aeolian ecologism ecology energy wind wind energy wind farm wind power wind powered wind turbine windmill air electricity gigawatt horizon kilowatt kilowatthour megawatt off-shore sea sky turbines water waves wind mill blades blow generator perspective power sustainable tower turbine zenith afterglow atmosphere Ecoregion Natural landscape Red sky at morning backyard blue blue-sky circular controlled directional equipment fan farm farming-equipment gray grey model old perspectives pump replica semi-rural silver spokes tail-blade water-pump wheels wind-powered cloud evening mill silhouette summer sundown chain chains outback paint painted papyrus peeling peeling-paint pond pool rural white generate generation green renewable sunset