What is an ESID (ESI ID) and where do I find it?
An ESID (also written ESI ID) is the Electric Service Identifier. Texas rules define it as the basic identifier assigned to each point of delivery in the systems that ERCOT, or another independent organization, manages. A bill from your retail electric provider must show it, next to your service address and account number.
What does an ESID identify?
A place, not a person.
The ESID identifies a point of delivery. That is a spot where electricity is delivered. Texas rules say it is used in the registration and settlement systems that ERCOT, or another independent organization, manages.
Where to find it on your bill
Look for a label such as "ESI ID."
Texas rules require your retail electric provider's bill to show your service address, your ESI ID, and your account number. Bills are laid out differently, so scan for the label instead of a spot on the page.
Example only. Not a real bill.
| Item on the bill | What to look for |
|---|---|
| Service address | Your street address (example: 123 Example Street, Anytown, TX) |
| ESI ID | A long number next to a label such as "ESI ID" |
| Account number | The number your retail provider gave your account |
How do I find my ESID without a bill?
Use our ESID lookup. Enter your Texas service address. It uses ERCOT's public registry data. It is free and needs no account.
Common Questions
Is an ESID the same as an ESI ID?
Yes. Same thing, two spellings. Texas rules write "ESI ID." RateCurrent usually writes "ESID."
Is an ESID the same as my account number or meter number?
No. They are separate numbers. Texas rules list the ESI ID and the account number as separate items on your bill. Read more: Is my ESID the same as my meter number or account number?
Where is the ESID on my electric bill?
Look for a label such as "ESI ID." It appears with your service address and account number. Layouts differ from bill to bill.
Can I find my ESID without a bill?
Yes. Enter your Texas service address in the ESID lookup. It uses ERCOT's public registry data.
Related Questions
- Is my ESID the same as my meter number or account number?
- How do I read my Texas electric bill?
- What is a TDU (utility) in Texas?
Want to see what is on your own bill? Check my bill. Automated estimate from your uploaded bill. Not a substitute for your actual bill; details may be misread.
Sources
- 16 TAC §25.5, Definitions (item 41, "Electric service identifier (ESI ID)"), Public Utility Commission of Texas, retrieved 2026-10-05
- 16 TAC §25.479, Issuance and Format of Bills (subsection (c)(1)(D)), Public Utility Commission of Texas, retrieved 2026-10-05
- TDSP ESI ID Extract (ERCOT data product ZP15-612, audience: Public), Electric Reliability Council of Texas, retrieved 2026-10-05