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Overview¶

Exarep (Example Retail Electric Provider) is a fake retail electric provider (REP) in ERCOT.

Domain¶

A Retail Electric Provider (REP) operates in the deregulated Texas electricity market managed by the Electric Reliability Council of Texas (ERCOT). A REP purchases electricity on the wholesale market and sells it to retail customers, serving as the primary point of contact for all aspects of electric service.

REP responsibilities¶

Wholesale procurement — Buy electricity on the ERCOT wholesale market and manage supply costs
Customer service — Serve as the direct contact for customers, including billing, collections, and a 24-hour toll-free support line
Delivery coordination — Pay Transmission and Distribution Service Providers (TDSPs) for the delivery of electricity over poles and wires to customer premises
Retail transactions — Process enrollments, switches, and move-ins/move-outs through ERCOT's retail systems using Texas Standard Electronic Transactions (TX SET)
Settlement — Work with a Qualified Scheduling Entity (QSE) to settle wholesale financial transactions with ERCOT
Compliance — Follow all Public Utility Commission of Texas (PUCT) rules, including consumer protection regulations

How customer switching works¶

A customer contacts the new REP and signs up for service
The REP submits an enrollment transaction to ERCOT
ERCOT sends a verification letter to the customer, a notification to the TDSP, and a loss notification to the previous REP
On the switch date, the TDSP performs a meter read and sends it to ERCOT
ERCOT updates its registration database and forwards meter data to both the new and previous REP for final and initial billing

Key market participants¶

Participant	Role
ERCOT	Independent system operator, processes retail transactions
REP	Sells electricity to retail customers in competitive areas
TDSP	Manages poles, wires, meters, and ESI IDs
QSE	Settles wholesale transactions with ERCOT on behalf of the REP
PUCT	Regulates the market and enforces consumer protection rules