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Saw one of these at the Damariscotta Mills Alewife Festival yesterday.

"Two SunEdison employees and six Vestas employees work at Bull Hill daily..."

"An average [311 foot] turbine climb takes around 10 minutes and is performed two to four times per week."

"in a 2–MW wind turbine, the weight of the rotor and the tower is typically about 250 tons [...] a kite generator of the same rated power can be obtained using a 500–m2 kite and cables 1000–m long, witha total weight of about 2 tons only."