A colorless, odorless, tasteless gas composed of one molecule of Carbon and four of hydrogen, which is highly flammable. It is the main constituent of "natural gas" that is formed naturally by methanogenic, anaerobic bacteria or can be manufactured, and w ...

A power plant that produces electricity by the force of water falling through a hydro turbine that spins a generator.

The demand of a consumer of electricity at the time of a power supplier's peak system demand.

Pounds/force per square inch gauge.

The sum of the ratings of the electricity consuming apparatus connected to a generating system.

The highest possible pressure in a fuel-air mixture before spontaneous ignition occurs.

In reference to solar photovoltaic cell manufacure, a method of growing a large-size, high-quality crystal whereby coils heat a polycrystalline ingot placed atop a single-crystal seed. As the coils are slowly raised the molten interface beneath the coils ...

A group of solar photovoltaic modules connected together.

The part of an energy utility's charge based on actual energy consumed by the customer; the product of the kilowatt-hour rate and the total kilowatt-hours consumed.

In reference to solar photovoltaic devices, the growth of one crystal on the surface of another crystal. The growth of the deposited crystal is oriented by the lattice structure of the original crystal.

That part of an electricity bill that is based on the amount of electrical energy consumed or supplied.

The ratio of available energy per pound; usually used to compare storage batteries.

The heat produced by combusting a specific quantity and volume of fuel in an oxygen-bomb colorimeter under specific conditions.

A toilet that uses less water than a standard one during flushing, for the purpose of conserving water resources.

The ability to dispatch power.

Steam available directly from a boiler under full pressure.

Amorphous silicon with a small amount of incorporated hydrogen. The hydrogen neutralizes dangling bonds in the amorphous silicon, allowing charge carriers to flow more freely.

Turning off or disconnecting loads to limit peak demand.

A type of lamp that produces light from sodium gas contained in a bulb operating at a partial pressure of 0.13 to 1.3 Pascal. The yellow light and large size make them applicable to lighting streets and parking lots.

A building element that provides protection against the sun, wind, and precipitation.