The process of transmitting electricity over one or more separately owned electric transmission and distribution systems. (See Wholesale and Retail Wheeling.)

The rate of heat production by a steady current in any part of an electrical circuit that is proportional to the resistance and to the square of the current, or, the internal energy of an ideal gas depends only on its temperature.

A type of turbine in which combusted, pressurized gas is directed against a series of blades connected to a shaft, which forces the shaft to turn to produce mechanical energy.

The point or outdoor temperature where the heating capacity of a heat pump matches the heating requirements of a building.

An air conditioner consisting of one or more assemblies that move, clean, cool, and dehumidify air.

Standardized weights or volumes for heating fuels.

The measure of seasonal or annual efficiency of a heat pump operating in the heating mode. It takes into account the variations in temperature that can occur within a season and is the average number of Btu of heat delivered for every watt-hour of electri ...

The unit price and quantity to which it applies as specified in a rate schedule or contract.

The storage of heat energy during utility off-peak times at night, for use during the next day without incurring daytime peak electric rates.

A group of wind turbines interconnected to a common utility system through a system of transformers, distribution lines, and (usually) one substation. Operation, control, and maintenance functions are often centralized through a network of computerized mo ...

A device for converting a solid fuel to a gaseous fuel.

Waste material from households and businesses in a community that is not regulated as hazardous.

The physically connected generation, transmission, and distribution facilities and components operated as a unit.

The cutting of a grid pattern of grooves in a semiconductor material, generally for the purpose of making interconnections.

Under the First Law of Thermodynamics, efficiency is the ratio of work or energy output to work or energy input, and cannot exceed 100 percent. Efficiency under the Second Law of Thermodynamics is determined by the ratio of the theoretical minimum energy ...

The process in which a solid fuel is converted into a gas; also known as pyrolitic distillation or pyrolysis. Production of a clean fuel gas makes a wide variety of power options available.

A thin sheet of material (metal) of a heat exchanger that conducts heat to a fluid.

These brines are hot (300 F to 400 F) (149 C to 204 C) pressurized waters that contain dissolved methane and lie at depths of 10,000 ft (3048 m) to more than 20,000 ft (6096 m) below the earth's surface. The best known geopressured reservoirs lie along th ...

Any gaseous, liquid, or solid fuel used for indoor space heating.

A unit of rate of water evaporation equal to the evaporation per hour of 34.5 pounds of water at a temperature of 212 degrees Fahrenheit into steam at 212 degrees F.