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To help you understand the key issues facing our industry, please use the following glossary of terms:  

A   B   C   D   E   F   G   H   I   J   K   L   M   N   O   P   Q   R   S   T   U   V   W   X   Y   Z

Watt
A unit of measurement of true power.

Watt-hour
A unit of energy measurement, equal to one watt of power used for one hour.

Watt-hour Meter
An instrument that records the power used in watt-hours.

Weatherhead
The point of entrance to service conduit from service drop. A device to keep water from entering service conduit.

Wind Energy
Refers to the kinetic (in motion) energy of the wind, which can turn wind turbines generating electricity.

WYE System
A method of connecting three single transformers for three-phase application.


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The other Edison International companies are not the same companies as Southern California Edison (SCE), the utility, and are not regulated by the California Public Utilities Commission.