The deferment of certain loads to limit electrical power demand, or the production of energy during off-peak periods for storage and use during peak demand periods.

The ratio of actual power being used in a circuit, expressed in watts or kilowatts, to the power that is apparently being drawn from a power source, expressed in volt-amperes or kilovolt-amperes.

A popular term for localized or on-site power generation.

The solar power density incident on a surface of stated area and orientation, usually expressed as Watts per square meter or Btu per square foot per hour.

A unit of volume equal to 1 cubic foot at a pressure base of 14.73 pounds standard per square inch absolute and a temperature base of 60 degrees Fahrenheit.

A pre-cut layer of insulation applied around a water heater storage tank to reduce standby heat loss from the tank.

A solar thermal electric central reciever power plant ("power tower") located in Barstow, California, and completed in 1981. The Solar One had a design capacity of 10,000 peak kilowatts, and was composed of a receiver located on the top of a tower surroun ...

Water in vapor form; used as the working fluid in steam turbines and heating systems.

In reference to a wind energy conversion system, the wind speed profile in which wind speeds increase with the logarithmic of the height of the wind turbine above the ground.

A method used to estimate building heating loads by assuming that heat loss and gain is proportional to the equivalent heat-loss coefficient for the building envelope.

Pounds of pressure per square inch.

Steam available directly from a boiler under full pressure.

The transfer of heat by means of air currents.

This committee has oversight over the generation and marketing of electric power from federal water projects by federally charted or Federal RPM authorities, measures and matters concerning water resources planning, compacts relating to use and apportionm ...

The ratio of average energy demand (load) to maximum demand (peak load) during a specific period.

A generator with a single armature coil, which may have many turns and the alternating current output consists of a succession of cycles.

A solar energy system designed to provide heat to individual rooms in a building.

A curve on a chart showing power (kW) supplied (on the horizontal axis) plotted against time of occurrence (on the vertical axis) to illustrate the variance in a load in a specified time period.

A solar heating system that preheats water or air that is then heated more by another heating appliance.

An amount paid by a customer for being connected to an electricity supplier's transmission and distribution system.