Wind Power

Wind power can be an excellent complement to a solar power system. Here in Colorado, when the sun isn't shining, the wind is usually blowing. Wind power is especially helpful here in the winter to capture both the ferocious and gentle mountain winds during the times of least sunlight and highest power use. In most locations, wind is not suitable as the only source of power, it simply fills in the gaps left by solar power quite nicely.
Building a wind generator from scratch is not THAT difficult of a project. You will need a shop with basic power and hand tools, and some degree of dedication. Large wind generators of 2000 Watts and up are a major project needing very strong construction, but smaller ones in the 700-1000 Watt, 8-11 foot range can be built fairly easily. In fact, it is highly recommended that you tackle a smaller wind turbine before even thinking about building a large one. You'll need to be able to cut and weld steel, and a metal lathe can be handy