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What Does the ESI ID Number on My Texas Electric Bill Mean?

Texans – When you look at your electric bill, you’ll see something called an ESI ID. An ESI ID is a unique number that identifies your electric service location. The first part of your ESI-ID represents the TDSP ‘Transmission Distribution Service Provider’.  The TDSP owns and operates the equipment/facilities to transmit and/or distribute electricity in Texas.  It is the TDSP’s responsibility to create, assign, maintain and retire, as necessary, an ESI ID to each Service Delivery Point in its respective service area.

In a deregulated electric market, like Dallas or Houston, although you can choose your Retail Electric Provider ‘REP’, your TDSP remains the same.  Regardless of which company you buy your electricity from, the ESI ID will remain the same because it identifies the TDSP and the location of the meter.

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*Certain Terms and Conditions apply. This offer is available to first-time customers only. Customers must sign up for a fixed-rate energy plan. The plan may include a monthly service fee depending on the product. Use promo code which is showing above to qualify. Rate expires at the end of the term. Canceling or changing supply service prior to the end of the fixed-rate term may subject the customer to an early termination fee based on the product details. To be eligible to receive Spark Energy rewards, customers must enroll in a fixed term plan and maintain an active Spark Energy account in good standing (no past-due balance owed) for 45 days after the beginning of service. May not be redeemed for cash. This offer is subject to change or cancellation without notice prior to customer acceptance. This offer is nontransferable and cannot be combined with any other offers. This offer applies to services areas where Spark Energy LLC is active. The offer expires on 12/31/2021. See the Terms of Service and Electricity Facts Label (applicable only for TX) at www. SparkEnergy.com for more details.
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