Pumping water with solar electricity is a natural fit because water is needed most when and where the sun shines the brightest. Solar electricity can be used to pump water to a storage tank from a deep well, open pond, or river, replacing the need for a generator or a hand-powered pump. Solar water pumps, which are typically used to supply water for irrigation of small crops, and drinking water for villages, health centers, and schools, are able to affordably deliver a usable quantity of water with no fuel cost and little maintenance.

Khmer Solar stocks four Included in every water pump kit is a pump controller, or booster, which connect solar modules to submersible motors and centrifugal pumps. Controllers monitor the incoming solar power and boost current to operate solar modules at their peak power point and maximize pump output.