Innovation: Cheap Solar Irrigation

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By Nick Leiber

October 10, 2013 at 3:53 PM UTC

This article is for subscribers only.

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This article is part of the October 14, 2013 issue of businessweek.

Innovator: Paul Polak
Age: 80
Background: Founder of SunWater. Psychiatrist turned entrepreneur

Form and function: Startup SunWater is readying an inexpensive solar-powered water pump and crop irrigation system. The goal is to provide farmers in the developing world with an alternative to costly, polluting diesel pumps and multipanel solar systems.