We have 8 solar panels up at our old shed house. They are 123watts each, which is about the same as having 13 80watt panels. The batteries and inverter are up at the shed house too, as is the 4 thousand gallon rain water tank. We usually have all the power we need, except in the winter when the sun hours are decreased. Recently we had to buy a second hand 5kva generator to help us, and the batteries through the extended overcast weather.
Once we finished stage 1 of the new house, we trenched the power and water lines down here. It works well, now both houses have power and water. Gravity feed the water down here, but the shed house uses a solar powered pump. We're thinking about getting another water tank, the gardens would greatly benefit, plus in bushfire season we need the extra water.
