Take a minute and check out the kickstarter of my good friend Shawn Mills. The single question he gets asked the most is how can I move water with solar without needing batteries? Shawn is looking at doing research that has never done before, torture testing a ton of dc pumps. Assessing what their limits are when it comes to moving water, hundreds of feet and more. He will be turning this into a documentary style how to project. So if this is valuable to you show him some Workshop Love and Support what he is doing and get access on the ground floor.
https://www.kickstarter.com/projects/hmhs/solar-water-pumping-water-with-the-sun?ref=e1wrjy