List of Energy Regulated Cities in Texas
2 minute readMost Texans, around 85-90%, live in a city with a deregulated energy market where they have the power to choose
Home - Learning Center - The Deregulated Texas Energy Market - ESI ID Lookup: What Is My ESI ID?
< 1 minute read • Last update December 2025

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ESI ID stands for “Electric Service Identifier.” ESI IDs are unique service identification numbers assigned to every electric meter on a home or business in Texas.
ESI IDs are used to set up power at your home, when you switch providers, and measure your energy consumption.
REPs do not assign these IDs, they are created by the Electric Reliability Council of Texas (ERCOT).
There are several uses for an ESI ID:
Graham Lumley, Growth Product Manager at BKV Energy, leads digital and traditional marketing strategies, focusing on educating Texans about the state's deregulated energy market. With over 10 years of marketing experience, he creates content to help consumers understand and save on their energy bills, bringing a fresh and dynamic approach to the industry.

Most Texans, around 85-90%, live in a city with a deregulated energy market where they have the power to choose

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