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The regular periodic arrangement of atoms or molecules in a crystal of semiconductor material.
Industry:Energy
The relationship of a building to true south, as specified by the direction of its longest axis.
Industry:Energy
The requirement that an electric power provider generate or purchase a specified percentage of the power it supplies/sells from renewable energy resources, and thereby guarantee a market for electricity generated from renewable energy resources.
Industry:Energy
The rotation of a horizontal axis wind turbine around its tower or vertical axis.
Industry:Energy
The round or rectangular tube(s), generally constructed of sheet metal, fiberglass board, or a flexible plastic-and-wire composite, located within a wall, floor, and ceiling that distributes heated or cooled air in buildings.
Industry:Energy
The smallest self-contained, environmentally protected structure housing interconnected photovoltaic cells and providing a single dc electrical output; also called a panel.
Industry:Energy
The solar power density incident on a surface of stated area and orientation, usually expressed as Watts per square meter or Btu per square foot per hour.
Industry:Energy
