There are two broad classes of wind turbines: commercial-scale and residential-scale. Most opportunities for public investment will be with the commercial-scale turbines, as many of the industry participants are publicly-held corporations. These industry participants include wind developers who own the turbines and hold Power Purchase Agreements with utilities; the utilities or electric distribution companies that sell the electricity retail to customers; transmission companies; energy marketers; turbine installation contractors; and turbine, tower, and other related hardware manufacturers. Some of these companies are listed on our Resources page. We do not endorse any one of these companies, but would recommend you consult an investment advisor that specializes in the energy industry.
A new development in the investment profession is that a growing number of advisors, managers, and mutual funds are specializing in environmentally-benign investment opportunities. A business library can also help you find references to these opportunities.