According to its public website, the UMPI turbine generated 63873 kWh in June, July, and August 2013. Its installed capacity is 600 kilowatts, or 14,400 kWh per day; it actually averaged only 701.9 kWh per day, a Capacity Factor .051. This is 1/20 of its installed capacity, or 1 hour and 10 minutes of good wind per day.
If your mind shuts down in such a blizzard of figures, you are at the mercy of the wind promoters. You can be sure they are very adept at it, and they NEVER discuss Capacity Factor, for good reason. According to FERC, Maine's wind farms had a Capacity Factor for 2012 of 24.72 % . That's one quarter of installed capacity. The UMPI turbine's annual CF is around 11%.
Harry Roper Houlton/Danforth