TrippLite 1200W inverter/charger with (2x) 75Ah sealed deep cycle RV batteries for the pumps. This is just to cover the 30-60 sec delay before the whole house 20kw generator kicks on.

Epic, I was just thinking about what I would do in the event of a long-term power failure (which isn't inconceivable given our rural location), given the value of livestock some of us keep it would be well worth investing in a set up like that.
