A way of joining photovoltaic cells by connecting positive leads to negative leads; such a configuration increases the voltage.

A refined petroleum product suitable for use as a fuel in internal combustion engines.

This is an independent regulatory agency within the U.S. DOE that has jurisdiction over interstate electricity sales, wholesale electric rates, natural gas pricing, oil pipeline rates, and gas pipeline certification. It also licenses and inspects private, ...

The concept of capturing and converting the energy available in the motion of ocean waves to energy.

Energy supplied during periods of relatively high system demands as specified by the supplier.

The path followed by electrons from a generation source, through an electrical system, and returning to the source.

A type of motor designed to operate precisely at the synchronous speed with no slip in the full-load speeds (rpm).

A unit or measure of electricity supply or consumption of 1,000 Watts over the period of one hour; equivalent to 3,412 Btu.

A type of heating system where heat, resulting when electric current flows through an "element" or conductor, such as Nichrome, which has a high resistance, is radiated to a room.

The process of breaking down organic material; reduction of the net energy level and change in physical and chemical composition of organic material.

A measure of the number of cycles or wavelengths of electrical energy per second; U.S. electricity supply has a standard frequency of 60 hertz.

A wood or gas burning heating appliance that fits into the opening or protrudes on to the hearth of a conventional fireplace.

A measure of the amount of light incident on a surface; measured in foot-candles or Lux.

The absolute centimeter-gram-second unit of force; that force that will impart to a free mass of one gram an acceleration of one centimeter per second per second.

All the components of the appliance used to condition interior air of a building.

Features and vegetation on the outside of or surrounding a building for aesthetics and energy conservation.

The ability of a building construction assembly (partition, wall, floor, etc.) to resist the passage of fire. The rating is expressed in hours.

An electrochemical battery that uses lead and lead oxide for electrodes and sulfuric acid for the electrolyte.

The period of low energy demand, as opposed to maximum, or peak, demand.

Alternating current in which three separate pulses are present, identical in frequency and voltage, but separated 120 degrees in phase.