The amount of heat energy that may be converted into useful energy from a fuel.
Average cost
The total cost of production divided by the total quantity produced.
Average demand
The demand on, or the power output of, an electrical system or any of its parts over an interval of time, as determined by the total number of kilowatt-hours divided by the units of time in the interval.
Average rated life
The median time it takes for a lamp to burn out. For example, a 60 watt bulb can be expected, on the average, to burn for 1,000 hours. Based upon continuous testing lamps in laboratories, the 1,000 hour rating is the point in time when 50% of the test samples have burned out and 50% are still burning.
Average wind speed
The mean wind speed over a specified period of time.
Avoided cost
The incremental cost to an electric power producer to generate or purchase a unit of electricity or capacity or both.
Avonite
A solid surface material resembling granite, used for countertops, can be worked and polished using woodworking tools.
Awl-shaped
A narrow leaf which tapers to a stiff point.
Awning
An architectural element for shading windows and wall surfaces placed on the exterior of a building; can be fixed or movable.
