A - F

Any commercial, industrial or retail consumer of electricity

"is, by common definition, equal to the additional costs that would be incurred to produce an additional unit of electricity sold in the market. As long as sufficient supplies exist, the competitive price is roughly proportional to the fuel costs required...

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

A condition that restricts the ability to add or substitute one source of electric power for another on a transmission grid (more simply: congestion occurs when insufficient transfer capacity is available to implement all of the preferred schedules...

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

See "Financial Transmissions Rights"

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

An unexpected failure or outage of a system that may include single or multiple components and may lead to simultaneous component outages

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

Operating a system so that the single, most severe contingency is sustained without causing instabilities, voltage collapse or overloads