No owls are not omnivores because they eat mice,lizards,and snakes.
5.3 Operating Expenditures for Offshore Wind There has been no indication that expected operating expenditures for offshore wind projects have shifted between 2010 and 2013. The OpEx baseline for 2013 was assumed to be $40/MWh, equivalent to $136/kW/yr, with a range extending from $20/MWh to $70/MWh.
This is a per megawatt cost of about $3 million to $8 million. At the bottom end of the price scale, the Aleko WG450A Wind Turbine Generator with a 450 Watt 24 Volt capacity was selling for $402 in 2015.