I live in pampa tx in America and there is hundreds of them running every once in a wile ill see one or two of them off but all others on. Y is it that we have so much of these wind turbines and onle one or two are off every week???,(reply>), +Antonio Moreno Just a guess, but it's possible that they have a rota where they take one or two out of service every week for routine maintenance.,(reply>), True that 