WALL. The vertical exterior surface of a building and the vertical interior surfaces which divide a building's space into rooms.
WATERCOURSE. An open trench either naturally or artificially created which periodically or continuously contains moving water draining an area of at least two acres which has definite banks, a bed and visible evidence of a continued flow or occurrence of water.
WIND ENERGY CONVERSION SYSTEM (WECS). A device or combination of devices, such as free standing towers with horizontal axis wind turbines, structure mounted vertical axis wind turbines, and all associated facilities and components that convert wind energy to electrical energy. [Amended 3-14-2011]
WIND ENERGY CONVERSION SYSTEM, SMALL. A wind energy conversion system which has a rated capacity of not more than ten kilowatts (kW) and which is intended to primarily reduce on-site consumption of utility power. A small WECS may also provide electricity for off-site use and may be structure mounted or tower mounted. [Amended 3-14-2011]
WIND ENERGY CONVERSION SYSTEM, LARGE. A wind energy conversion system which has a rated capacity of more than ten kilowatts (kW) and which is intended to primarily reduce on-site consumption of utility power. A large WECS may also provide electricity for off-site use and would be typically tower mounted. [Amended 3-14-2011]
WIND ENERGY MONITORING STATION. Any device which is tower or structure mounted, which is temporary in nature, and measures wind data for a specific site. [Amended 3-14-2011]