I still don't see how you are going to make it work on the fly, - although I recall the Dan's posting on a direct driven water pump before - see Ghurd's comment from your other story, but with a series string of panels you can match the power specifications you seek fairly closely. Rich
Ok, actually Dan wrote it up and posted it under the heading 'water pumping' off of the main page here: http://www.otherpower.com/otherpower_waterpumping.html'A Joule saved is a Joule made'