A complete PV power system composed of the module (or arrary), and balance-of-system (BOS) components including the array supports, electrical conductors/wiring, fuses, safety disconnects, and grounds, charge controllers, inverters, battery storage, etc.

A type of furnace in which fuel is spread, automatically or mechanically, across the furnace grate.

A turbine that generates power from the combustion of a fuel.

A small groove scribed into the surface of a solar photovoltaic cell which is filled with metal for contacts.

All the natural and living things around us. The earth, air, weather, plants, and animals all make up our environment.

A device that removes airborne particles from breathable air. Negative ions are produced and give up their negative charge to the particles. These new negative particles are then attracted to the positive particles surrounding them. This accumulation proc ...

Insulation made from rockwool fibers, fiberglass, cellulose fiber, vermiculite or perlite minerals, and composed of loose fibers or granules can be applied by pouring directly from the bag or with a blower.

A high-intensity discharge lamp type that uses mercury and several halide additives as light-producing elements. These lights have the best Color Rendition Index (CRI) of the High-Intensity Discharge lamps. They can be used for commercial interior lightin ...

A nationally recognized energy rating program that gives builders, mortgage lenders, secondary lending markets, homeowners, sellers, and buyers a precise evaluation of energy losing deficiency's in homes. Builders can use this system to gauge the energy q ...

Transmit high-voltage electricity from the transformer to the electric distribution system.

A smaller version of standard fluorescent lamps which can directly replace standard incandescent lights. These lights consist of a gas filled tube, and a magnetic or electronic ballast.

The temperature that a system is designed to maintain (inside) or operate against (outside) under the most extreme conditions.

A light control device that allows light levels to be manually adjusted. A dimmer can save energy by reducing the amount of power delivered to the light while consuming very little themselves.

The measure of closeness in shape between a waveform and it's fundamental component.

A term for the process of transmitting electricity over transmission lines not owned by the supplier of the electricity to a retail customer of the supplier. With retail wheeling, an electricity consumer can secure their own supply of electricity from a b ...

The device that reduces the pressure of liquid refrigerant thereby cooling it before it enters the evaporator coil in a heat pump.

In reference to solar thermal collectors, the condition where the heat transfer fluid is flowing through the collector loop under normal operating conditions.

A complete lighting unit consisting of a lamp(s), housing, and connection to the power circuit.

A smokestack or flue for exhausting the products of combustion from a combustion appliance.

A heat source, such as a space heater, used to provide more heat than that provided by a primary heating source.