I've been reading about solar voltaic and wind generator systems. The best book so far is The Complete Idiot's Guide to Solar Power for Your Home, by Dan Ramsey. I've also been reading back issues of Home Power Magazine, which is the best place to start finding out about solar and wind power. You can get an online subscription for $10 which allows you to read all their back issues.
There are some questions I haven't found answers to yet. Solar PV panels put out direct current, so you need an inverter to change direct to alternating current. To match your power company's 60 Hz current, your inverter has to be a synchronous inverter. Does your system's voltage have to match the power company's exactly? Any solar or wind system is constantly changing, so does the inverter also constrain the voltage? If so, does the constraint "chop off" any usable power above what the inverter needs to make exactly 240 volts? And are there any compatibility problems with the wind generator and solar panels, like say the sun is shining brightly but the wind is calm, or the wind is howling at midnight?