A building energy auditing technique for locating areas of low insulation in a building envelope by means of a thermographic scanner.

A solar energy conversion device that has a bowl shaped dish covered with a highly reflective surface that tracks the sun and concentrates sunlight on a fixed absorber, thereby achieving high temperatures, for process heating or to operate a heat (Stirlin ...

A gas that does not react with other substances; e.g. argon or krypton; sealed between two sheets of glazing to decrease the U-value (increase the R-Value) of windows.

These lights use an electrically heated filament to produce light in a vacuum or inert gas-filled bulb.

This is a national organization dedicated to representing the interests of cooperative electric utilities and the consumers they serve. Members come from the 46 states that have an electric distribution cooperative.

Any device (or plant) that follows the sun's apparent movement across the sky.

Equal to gross generation less electricity consumption of a power plant.

A mainly flat surface for transmitting radiant energy.

The amount of heat that a material can absorb and store.

In a given electrical circuit, the amount of current in amperes (i) is equal to the pressure in volts (V) divided by the resistance, in ohms (R).

A type of heating appliance similar to a fireplace, but much more efficient and clean burning. They are made of masonry and have long channels through which combustion gases give up their heat to the heavy mass of the stove, which releases the heat slowly ...

An electricity generating facility that uses geothermal energy.

Energy produced by the conversion of biomass directly to heat or to a liquid or gas that can be converted to energy.

Energy output from a system that equals energy input.

An elementary particle of an atom with a negative electrical charge and a mass of 1/1837 of a proton; electrons surround the positively charged nucleus of an atom and determine the chemical properties of an atom.

A measure of the average amount of a specified pollutant or material emitted for a specific type of fuel or process.

Power generated by a utility unit that operates at a very low capacity factor; generally used to meet short-lived and variable high demand periods.

The electrical power that oscillates between the magnetic field of an inductor and the electrical field of a capacitor. Reactive power is never converted to non-electrical power. Calculated as the square root of the difference between the square of the ki ...

One thousand kilowatt-hours or 1 million watt-hours.

A measure of the amount of energy lost during the generation, transmission, and distribution of electricity.