A device or media that absorbs heat for storage for later use.

The products of all combustion processes formed by the combination of nitrogen and oxygen.

A configuration of an electrical circuit in which the positive lead is connected to the negative lead of another energy producing, conducting, or consuming device. The voltages of each device are additive, whereas the current is not.

A way of joining photovoltaic cells or modules by connecting positive leads together and negative leads together; such a configuration increases the current, but not the voltage.

The process of implementing measures to reduce peak power demands on a system.

Those privately or publicly owned establishments that generate, transmit, distribute, or sell electricity.

Any material that has a limited capacity for conducting an electric current. Certain semiconductors, including silicon, gallium arsenide, copper indium diselenide, and cadmium telluride, are uniquely suited to the photovoltaic conversion process.

Classifications of fires developed by the National Fire Protection Association.

A solar energy concentrating technology that uses a linear receiver that tracks the focal area of a reflector or array of reflectors.

The thermal energy used in an industrial process.

For valves and fittings, implies that they are suitable for working pressures between 125 to 175 pounds per square inch.

The total amount of electric energy loss in an electric system between the generation source and points of delivery.

The amount that the voltage, current, and/or power output of a solar cell changes due to a change in the cell temperature.

An aluminum foil fabricated insulator with backings applied to provide a series of closed air spaces with highly reflective surfaces.

A component of a water heating system that opens at a designated temperature or pressure to prevent a possible tank, radiator, or delivery pipe rupture.

The amount (percent) of light that is reflected by a surface relative to the amount that strikes it.

A discontinuance of electric power supply.

The power output of a device under specific or nominal operating conditions.

A structure or media that absorbs heat.

A wheel that is designed to use the weight and/or force of moving water to turn it, primarily to operate machinery or grind grain.