A renewable energy system that includes two different types of renewable energy technologies that produce the same type of energy; for e.g., a wind turbine and a solar photovoltaic array combined to meet a power demand.

A deposition process whereby heat is used to break molecules into elemental sources that are then spray deposited on a substrate.

That portion of an electricity supply system used to deliver electricity from points on the transmission system to consumers.

The interior area of a building, calculated in square feet or meters.

A chemical element, of atomic number 14, that is semi-metallic, and an excellent semiconductor material used in solar photovoltaic devices; commonly found in sand.

A solid that contains pores; normally, it refers to interconnected pores that can transmit the flow of fluids. (The term refers to the aquifer geology when discussing sites for CAES.)

A method of financial and economic analysis used to determine present and future values of investments or expenses.

A water and energy conserving device that limits the amount of water that a faucet or showerhead can deliver.

The power required to energize the magnetic field of a generator.

A type of anaerobic digester that has a horizontal tank in which a constant volume of material is added and forces material in the tank to move through the tank and be digested.

A window located on the roof of a structure to provide interior building spaces with natural daylight, warmth, and ventilation.

The mean distance a free electron or hole moves before recombining with another hole or electron.

Usually refers to ethanol to 160 to 200 proof.

Those gases, such as water vapor, carbon dioxide, tropospheric ozone, methane, and low level ozone that are transparent to solar radiation, but opaque to long wave radiation, and which contribute to the greenhouse effect.

The amount of energy produced as a percentage of the amount of energy consumed.

The quantity of heat that a cooling appliance is capable of removing from a room in one hour.

The air that is supplied to the combustion chamber of a furnace.

A plot of a wind energy conversion device's power output versus wind speed.

A solar power station investigated by NASA that entailed a satellite in geosynchronous orbit that would consist of a very large array of solar photovoltaic modules that would convert solar generated electricity to microwaves and beam them to a fixed point ...

A unit for the quantity of electricity transported in 1 second by a current of 1 ampere.