Senate Bill Seven: Legislation that gave customers of Texas' investor owned utilities the right to choose a retail electricity provider. (2002)

IOU: Investor Owned Utility

TDSP: Transmission Distribution Service Provider-local distribution company.

REP: Competitive Retail Electric Provider- sells electricity to customers.

AREP: Affiliated Retail Electric Provider of the local distribution company.

PUCT: Public Utility Commission of Texas.

Renewable Energy: Electricity that is made from "environmentally friendly" fuel sources, such as wind, water, biomass or solar.

Aggregator: Entity registered with PUCT to bring a group of customers together to buy electricity in bulk.

Switch: IOU customer that has switched retail electricity suppliers.

Move-In: IOU or new customer that has moved into a TDSP's service territory.

Move-Out: IOU customer that moves out of a TDSP's service territory.

POLR: Provider of Last Resort.

PTB: Price to Beat. This is an annualized average that is the most an IOU customer must pay per KWH to an AREP in a particular TDSP's service territory.

AREP must offer PTB until 2007.

AREP can not charge less than PTB until 2005 or until 40% of the customers in a particular AREP's territory switch (whichever happens sooner).

ERCOT: Electric Reliability Council of Texas

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