Glossary

The charge for operations and maintenance of a utility's transmission and distribution systems

The cost of providing additional electricity; "The competitive price of a MWh of electricity is equal to the additional amount it would cost to generate an additional MWh, once all current demand is met. This additional cost is commonly referred to as the...

The force that makes electricity flow; the unit of measure of electric potential

Power provided by contract to a customer when its normal sources are unavailable

the rate in cycles per second (Hertz) at which voltage and current oscillate in electrical power systems (the reference frequency is 60 Hz in North America)

Accumulated capital cost of a utility's purchased or installed facilities that serve customers

The rate of electricity usage (measured in kilowatt- or megawatt-hours) by a customer

A price set by the mutual decisions of many buyers and sellers operating in a competitive market

A fee for using the transmission or distribution system that is based on the volume of electricity that is transmitted

The interconnected operations service that provides the needed capacity and energy to transmission customers to replace the loss of generation and to cover the portion of demand that exceeds generation supplies for more than a short period