Letter Re: A Practical PV-Powered Well Pump and Cistern System
James: I appreciate your web site, lots of good thoughtful info and no armchair commando nonsense. I rarely post on this or related blogs, but I’ve just installed two complete solar water systems and can perhaps add a bit to the backup-powered water discussion. A solar system is tailor-made for supplying water, IMHO, because instead of storing electricity in batteries for nighttime use, it stores water in a tank for use on demand, no inverters, no batteries, no fuel. Simple and effective. Both systems use Grundfos submersible pumps and two solar panels of about 170 watts each. One system pumps …