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Contingency Planning

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

Contract Path

A specific contiguous electrical path from a point of receipt to a point of delivery for which transfer rights have been contracted

Control Area

An electric system or systems bounded by interconnection metering and telemetry that controls generation to maintain its interchange schedule with other areas and the frequency regulation of its interconnection

Coop

A rural electric cooperative that generates or buys wholesale electricity to distribute to its customers in a service territory that may cover a wide geographical area; a cooperative is owned and operated by its members and may offer additional services

Cost of Service

Establishing the rates a utility charges its commercial, industrial and residential customers (customer classes) based on the reasonable and necessary costs of investment and servicing; in short, linking a utility's costs to its rate of return through regulation

CRR

Congestion Revenue Right. See "Financial Transmission Right"

Customer Choice

The ability of a customer to purchase power from a supplier at a rate agreed upon by both that is delivered to the customer's location (also called customer choice or retail competition)

Curtailment

A reduction in scheduled capacity or energy delivery

Day-Ahead Market

The trading of multi-hour blocs of electricity for delivery the next day (also called a forward market)

Default Service

Ensuring that electric service is not interrupted for customers who temporarily lack an electricity provider or who switch from one supplier to another

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