Exhibit 99(a)(3)

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: December 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 |  |                                         | $ | 2,602,239.79 |                                                        |  | $ | 2,363,301.97                                              |  |  | $ | 2,363,301.97 | 
|General Service Secondary   |  |                                                        |                |  |                                         | $ | 3,163,447.36 |                                                        |  | $ | 3,786,892.59                                              |  |  | $ | 3,786,892.59 | 
|Non-demand                  |  | $                                                      | 0.001351 / kWh |  |                                         |   |              |                                                        |  |   |                                                           |  |  |   |              | 
|Demand                      |  | $                                                      | 0.248 / kW     |  |                                         |   |              |                                                        |  |   |                                                           |  |  |   |              | 
|General Service Primary     |  |                                                        |                |  |                                         | $ | 406,514.31   |                                                        |  | $ | 461,213.65                                                |  |  | $ | 461,213.65   | 
|Non-demand                  |  | $                                                      | 0.000696 / kWh |  |                                         |   |              |                                                        |  |   |                                                           |  |  |   |              | 
|Demand                      |  | $                                                      | 0.269 / kW     |  |                                         |   |              |                                                        |  |   |                                                           |  |  |   |              | 
|High Voltage Service        |  | $                                                      | 0.121 / kW     |  |                                         | $ | 128,338.70   |                                                        |  | $ | 147,946.51                                                |  |  | $ | 147,946.51   | 
|Lighting Service            |  | $                                                      | 0.001286 / kWh |  |                                         | $ | 50,390.10    |                                                        |  | $ | 65,704.04                                                 |  |  | $ | 65,704.04    | 
|Instantaneous Interruptible |  | $                                                      | 0.140 / kW     |  |                                         | $ | 126,733.31   |                                                        |  | $ | 169,994.38                                                |  |  | $ | 169,994.38   | 
|Noticed Interruptible       |  | $                                                      | 0.228 / kW     |  |                                         | $ | 163,574.14   |                                                        |  | $ | 205,264.75                                                |  |  | $ | 205,264.75   | 
|                            |  |                                                        |                |  |                                         |   |              |                                                        |  |   |                                                           |  |  |   |              | 
|Total                       |  |                                                        |                |  |                                         | $ | 6,641,237.71 |                                                        |  | $ | 7,200,317.89                                              |  |  | $ | 7,200,317.89 | 



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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 7th day of January 2011.



ONCOR ELECTRIC DELIVERY COMPANY LLC,as ServicerBy:

/s/ John M. CaseyName:

John M. CaseyTitle:

Vice President and Treasurer