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 2009



|                            |  |                                             |                |                                          |   |                                                        |  |                                                           |              |  |   |             
|--------------------------- |  | ------------------------------------------- | -------------- | ---------------------------------------- | - | ------------------------------------------------------ |  | --------------------------------------------------------- | ------------ |  | - | ------------
|Customer Class              |  | a. Series 2004-1Transition Chargesin Effect |                | b. Series 2004-1TransitionCharges
Billed |   | c. ActualSeries
2004-1TransitionChargePaymentsReceived |  | d. Series 2004-1TransitionChargeRemittancesMade toTrustee
|                            |  |                                             |                |                                         
|Residential Service         |  | $                                           | 0.000984 / kWh |                                          | $ | 2,578,112.13                                           |  | $                                                         | 3,850,986.99 |  | $ | 3,850,986.99
|                            |  |                                             |                |                                         
|General Service Secondary   |  |                                             |                |                                          | $ | 3,451,272.35                                           |  | $                                                         | 3,421,170.20 |  | $ | 3,421,170.20
|                            |  |                                             |                |                                         
|Non-demand                  |  | $                                           | 0.000741 / kWh |                                          |   |                                                        |  |                                                           |              |  |   |             
|                            |  |                                             |                |                                         
|Demand                      |  | $                                           | 0.289 / kW     |                                          |   |                                                        |  |                                                           |              |  |   |             
|                            |  |                                             |                |                                         
|General Service Primary     |  |                                             |                |                                          | $ | 426,194.98                                             |  | $                                                         | 409,945.90   |  | $ | 409,945.90  
|                            |  |                                             |                |                                         
|Non-demand                  |  | -$                                          | 0.000294 / kWh |                                          |   |                                                        |  |                                                           |              |  |   |             
|                            |  |                                             |                |                                         
|Demand                      |  | $                                           | 0.281 / kW     |                                          |   |                                                        |  |                                                           |              |  |   |             
|                            |  |                                             |                |                                         
|High Voltage Service        |  | $                                           | 0.170 / kW     |                                          | $ | 202,640.61                                             |  | $                                                         | 224,717.58   |  | $ | 224,717.58  
|                            |  |                                             |                |                                         
|Lighting Service            |  | $                                           | 0.001258 / kWh |                                          | $ | 49,811.79                                              |  | $                                                         | 51,666.53    |  | $ | 51,666.53   
|                            |  |                                             |                |                                         
|Instantaneous Interruptible |  | $                                           | 0.157 / kW     |                                          | $ | 135,457.49                                             |  | $                                                         | 126,882.39   |  | $ | 126,882.39  
|                            |  |                                             |                |                                         
|Noticed Interruptible       |  | $                                           | 0.263 / kW     |                                          | $ | 194,981.38                                             |  | $                                                         | 179,441.84   |  | $ | 179,441.84  
|                            |  |                                             |                |                                          |   |                                                        |  |                                                           |              |  |   |             
|                            |  |                                             |                |                                         
|Total                       |  |                                             |                |                                          | $ | 7,038,470.73                                           |  | $                                                         | 8,264,811.43 |  | $ | 8,264,811.43



---

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 6th day of November, 2009.



ONCOR ELECTRIC DELIVERY COMPANY LLC,as ServicerBy:

/s/ John M. CaseyName:

John M. CaseyTitle:

Treasurer