The tank of a water heater.

A commmon term refering to an electricity transmission and distribution system.

The local climate of specific place or habitat, as influenced by landscape features.

An insulation product made of a fibrous material or plastic foams, pressed or extruded into board-like forms. It provides thermal and acoustical insulation strength with low weight, and coverage with few heat loss paths.

A body of water that contains brackish (highly saline) water that forms layers of differing salinity (stratifies) that absorb and trap solar energy. Solar ponds can be used to provide heat for industrial or agricultural processes, building heating and coo ...

A gasifier in which the feedstock (fuel) is suspended by the movement of gas to move it through the gasifier.

A method used to estimate building heating loads by assuming that heat loss and gain is proportional to the equivalent heat-loss coefficient for the building envelope.

A unit of pressure [hydraulic (liquid) or pneumatic (gas)] that does not include atmospheric pressure.

A popular term for localized or on-site power generation.

A solar energy system designed to provide heat to individual rooms in a building.

Ethyl alcohol (C2H5OH)

A term used to describe solar thermal, central receiver, power systems, where an array of reflectors focus sunlight onto a central receiver and absorber mounted on a tower.

A component of a heat pump that reverses the refrigerant's direction of flow, allowing the heat pump to switch from cooling to heating or heating to cooling.

An amount paid by a customer for being connected to an electricity supplier's transmission and distribution system.

Solar radiation reflected from the ground onto a solar collector.

A plan developed by an electric utility, sometimes as required by a public regulatory commission or agency, that defines the short and long term capacity additions (supply side) and demand side management programs that it will undertake to meet projected ...

Fabricated as a single structure.

Air that is returned to a heating or cooling appliance from a heated or cooled space.

A chemical element (impurity) added in small amounts to an otherwise pure semiconductor material to modify the electrical properties of the material. An n-dopant introduces more electrons. A p-dopant creates electron vacancies (holes).

The deferment of certain loads to limit electrical power demand, or the production of energy during off-peak periods for storage and use during peak demand periods.