893.76                                           |  | $                                                         | 3,975,777.45 |  | $ | 3,975,777.45
|General Service Secondary   |  |                                             |                |                                         | $ | 3,290,902.23                                           |  | $                                                         | 3,338,101.92 |  | $ | 3,338,101.92
|Non-demand                  |  | $                                           | 0.000684 / kWh |                                         |   |                                                        |  |                                                           |              |  |   |             
|Demand                      |  | $                                           | 0.264 / kW     |                                         |   |                                                        |  |                                                           |              |  |   |             
|General Service Primary     |  |                                             |                |                                         | $ | 374,764.07                                             |  | $                                                         | 403,557.58   |  | $ | 403,557.58  
|Non-demand                  |  | $                                           | 0.000309 / kWh |                                         |   |                                                        |  |                                                           |              |  |   |             
|Demand                      |  | $                                           | 0.237 / kW     |                                         |   |                                                        |  |                                                           |              |  |   |             
|High Voltage Service        |  | $                                           | 0.143 / kW     |                                         | $ | 237,609.45                                             |  | $                                                         | 234,682.59   |  | $ | 234,682.59  
|Lighting Service            |  | $                                           | 0.001230 / kWh |                                         | $ | 49,575.33                                              |  | $                                                         | 36,985.06    |  | $ | 36,985.06   
|Instantaneous Interruptible |  | $                                           | 0.148 / kW     |                                         | $ | 137,298.86                                             |  | $                                                         | 167,213.97   |  | $ | 167,213.97  
|Noticed Interruptible       |  | $                                           | 0.233 / kW     |                                         | $ | 209,649.40                                             |  | $                                                         | 207,078.33   |  | $ | 207,078.33  
|                            |  |                                             |                |                                         |   |                                                        |  |                                                           |              |  |   |             
|Total                       |  |                                             |                |                                         | $ | 7,614,693.10                                           |  | $                                                         | 8,363,396.90 |  | $ | 8,363,396.90



---

Capitalized terms used herein have their respective meanings set forth in the Series 2004-1 Transition
Property Servicing Agreement.

In WITNESS HEREOF, the undersigned has duly executed
and delivered this Monthly Servicers Certificate this 7thday of November, 2007.



ONCOR ELECTRIC DELIVERY COMPANY LLC, as
ServicerBy:

/s/ John M. CaseyName:

John M. CaseyTitle:

Treasurer