SOLAR BALLOON WATERING
Water Seed
akshaygupta
3
227
4.95
rollable PV-cell with electric pump
UP 1
ferdinand_y
24
48
6.62
Solar chimney groundwater mist pump. Mythbusted? Maybe not..
Sonnenpumpe
minuteman
12
165
5.72
SUTPT Well Pump
Drip Feed Irrigation and Conservation Agricultural Tools
solar balloon waterpump WIP
Solar Spiral Collector/Turbo pump-CSP
Solar-aided Groundwater Air Pumps - India
 Archimedes screw