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 2010



|                            |  |                                                        |                |  |                                         |   |              |                                                        |  |   |                                                           |  |  |   |              | 
|--------------------------- |  | ------------------------------------------------------ | -------------- |  | --------------------------------------- | - | ------------ | ------------------------------------------------------ |  | - | --------------------------------------------------------- |  |  | - | ------------ | 
|Customer Class              |  | a. Series 2004-1TransitionCharges inEffectMay 28, 2010 |                |  | b. Series 2004-1TransitionChargesBilled |   |              | c. ActualSeries
2004-1TransitionChargePaymentsReceived |  |   | d. Series
2004-1TransitionChargeRemittancesMade toTrustee | 
|Residential Service         |  | $                                                      | 0.000920 / kWh |  |                                         | $ | 2,758,936.42 |                                                        |  | $ | 4,128,685.69                                              |  |  | $ | 4,128,685.69 | 
|General Service Secondary   |  |                                                        |                |  |                                         | $ | 3,279,408.91 |                                                        |  | $ | 3,341,763.55                                              |  |  | $ | 3,341,763.55 | 
|Non-demand                  |  | $                                                      | 0.001351/ kWh  |  |                                         |   |              |                                                        |  |   |                                                           |  |  |   |              | 
|Demand                      |  | $                                                      | 0.248 / kW     |  |                                         |   |              |                                                        |  |   |                                                           |  |  |   |              | 
|General Service Primary     |  |                                                        |                |  |                                         | $ | 427,345.15   |                                                        |  | $ | 429,807.98                                                |  |  | $ | 429,807.98   | 
|Non-demand                  |  | $                                                      | 0.000696 / kWh |  |                                         |   |              |                                                        |  |   |                                                           |  |  |   |              | 
|Demand                      |  | $                                                      | 0.269 / kW     |  |                                         |   |              |                                                        |  |   |                                                           |  |  |   |              | 
|High Voltage Service        |  | $                                                      | 0.121 / kW     |  |                                         | $ | 136,536.51   |                                                        |  | $ | 91,984.67                                                 |  |  | $ | 91,984.67    | 
|Lighting Service            |  | $                                                      | 0.001286 / kWh |  |                                         | $ | 49,978.94    |                                                        |  | $ | 37,354.13                                                 |  |  | $ | 37,354.13    | 
|Instantaneous Interruptible |  | $                                                      | 0.140 / kW     |  |                                         | $ | 125,468.97   |                                                        |  | $ | 153,283.56                                                |  |  | $ | 153,283.56   | 
|Noticed Interruptible       |  | $                                                      | 0.228 / kW     |  |                                         | $ | 172,180.75   |                                                        |  | $ | 345,636.88                                                |  |  | $ | 345,636.88   | 
|                            |  |                                                        |                |  |                                         |   |              |                                                        |  |   |                                                           |  |  |   |              | 
|Total                       |  |                                                        |                |  |                                         | $ | 6,949,855.65 |                                                        |  | $ | 8,528,516.46                                              |  |  | $ | 8,528,516.46 | 



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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 9th day of November, 2010.



ONCOR ELECTRIC DELIVERY COMPANY LLC,as ServicerBy:

/s/ John M. CaseyName:

John M. CaseyTitle:

Vice President and Treasurer