A plan developed by an electric utility, sometimes as required by a public regulatory commission or agency, that defines the short and long term capacity additions (supply side) and demand side management programs that it will undertake to meet projected ...

An amount paid by a customer for being connected to an electricity supplier's transmission and distribution system.

A turbine that has a runner with attached blades similar to a propeller used to drive a ship. As water passes over the curved propeller blades, it causes rotation of the shaft.

The tendency of the sunlight to electricity conversion efficiency of amorphous silicon photovoltaic devices to degrade (drop) upon initial exposure to light.

The net south-facing glazing area projected on a vertical plane. Also, the solid area covered at any instant by a wind turbine's blades from the perspective of the direction of the windstream (as opposed to the swept area).

Pounds/force per square inch absolute.

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 unit that equals 20 long hundredweight or 2,240 pounds. Used mainly in England.

To price and sell greenpower/electricity higher than that produced from fossil or nuclear power plants, supposedly because some buyers are willing to pay a premium for greenpower.

Salt mixtures with potential applications as solar thermal energy storage materials.

A unit of illuminance; equal to one lumen per square foot.

A widely used rate of return for performing economic analysis. This method solves for the interest rate that equates the equivalent worth of an alternative's cash receipts or savings to the equivalent worth of cash expenditures, including investments. The ...

Restrictions on the use of a property.

A measure of the quality of a light source by expressing the color appearance correlated with a black body.

Materials with high thermal energy storage capacity contained in or part of a building's walls, floors, or freestanding elements.

see Peak Watt.

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

The conversion of electric power to visible light by using an electric charge to excite gaseous atoms in a glass tube. These atoms emit ultraviolet radiation that is absorbed by a phosphor coating on the walls of the lamp tube. The phosphor coating produc ...

The region between an n-layer and a p-layer in a single material, photovoltaic cell.

The process of controlling indoor moisture levels and condensation.