One millionth of a meter (10-6 m).

A building heating, ventilation, and/or air conditioning system that distributes conditioned air to individual zones or rooms.

A group of solar photovoltaic modules connected together.

A law that requires electric utilities to purchase electricity produced from qualifying power producers that use renewable energy resources or are cogenerators. Utilities are required to purchase power at a rate equal to the avoided cost of generating the ...

An electrical device that resists electric current flow.

A photovoltaic device where incident sunlight is split into different spectral regions, with an optical apparatus, that are directed to individual photovoltaic cells that are optimized for converting that spectrum to electricity.

A power plant that produces electricity by the force of water falling through a hydro turbine that spins a generator.

A load management objective that moves loads from on-peak periods to off-peak periods.

A system of astronomical time in which the sun crosses the true north-south meridian at 12 noon, and which differs from local time according to longitude, time zone, and equation of time.

A popular term used for an evaporative cooling device.

The physical process by which a liquid or solid is transformed into the gaseous state. For this process a mechanical device uses the outside air's heat to evaporate water that is held by pads inside the cooler. The heat is drawn out of the air through thi ...

A process used to apply photovoltaic semi-conductor material to a substrate by a physical vapor deposition process where high-energy ions are used to bombard elemental sources of semiconductor material, which eject vapors of atoms that are then deposited ...

To influence the demand on a power source.

A particle of light that acts as an individual unit of energy.

In reference to solar photovoltaic devices, the growth of one crystal on the surface of another crystal. The growth of the deposited crystal is oriented by the lattice structure of the original crystal.

The temperature of the air as measured by a standard thermometer.

The number of cycles through which an alternating current passes per second; in the U.S. the standard for electricity generation is 60 cycles per second (60 Hertz).

The process of burning; the oxidation of a material by applying heat, which unites oxygen with a material or fuel.

Standardized codes used to classify businesses by type of activity they engage in.

The direct, diffuse, and reflected solar radiation that strikes a surface.