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What is an ESID?
An Electric Service Identifier (often styled ESID, ESIID, or ESI ID) is a unique number assigned to a “Service Delivery Point” in Texas. The ESID is not the same as the meter number or account number for your utility, and the number is not visible on your meter. Instead, the number is tied to a physical address. There are currently over 12 million ESIDs used for residential and commercial properties in Texas.
Pro Tip: Use the tool above to find the ESID for a given address.
What Does the ESID Mean?
Pronounced “Easy ID,” every ESID is unique to a specific meter location. Each Texas 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 remaining digits of your ESID number are specific to your home or business meter, ensuring that each address has its own distinct identifier.
Why Do You Need Your ESID?
Your ESID is very useful when comparing electricity suppliers in Texas. When you choose your ideal residential energy plan, your new supplier uses your ESID for several processes.
First, they use it to pull up your meter’s historic energy usage. The amount of energy your household consumes can be used to negotiate lower energy rates in your contract. Secondly, your supplier needs the ESID number to set up electricity services to your meter.
Additionally, ESID numbers also tell you which utility company is responsible for delivering power to your home. This is particularly useful information when you’re just moving in or if you experience a power outage.
How is an ESID used?
The ESID is what electric service providers use identify your home’s specific meter, set up electrical services, and track historic energy usage. Having your ESID number handy makes it easy to take advantage of your power to choose an energy supplier and lock in a competitive rate.
How Do I Know If I Have an ESID?
85% of Texas residents live in a deregulated energy market, which are the colorful regions in the map below. Every property in deregulated regions will have an ESID number. Alternatively, if your home is in a grey area of the map, you are likely in a regulated market and will not have an ESID. All of the Texas utility companies below specifically service deregulated areas. If your local utility is not listed below, you likely live in a regulated area of Texas.
However, there are some exceptions to this. Areas serviced by municipally owned electric utilities, like Austin, or electric cooperatives, like Bell County, will need to contact them directly to determine if you have an ESID.
ESID and Energy Usage Insights
Understanding how your ESID works can help you gain control over your household’s energy consumption. By using your ESID to monitor energy usage, you can identify opportunities to reduce energy waste and lower bills.
For example, if the only months that your home’s energy use is out of control are during the summer months, it could indicate an inefficient air conditioning system. Identifying this spike in energy use can empower you to invest in an energy-efficient upgrade.
By identifying your home’s consumption patterns early, you can take steps to become more energy efficient and reduce waste. Furthermore, many Texas energy suppliers offer detailed usage reports based on your ESID that offer personalized energy-saving recommendations.
ESID Explained: Cracking the Code
- Prefix
The first two digits are always 10, an electric industry prefix.
- Department of Energy TDSP ID
The next five digits are assigned by the Department of Energy (DOE) to each Transmission and Delivery Service Provider (TDSP) in Texas.
This helps identify your local utility provider, which is assigned by address and not subject to choice.
- Unique Point of Service ID
The remaining digits are your address’s unique ID.
It helps your chosen retail electric provider verify your location, turn on electric services, and monitor your usage.
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