“…The single wind turbine power P wt depends on the wind conditions (wind speed, direction, intensity and probability) and on turbine's type -rotor and tower size, rated power, thrust coefficient, etc. (Kongnam et al, 2009;Mosetti et al, 1994;Marmidis et al, 2008). The wind park electrical energy production for a year can be estimated by using some practically determined nominal power utilization coefficient μ (Lepa et al, 2008) of the total wind park installed power.…”