Local Solar Power for Farming

In rural parts of the world where the power grid may be many miles away there is still a need for electricity.  These areas sometimes are more agricultural and rely on heavy machinery to do the work.  A great example of limiting the use of a diesel generator for a tracking solar array can be found here in German or reprinted here in English. The brilliance of this is in areas with lots of steady sunlight like the example in Egypt the use Solar panels without battery backups.  The power generated is then used to pump water from a well and fill the irrigation reservoir.  The reservoir is then controlled to irrigate the fields as needed.  This is all controlled by tracking system which also controls the measuring sensors for the system.  Only a small battery is used to align the solar panel early in the morning.  This system provides for the farmers needs while helping reduce overall emissions from diesel generators.  The initial startup cost would be