Cooperative members interested in installing a small wind system should ask vendors or distributors the following questions:

How reliable is the rated energy output? How did you calculate the output? What wind speeds did you use?
Is the inverter UL listed?
What is the estimated total installed cost?
How long is the warranty? What does it cover? Parts? Labor? Can it be extended? If so, what will it cost?
What are your credintials? How long have you been in business? how many turbines have you sold? Have your turbines been certified?