EYEBISSCheck a bill

Texas electricity definition

ESI ID

Also: Electric Service Identifier, ESIID

The identifier assigned to a point of electricity delivery in the Texas retail market.

What it means

An ESI ID identifies the delivery point, not the person or the retail plan. It can help resolve service territory but should be handled as sensitive household-linked information.

Eyebiss interpretation

How the decision system uses this concept

Eyebiss does not publish full ESI IDs or send them to knowledge-page analytics.

Claim provenance: OFFICIAL_SOURCE

Commonly confused with

  • account number
  • meter number
  • service address

Related concepts

Service addressThe physical location where electricity is delivered.Transmission and distribution utilityThe company that owns or operates local electricity delivery infrastructure in a service territory.ERCOTThe independent system operator that manages the ERCOT grid and administers wholesale and retail-market functions in its region.

Sources

  1. ERCOT Retail MarketElectric Reliability Council of Texas

    ERCOT administers retail-market data and switching transactions in its region. ESI IDs identify points of delivery in retail-market transactions.

    Retrieved 2026-08-21 · ERCOT region, Texas · primary source · freshness mediumERCOT-region status alone does not establish that a particular address has retail choice.
  2. Power to Choose GlossaryPublic Utility Commission of Texas

    Official consumer definitions for EFL, REP, delivery company, kWh, contract documents, and plan charges.

    Retrieved 2026-08-21 · Texas · primary source · freshness mediumDefinitions summarize consumer concepts; controlling law and the customer's contract remain authoritative for a dispute.