A device or material with a high resistance to electricity flow.

This type of heat pump is known as an air-to air system.

Ethyl alcohol (C2H5OH)

The direct, diffuse, and reflected solar radiation that strikes a surface.

An energy band in a semiconductor in which electrons can move freely in a solid, producing a net transport of charge.

An unregulated subsidiary of an electric utility that is allowed to generate and sell wholesale power as an independent energy producer, and is exempt from the Public Utility Holding Company Act of 1935.

The ability to dispatch power.

A type of inverter that produces square wave output.; consists of a DC source, four switches, and the load. The switches are power semiconductors that can carry a large current and withstand a high voltage rating. The switches are turned on and off at a c ...

A utility owned by stockholders or other investors; sometimes referred to as a private utility, in contrast to a public utility that is owned by a government agency or cooperative.

A frequently used room or area that is maintained at a more comfortable level than the rest of the house; also known as a "warm room."

A load management objective that moves loads from on-peak periods to off-peak periods.

A system of astronomical time in which the sun crosses the true north-south meridian at 12 noon, and which differs from local time according to longitude, time zone, and equation of time.

A power plant that uses two thermodynamic cycles to achieve higher overall system efficiency; e.g.: the heat from a gas-fired combustion turbine is used to generate steam for heating or to operate a steam turbine to generate additional electricity.

Solar Two is a retrofit of the Solar One project (see above). It is demonstrating the technical feasibility and power potential of a solar power tower using advanced molten-salt technology to store energy. Solar Two retains several of the main components ...

The highest wind speed at which a wind turbine stops producing power.

Standardized codes used to classify businesses by type of activity they engage in.

A building element that provides protection against the sun, wind, and precipitation.

The temperature of the air as measured by a standard thermometer.

A popular term used for an evaporative cooling device.

A method of depositing thin semiconductor photovoltaic) films. With this method, physical processes, such as thermal evaporation or bombardment of ions, are used to deposit elemental semiconductor material on a substrate.