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.

The trapping of light inside a semiconductor material by refracting and reflecting the light at critical angles; trapped light will travel further in the material, greatly increasing the probability of absorption and hence of producing charge carriers.

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

The process of characterizing the wind resource, and its energy potential, for a specific site or geographical area.

The regular periodic arrangement of atoms or molecules in a crystal of semiconductor material.

The process of managing the consumption of energy, generally to optimize available and planned generation resources.

A mathematical representation of the frequency or ratio that specific wind speeds occur within a specified time interval.

A device that captures the heat from the exhaust air from a building and transfers it to the supply/fresh fresh air entering the building to preheat the air and increase overall heating efficiency.

The process of the absorption of heat from one location and its transfer to another for rejection or recuperation.

The amount of solar radiation striking a surface per unit of time and area.

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, ...

This designates the resistance of a material to heat conduction. The greater the R-value the larger the number.

A motor in which a three phase (or any multiphase) alternating current (i.e. the working current) is supplied to iron-cored coils (or windings) within the stator. As a result, a rotating magnetic field is set up, which induces a magnetizing current in the ...

An electricity powered device that extracts available heat from one area (the heat source) and transfers it to another (the heat sink) to either heat or cool an interior space or to extract heat energy from a fluid.

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

States that energy cannot be created or destroyed, but only changed from one form to another. First Law efficiency measures the fraction of energy supplied to a device or process that it delivers in its output. Also called the law of conservation of energ ...

The quantity of heat produced to change a unit weight of a liquid to vapor with no change in temperature.

The rate at which electricity is delivered to or by a system, part of a system, or piece of equipment expressed in kilowatts, kilovoltamperes, or other suitable unit, at a given instant or averaged over a specified period of time.

A WECS designed to produce electricity.

A pole used to assist in raising a tower.