
ESI stands for Electrical Supply Industry and is also used to refer to an Electric Service Identifier (ESID) or Electricity Service Identifier. An ESID is a unique number assigned to a property address in Texas. It is used to identify the local utility company and electricity providers in the area.
| Characteristics | Values |
|---|---|
| Full Form | Electrical Supply Industry |
| Pronunciation | Easy I.D. |
| Other Names | ESIID, ESI ID, ESI-ID |
| Usage | Unique to a property address in Texas |
| Where to Find | Electricity bill, ESID Lookup Tool |
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What You'll Learn

ESI ID is an acronym for Electric Service Identifier
The ESID number is not found on the physical meter but can be found on your electricity bill. It is a number that begins with 10089. If you cannot locate your ESID number, there are free online tools that can help you find it. These tools are updated daily, directly from the ERCOT portal.
You may need your ESID number when shopping for a new electricity plan for your home or business. Your Retail Energy Provider (REP) will use this number to set up your new electricity service.
If you are moving your business to a new location, you can call a toll-free number to discuss options, permitting, and new service start. If the ESID lookup says "meter not found," it is likely because your service address is new construction and the meter is new. Once construction is complete, the builder will ask the local utility company to perform a new meter set.
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ESID Number is unique to each property address in Texas
An ESID (Electric Service Identifier) is a unique 17- or 22-digit number assigned to a "Service Delivery Point" in Texas. It is unique to each property address and is sometimes referred to as an ESIID, ESI ID, or ESI-ID.
The ESID is not the same as the meter number or account number for your utility, and it is not visible on your meter. Instead, the number is tied to a physical address. There are currently over 12 million ESIDs for residential and commercial properties in Texas. Each utility delivery company uses a different number sequence. For example, ESIDs for Oncor typically start with 1044, while those for CenterPoint usually begin with 10089. The rest of the ESID is specific to your home or business meter, ensuring that each address has its unique identifier.
Your ESID number is essential for setting up electricity service and tracking energy usage at your address. Energy providers use it to connect service to your meter and determine which utility company, like Oncor or CenterPoint, delivers electricity to your property. By knowing your ESID, you can take advantage of Texas' Power to Choose program to find competitive electricity rates. Since rates vary by location, your ESID ensures you receive accurate pricing for your home or business.
You can find your ESID number on your electricity bill or by using a free online ESID Lookup Tool. These tools are updated daily or multiple times a day, directly from the ERCOT database.
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ESID Lookup Tool helps find the ESID for commercial and residential meters
ESI stands for Electric Service Identifier, and it is a unique number that helps utility companies and electricity providers identify and track energy usage for accurate billing. An ESID number is typically 17 to 22 digits long and is unique to a property address.
The ESID Lookup Tool helps users find their ESID number, which is essential for enrolling in energy plans, switching providers, and metering usage. This tool is particularly useful when shopping for electricity plans, as it provides information on the utility company servicing a specific location, the type of meter, and nearby electricity providers.
Both commercial and residential meters have an ESID, and the lookup tool caters to both. By entering an address, users can easily access their ESID, which is not visible on the physical meter. This number is crucial when setting up new electricity services, ensuring accurate billing, and preventing power disruptions during provider switches.
The ESID acts as a social security number for the electric meter, providing a consistent identifier for the address, even if the account holder or electricity company changes. It helps the transmission and distribution utility (TDU) and electricity service provider accurately charge based on energy usage, preventing overcharging or undercharging.
Overall, the ESID Lookup Tool is a valuable resource for anyone looking to establish or change their electricity services, providing quick and easy access to their unique ESID number.
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ESID number is not present on the physical meter
An ESID number, or Electric Service Identifier, is a unique 17- or 22-digit number assigned to each point of electricity delivery. It is used by local utility companies to identify your house, apartment, and service territory. The ESID number is mainly used for billing and managing your account. It helps energy providers find your service location, track your energy usage, and manage your payment cycles.
The ESID number is not present on the physical meter. Instead, it can be found on your electricity bill, which begins with numbers like 10089 or 1044. Each delivery company has a different numbering system, and the ESID can be identified by the starting digits on the bill. For instance, the ESID for CenterPoint begins with 1008, Oncor with 1044, and Nueces Electric Coop with 1013.
If you are unable to locate the ESID number on your bill, you can use an online ESID Lookup Tool. These tools are updated daily, directly from the ERCOT portal, and can help you find your ESID by entering your address. Knowing your ESID number is essential when shopping for a new electricity service or switching providers. It helps verify your identity and address, and allows you to explore different options and pricing information.
It is important to distinguish between the ESID number and the electric meter number. While the ESID remains unchanged even if you replace or upgrade your meter, the meter number can change with a new meter. The meter number is usually found on the physical meter and acts as a serial number, helping the utility company with maintenance, repairs, and tracking changes.
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ESID is required when shopping for a Texas electric plan
An ESID, or Electric Service Identifier, is a unique 17- or 22-digit number assigned to your electric meter. It is essentially a social security number for your meter and is used by the local utility to identify your house, apartment, and service territory. This number remains unchanged even if you replace or upgrade your meter.
In Texas, an ESID number is helpful when shopping for electricity plans. Your energy provider will use this number to set up the electricity service to your meter. The ESID for your meter will tell you which utility company (e.g. Oncor or Centerpoint) is responsible for delivering electric service to your property. Since rates are dependent on your location, the ESID number allows you to get accurate pricing information for your home or business.
While you cannot select your utility company as it is determined by your location, you can select your
Knowing your ESID number will also let you weigh all your options before shopping for a new electricity service. It will tell you which electric companies and plans are available at your location. You can use your ESID to learn which REPs or energy suppliers can service your address. Conversely, energy companies can use your ESID to learn which utility company services your address.
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Frequently asked questions
ESI stands for Electrical Supply Industry.
An ESI ID, or Electric Service Identifier, is a unique number assigned to a property address. This is also referred to as an ESID or ESI-ID.
You can find your ESI ID on your electricity bill or by using an online ESID Lookup Tool.


























