Other Power How to site primarily dedicated to homemade wind power. These guys have spent years perfecting wind generators.
Hugh Piggott Considered by many to be the father of home built wind generators, great free information as well as comprehensive books.
Don Rowe.com Nice selection and prices on a variety of power inverters.
Solar Easy Nice selection of inexpensive 12 Volt compact fluorescent bulbs
CMS Magnetics Great variety of quality rare earth magnets, good prices.
Build-It-Solar Nice how to site for many different off grid type of projects.