A unit of electrical capacitance; the capacitance of a capacitor between the plates of which there appears a difference of 1 Volt when it is charged by one coulomb of electricity.

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 compound used to make certain types of solar photovoltaic cells.

Turbines in which the rotor speed increases and decreases with changing wind speed, producing electricity with a variable frequency.

A unit of electrical measurement equal to the product of a volt and an ampere.

Draft that is caused by temperature differences in the air.

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 unit of power equal to 1 billion Watts; 1 million kilowatts, or 1,000 Megawatts.

A type of insulation, composed of small diameter pink, yellow, or white glass fibers, formed into blankets or batts, or used in loose-fill and blown-in applications.

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

A type of wind turbine in which the axis of rotation is perpendicular to the wind stream and the ground.

A heat storage system that uses a heat storage medium, and where the additional or removal of heat results in a change in temperature.

A type of (geothermal) heat pump that uses well (ground) or surface water as a heat source. Water has a more stable seasonal temperature than air thus making for a more efficient heat source.

The first law states that energy can not be created or destroyed; the second law states that when a free exchange of heat occurs between two materials, the heat always moves from the warmer to the cooler material.

Houses that have earth berms around exterior walls.

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

An incorporated right, liberty, privilege, or use of another entity's property, distinct from ownership, without profit or compensation; a right-of-way.

In a wind energy conversion system, to pitch the turbine blades so as to reduce their lift capacity as a method of shutting down the turbine during high wind speeds.

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 ...

A turbine that uses water pressure to rotate its blades; the primary types are the Pelton wheel, for high heads (pressure); the Francis turbine, for low to medium heads; and the Kaplan for a wide range of heads. Primarily used to power an electric generat ...