Do you know anything about using solar panels on an electric borehole pump?

There is an orphanage back home in Zimbabwe that is trying to set up a solar system for their previously electric 30-meter-deep borehole (electricity is now scarce there) ... how do I even begin to know what I'm looking for? What questions do I need to ask about the borehole there? What should I look for on the solar panels? Besides solar panels, what else do I need to set this up? Shipping is no problem, there is a huge crate being sent over there soon that can take them. I'd really appreciate the help!