A high efficiency silicon photovoltaic concentrator cell that employs light trapping techniques and point-diffused contacts on the rear surface for current collection.

A law to protect consumers and investors. It placed geographic restrictions on mergers and limitations on diversification into non-utility lines of business and takeovers of electric and gas utilities, and also established regulated monopoly markets or se ...

The type of alternative current generated by alternating current generators, rotary inverters, and solid-state inverters.

In reference to a wind energy conversion device, the ratio of rotor blade surface area to the frontal, swept area that the rotor passes through.

A type of automatic thermostat (used on solar heating systems) that responds to temperature differences (between collectors and the storage components) so as to regulate the functioning of appliances (to switch transfer fluid pumps on and off).

A stack of wood 4 feet by 4 feet by 8 feet.

A value used to estimate interior air cooling requirements (load) calculated as the number of degrees per day (over a specified period) that the daily average temperature is above 65 degrees Fahrenheit (or some other, specified base temperature). The dail ...

A heating system in which steam or hot water for space heating or hot water is piped from a central boiler plant or electric power/heating plant to a cluster of buildings.

In reference to solar photovoltaic devices, a material that is composed of a single crystal or a few large crystals.

An electrical conductor/cable that carries electricity from a generator to other locations for distribution.

Solar radiation that arrives in a straight line from the sun.

One or more circuits of a distribution system on the same line or poles or supporting structures' usually operating at a lower voltage relative to the transmission line.

The legal issues related to protecting or ensuring access to sunlight to operate a solar energy system, or use solar energy for heating and cooling.

Strips of material used to separate multiple panes of glass within the windows.

The process of distilling (purifying) water using solar energy. Water can be placed in an air tight solar collector with a sloped glazing material, and as it heats and evaporates, distilled water condenses on the collector glazing, and runs down where it ...

A tube inside a domestic water heater that distributes the cold water from the cold water supply line into the lower area of the water heater where heating occurs.

A panel which covers the underside of an roof overhang, cantilever, or mansard.

A semiconductor (photovoltaic) material composed of variously oriented, small, individual crystals.

A device for transforming the quality and quantity of electrical energy; also an inverter.

A type of high intensity discharge light that has the most lumens per watt of any light source.