Oncor ESI-ID Lookup
Find your Oncor ESID by address using our free lookup tool. All Oncor ESI-IDs begin with the prefix 1017699 and cover Dallas, Fort Worth, and surrounding North, Central, and West Texas.
About Oncor Electric Delivery
Oncor Electric Delivery is the largest electric distribution utility in Texas, serving more than 10 million customers across a 120,000 square-mile service territory. Oncor delivers electricity for retail electric providers throughout North, Central, and West Texas, including the Dallas-Fort Worth metroplex.
Oncor is a Transmission and Distribution Utility (TDU) — it owns and maintains the power lines, poles, and meters in its territory but does not sell electricity directly to consumers. In the deregulated Texas electricity market, you choose your Retail Electric Provider (REP) while Oncor handles the physical delivery of electricity to your address.
Understanding Your Oncor ESI-ID
Every Oncor ESI-ID is a 17-digit number that follows this structure:
Identifies Oncor as your utility
Unique to your specific meter location
If the ESI-ID returned by our lookup tool does not start with 1017699, it means your address is served by a different utility. This can happen in boundary areas where service territories overlap.
Finding Your ESI-ID on Your Oncor Bill
On your Oncor delivery charges statement, your ESI-ID appears in the "Service Information" or "Account Details" section, usually labeled "ESI ID" or "ESID". It is a 17-digit number starting with 1017699.
If you don't have a recent bill available, the fastest way to find your ESI-ID is to enter your address in the lookup tool above. You can also call Oncor directly at 1-888-313-4747 and they can look up your ESI-ID by address.
Oncor Service Area
Oncor delivers electricity to Dallas, Fort Worth, and surrounding North, Central, and West Texas. Major cities and communities in the Oncor service territory include:
- Dallas
- Fort Worth
- Arlington
- Plano
- Garland
- Irving
- Grand Prairie
- McKinney
- Frisco
- Denton
- Lewisville
- Carrollton
- Richardson
- Allen
- Flower Mound
- Grapevine
- Euless
- DeSoto
- Rowlett
- Wylie
- Rockwall
- Mesquite
- Mansfield
- North Richland Hills
- Waco
- Killeen
- Temple
- Midland
- Odessa
- Wichita Falls
- Abilene
- San Angelo
- Tyler
- Nacogdoches
Not sure if your address is in the Oncor territory? Enter it in the lookup tool above — the results will show which TDU serves your location based on the ESI-ID prefix.
Reporting a Power Outage to Oncor
Power outages are handled by your TDU, not your retail electric provider. To report an outage to Oncor:
- By phone: Call 1-888-313-4747 (available 24/7)
- Online: Visit the Oncor outage tracker
Having your ESI-ID ready when you call helps Oncor locate your meter and dispatch crews faster.
Oncor ESI-ID FAQ
How do I find my Oncor ESI-ID?
Enter your Dallas / Fort Worth address in the lookup tool above to instantly find your ESI-ID. All Oncor ESI-IDs start with 1017699. You can also find it on your electricity bill or by calling Oncor at 1-888-313-4747.
What is the Oncor ESI-ID prefix?
The Oncor ESI-ID prefix is 1017699. Every meter in the Oncor service territory has an ESI-ID that begins with these 7 digits.
Where is the ESI-ID on my Oncor bill?
On your Oncor delivery charges statement, your ESI-ID appears in the "Service Information" or "Account Details" section, usually labeled "ESI ID" or "ESID". It is a 17-digit number starting with 1017699.
What cities does Oncor serve?
Oncor delivers electricity to Dallas, Fort Worth, and surrounding North, Central, and West Texas. Major cities include Dallas, Fort Worth, Arlington, Plano, Garland, Irving, Grand Prairie, McKinney, Frisco, Denton, Lewisville, Carrollton, Richardson, Allen, Flower Mound, Grapevine, Euless, DeSoto, Rowlett, Wylie, Rockwall, Mesquite, Mansfield, North Richland Hills, Waco, Killeen, Temple, Midland, Odessa, Wichita Falls, Abilene, San Angelo, Tyler, Nacogdoches.
My address is in Dallas but the ESI-ID doesn't start with 1017699. Why?
Utility service territories don't always follow city boundaries exactly. Some addresses within a city may be served by a different TDU, especially in boundary areas. The ESI-ID prefix tells you definitively which utility serves your specific address.
How do I switch electricity providers in the Oncor area?
To switch providers, you'll need your ESI-ID (find it above) and your new plan details. Your new retail electric provider handles the switch — Oncor continues delivering the electricity regardless of which provider you choose. Compare Texas electricity rates to find the best plan.
Other Texas Utility ESI-ID Lookups
Not in the Oncor service area? Find your ESI-ID by selecting your utility below.