The incremental cost to an electric power producer to generate or purchase a unit of electricity or capacity or both.

A reserve appliance; for example, a standby generator for a home or commercial building.

A building construction technique used to create a continuous air retarder that uses the drywall, gaskets, and caulking. Gaskets are used rather than caulking to seal the drywall at the top and bottom. Although it is an effective energy-saving technique, ...

Primitive plants, usually aquatic, capable of synthesizing their own food by photosynthesis.

A method of growing large size, high quality semiconductor crystal by slowly lifting a seed crystal from a molten bath of the material under careful cooling conditions.

The water that is forced into a boiler to take the place of that which is evaporated in the generation of steam.

Abbreviation for the American Society of Heating, Refrigeration, and Air-Conditioning Engineers.

A measure of the electrical charge of a capacitor consisting of two plates separated by an insulating material.

The air external to a building or device.

The illuminating power of a standard candle employed as a unit for determining the illuminating quality of an illuminant.

A passive or mechanical device used to ventilate an attic space, primarily to reduce heat buildup and moisture condensation.

A wall usually about 3 to 4 feet high located that is placed in the attic of a home, anchored with plates between the attic floor joists and the roof joist. Sheathing can be attached to these walls to enclose an attic space.

In heating and cooling system distribution ductwork, the transformation pieces connecting horizontal round leaders to vertical rectangular stacks.

A system that records the consumption of electricity, gas, water, etc, and sends the data to a central data accumulation device.

The amount of electromotive force, measured in volts, that exists between two points.

An air pollution control device that removes organic contaminants by oxidizing them into carbon dioxide and water through a chemical reaction using a catalysis, which is a substance that increases (or decreases) the rate of a chemical reaction without bei ...

A device for converting one form of energy or fuel into useful energy or work.

A region of transition between semiconductor layers, such as a p/n junction, which goes from a region that has a high concentration of acceptors (p-type) to one that has a high concentration of donors (n-type).

The ratio of the average load on (or power output of) a generating unit or system to the capacity rating of the unit or system over a specified period of time.

An electrical conductor that serves as a common connection for two or more electrical circuits; may be in the form of rigid bars or stranded conductors or cables.