We use two 75 watt panels to keep a two battery bank charged up at the cabin. We can use the lights while we are there and never have a problem. The lights are 12 volt flourescents. The panels also power the well pump and the inverter for the TV and VCR. We do have a Honda generator as backup and a battery charger. When we are not there it powers the electric fence.
I have the plans for a verticle wind mill that uses a 130 amp alternator to keep a bank of batteries charged. The tower is made from pipe and the plades are fiberglass "half barrels" formed on 50 gallon drums. there are three levels with each level consisting of two half drum blades with the open ends facing each other and offset by 2/3 the distance across the open end. (1/3 the diameter overlapping)
The blades drive a pipe that is bolted to a large pulley and a belt drives the alternator. 4 ga wire runs to the batteries and from the batteries to the cabin.
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HANDHELD VAPORIZER