290	ENERGY COLLECTING EQUIPMENT AND ACCESSORIES: SOLAR AND WIND
29010  *	Cells, Solar (Photovoltaic Cells), Unmounted
29020  *	Solar Air Conditioning Systems and Accessories: Absorption Type, etc.
29030  *	Solar Space Heating Systems and Accessories
29040  *	Solar Heat Collector Systems and Accessories
29050  *	Solar Heat Collector Tracking Systems and Accessories
29060  *	Solar Heat Collectors, Concentrating Type
29065  *	Solar Heat Collectors, Evacuated Tube Type
29070  *	Solar Heat Collectors, Flat Plate Type
29080  *	Solar Powered Electrical Systems (For Battery Charging, etc.)
29082  *	Solar Energy Systems, Complete
29086  *	Solar Radiant Flux Measuring Instruments (See also 220-33)
29090  *	Solar Water Heating Systems and Accessories
29095  *	Wind Electrical Generating Systems and Accessories