You must be a farmer, there is no reason to have a pump power of 2.4Kw for a house dwelling In any case, if you are off grid you need batteries to last the winter days and the night obviously, that is a better metric to rely on. An average household, no conditioner on, can be assumed to be 1Kw of power, max, possibly 500w average for the whole day. It is all feasible, given enough space and money, you still end up with maintenance like, what to do if inverter breaks or hail cometh. So, it is complicated, really complicated