We have been electrical contractors for a long time in Hawaii and are just getting into solar voltaic (this is our first job). I have a customer with a 1 bedroom house, all gas appliances, that wants solar voltaic + a 600W windmill to power lights and plugs via a battery bank and invertor off the grid. He already bought a SunForce 600W wind turbine and built his own little shed for the batteries that is about 4' x 8' with an 8' x 12' roof, located about 140' from the house. He wants us to put solar panels on the roof of the shed and install a battery bank and invertor to supply power for his house. I am thinking we could at best get 4 panels on the roof of the shed to produce about 1200 watts + the 600 from the windmill would be 1800W. Is that enough for his situation (it is a windy area with lots of direct sun) and what brand of equipment would you recommend (panels, invertor, and batteries)? Your input would be appreciated. Thanks
