I have a Grundfos 5SQ-180 that is sitting 250' down a 260' well that has a static water level of 30' (so lots of water sitting down that hole). The replenish rate of the well is only about 2 gpm, but I just pump it to the surface into water storage containers (55 gallon food grade barrels) for now.
For the last year since I have had the well drilled, my little Honda EU2000i has worked admirably (on gas, won't run the pump on propane though), but I really want to get a solar system set up to run the pump.
I know the Grundfos is a 1/2 hp motor and the pump pulls about 12amps @ 115v.
With this in mind, I believe i need a 1500 watt inverter (and I can only seem to find modified sine wave inverters below 2000 watts), but what size battery bank would I need to run the pump for say an hour before I was at 50% DOD?
And how many watts in solar panels would I need if my winter peak sun hours is 1.5? I know I'll also need a charge controller....but am I missing anything else?
Would a system like this function when it was 10 degrees Fahrenheit out?