Rewired,
Use of a high output automobile alternator for wind is feasible (depending on your definition of the word). A problem lies in getting the alternator rotating at high enough RPM's for operation which may require a larger propeller than you may think is necessary and some gearing.
These little alternators do work well for microhydro generating plants, yet with 24/7 operation, 500-750 watt continuous output, and 20 storage batteries (200 amp-hr each, the design was for high loads of short duration) a wasteful user can drain the system quickly (just plug in a fridge and minor lights and watch your power drain, much better to keep the fridge on propane). You also need a good water source typically better if you have a high head of about 200 feet of fall (the smaller the fall the higher the volume needed).
