The alternative power portion of Canadian Tires catalogue is growing! Based on their monthly power charts AirX wind generators will provide you with 45-65 kWh a month based on a 6.33 m/s average wind speed (albeit at 30m elevation). The average, 55kWH, times the rate on our last power bill, $0.215/kWh suggests a savings of $12 a month. Or a payback period of 5 years not calculating depreciation, increases in power costs (a good bet) and what not. Sounds like a pretty good deal to me, in fact putting 2-4 turbines up (if you have the space) would make even more sense.