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Energy Imbalance Service

An ancillary service that corrects any hourly mismatch between a transmission customer's energy supply and the demand ("load") it serves

EPA (Energy Policy Act of 1992)

The legislation passed by the US Congress requiring electric utilities to provide access to their transmission and increasing wholesale competition in order to reduce the price of electricity for all customers

ESCO (Efficiency Service Company)

An entity that enables a customer to reduce consumption, and that typically splits the cost savings

EWG (Exempt Wholesale Generator)

Under the Energy Policy Act of 1992, a wholesale generator that is exempted from certain financial and legal restrictions specified in the Public Utility Holding Company Act of 1935

Exit Fee

The price paid by a customer who switches to another electricity supplier

Externalities

Costs that are not factored into ("internalized") electricity generation, such as the environmental costs of additional pollution

Federal Energy Regulatory Commission (FERC)

the independent agency within the United States Department of Energy that regulates the transmission and wholesale sales of electricity in interstate commerce

FERC Order 888

The comprehensive rules enacted in 1996 that require open, nondiscriminatory access to transmission lines for wholesale electricity suppliers

Flexible Alternating Current Transmission Systems (FACTS)

High-speed solid-state technologies that control transmission equipment to improve reliability and increase capacity

Flow-Based Pricing

Pricing transmission based on the cost of each parallel path upon which the electric power flows

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