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w
Watt
A measure of real power production or usage equal to one Joule per second. The rate of energy transfer equivalent to 1 ampere flowing under a pressure of 1 volt at unity power factor. An electric unit of power or a rate of doing work.
Watt-hour (Wh)
An electrical energy unit of measure equal to 1 watt of power supplied to, or taken from, an electric circuit steadily for 1 hour.
Weighted Average Cost of Gas (WACOG)
The weighted average unit cost of a supply of natural gas. WACOG is calculated as the total cost of all natural gas purchased during a base period divided by either the total quantity purchased (unit of production) or the system throughput (unit of sales) during the same period.
Wellhead Price
The price received by the producer for sales at the well.
Wheeling Service
The movement of electricity from one system to another over transmission facilities of intervening systems. Wheeling service contracts can be established between two or more systems.
Wholesale Competition
A system whereby a distributor of power would have the option to buy its power from a variety of power producers, and the power producers would be able to compete to sell their power to a variety of distribution companies.
Wholesale Power Market
The purchase and sale of electricity from generators to resellers (who sell to retail customers) along with the ancillary services needed to maintain reliability and power quality at the transmission level.
Wholesale Transmission Services
The transmission of electric energy sold, or to be sold, at wholesale in interstate commerce (from EPAct)
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