Changes

[[Image: solar pump icon.png|right|80px]]

[[Image:SolarGrid.jpg|thumb|right|200px|Kalalé District consists of 44 villages (~100,000 people), none of which are connected to the town of Benin’s electric power grid. They use solar instead. <br>Photo: [http://www.bobfreling.com/2009/08/solar-energy-powering-food-sec.htm Bob Freling's Solar Blog.]]]

With solar water systems the water is pumped during the peak sunshine hours of the day. It can be stored in a tank, and therefore it is not necessary to use batteries. The storage tank can be sized to provide some reserve during cloudy or rainy days. In sub-Saharan Africa the typical storage is about 3 to 5 days of water demand. In environments where rainy seasons occur, rainwater harvesting can offset the reduced output of the solar pump during this period.

===Construction, operations and maintenance===