ESID lookup — find your Texas ESID number in seconds
Every electric meter in deregulated Texas has a unique ESID (Electric Service Identifier). Providers and brokers need it to quote you accurately and switch you safely. Search 13+ million meters from the ERCOT public extract by ZIP code and street address — free, no sign-up.
- 13M+
- Texas meters searchable
- Free
- No sign-up, no email required
- 6
- TDSP utility territories covered
ESID lookup
ZIP code required — add a street address to narrow it down.
Data source: ERCOT public TDSP ESIID extract. Provided for informational purposes only — always confirm the ESID with your TDSP (utility) or retail electric provider before signing a contract.
Reverse lookup — ESID to address
Have an ESID number? Find the service address it belongs to.
What is an ESID?
An ESID — Electric Service Identifier, also written ESI ID or ESIID — is the unique number that identifies a single electric delivery point in the deregulated Texas market. ERCOT and your local utility (the TDSP) use it to track exactly which meter location a contract, a switch request, or a usage history belongs to.
Most Texas ESIDs are 17 digits long; some territories use a 22-digit format. The number encodes the utility that serves the premise — for example, ESIDs beginning 104 are Oncor territory and those beginning 1008901 are CenterPoint territory.
The key thing to understand: the ESID identifies the premise, not the customer and not the hardware. It stays the same when tenants change, when you switch retail electric providers, and even when the utility replaces the physical meter.
17 or 22 digits
Always numeric, always unique. One ESID per delivery point — a business with six meters has six ESIDs.
Tied to the premise
It belongs to the service address, not to you. Move out, switch providers, replace the meter — the ESID stays.
Issued in ERCOT
ESIDs exist in the deregulated, customer-choice areas of Texas managed by ERCOT — roughly 90% of the state's load.
How to find your ESID on your electricity bill
- 1
Grab any recent electricity bill
Every retail electric provider (REP) in Texas is required to print the ESID on the bill. Paper or PDF both work.
- 2
Find the service address block
The ESID is almost always printed next to or directly below your service address — the address where the power is delivered, not the billing address.
- 3
Look for "ESI ID", "ESID" or "ESIID"
Providers label it slightly differently, but it is always a long number — 17 digits for most of Texas, 22 digits in some territories.
- 4
No bill handy? Use the lookup above
Search your ZIP code and street address and copy the ESID straight from the ERCOT extract.
The six Texas TDSPs — and how to reach them
Your TDSP (Transmission and Distribution Service Provider) is the regulated utility that owns the poles, wires and meters where you are. You cannot choose it — it is set by your address — but it shows up on every bill as delivery charges, and it can confirm your ESID from a service address.
Oncor Electric Delivery
Dallas–Fort Worth metroplex and much of North, Central & West Texas
ESIDs start with 104
888-313-4747Texas-New Mexico Power (TNMP)
Pockets statewide — including parts of Lewisville, League City and West Texas
17-digit format
888-866-7456Lubbock Power & Light
Lubbock (joined the deregulated market in 2024)
Newest ERCOT territory
806-775-2509TDSP delivery charges are regulated — but billing errors happen, and they are one of the four things we check in every free Energy Health Check.
ESID vs meter number — they are not the same thing
The two numbers sit near each other on your bill and get confused constantly. When a provider, broker, or consultant asks for "the number for your location," they want the ESID.
ESID
- • Identifies the service point — the premise where power is delivered
- • 17 or 22 digits, assigned within ERCOT
- • Never changes — survives meter swaps, provider switches and new occupants
- • What providers use to pull usage history and enroll you
Meter number
- • Identifies the physical device on the wall
- • Printed on the meter face itself, format varies by manufacturer
- • Changes whenever the utility replaces the meter
- • Used by the utility for field service, not for switching
Why your ESID matters when switching electricity providers
In deregulated Texas you choose your retail electric provider (REP), but the wires company — your TDSP — is fixed by location. Every quote, enrollment and switch is processed against an ESID, so having it to hand does three things:
- Accurate pricing. A REP or consultant can pull the exact usage history for your ESID from the utility, so the quote reflects your real load shape — not an estimate. For commercial accounts this is the difference between a guess and a properly structured contract.
- No mis-switches. Street addresses are ambiguous — suites, units and rural routes get tangled. The ESID is not. Quoting it ensures the right meter is enrolled, and only that meter.
- Multi-site control. Businesses with several locations have one ESID per meter. Listing them all up front lets you co-terminate contracts and buy the whole portfolio at once — a core part of long-term energy planning.
New to the jargon? Our Texas energy glossary covers ESID, TDSP, 4CP, demand charges and the rest of the alphabet soup in plain English.
Commercial energy help, city by city
Found your ESID and wondering what your business should pay? We work across deregulated Texas — here is how we help in the cities we know best.
ESID lookup — frequently asked questions
Quick answers about ESID numbers, TDSPs and this free lookup tool.
Found your ESID? Put it to work.
Send us one recent energy bill and a UPG advisor will run your free Energy Health Check — TDSP delivery charges, contract terms, overcharge reclaim and renewal savings — with a written summary back to you. No cost, no obligation.