400 watt solar panels and kits are amongst the most favored size for small holdings, RVs, Compact Residences and Motorboats.
This is just because they offer an excellent balance between usefulness, size and investment expense.
With the ideal setup and usage conditions these could quite easily provide all the electric power required for a smaller property, back garden home office etc as more and more electrical appliances and lighting particularly become less energy greedy!
While researching these products we have uncovered and confirmed multiple instances where the 400 Watt solar panel array setup delivered all the energy requirements of the individuals who installed them!
I am installing my own solar panels and here is a list of some great resources if you are thinking of doing the same.....