Need your Texas ESID number? Our free ESID lookup tool instantly finds your 17-digit Electric Service Identifier by address. Essential for switching providers, setting up service, or comparing electricity rates across Texas utility territories including Oncor and CenterPoint Energy.
Enter your complete Texas address for immediate ESID verification
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The Electric Service Identifier system in Texas uniquely identifies each metered electricity connection point. Every property in the deregulated Texas market has a unique ESIID, which functions as your connection's digital fingerprint in the ERCOT system.
Looking for your CenterPoint ESID number in Houston? Our tool integrates with Houston's electricity database to provide instant ESIID verification. CenterPoint ESIDs typically begin with "1008" and are required for all service changes in the Houston area.
Oncor customers in Dallas: Check your smart meter's front panel for the 17-digit number labeled as "ESI ID" or use our tool above for instant verification. Oncor manages approximately 10 million ESIDs across North Texas with identifiers starting with "1044."
Your Electricity Service Identifier (ESID) serves multiple critical functions in the Texas electricity market. This unique identifier is essential for provider switches, service activations, billing accuracy, and outage management in the ERCOT system.
Most Texas providers like Reliant Energy place the ESID in the header or account summary section of your bill. TXU Energy typically displays it near your account number, while Green Mountain Energy includes it in the service address details section of your monthly statement.
Use our ESID lookup by address tool above. Alternatively, you can retrieve your ESID by logging into your provider's online account portal, reviewing your welcome kit documentation, or contacting your Transmission Distribution Utility (TDU) directly with your service address information.
While ESIID is primarily a Texas concept, other states have similar identification systems for electricity meters. Find information for your specific state below:
Texas uses the 17-digit ESIID system across all deregulated areas including Houston, Dallas, and other major cities.
New York uses a different system called "Account Number" that serves a similar purpose to the Texas ESIID.
California utilizes Service Account Numbers (SANs) instead of ESIDs for utility service identification.