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Compare wind turbine specifications side by side. Select 2-3 turbines from our database of 59 models to find the right fit for your wind site.
Choose turbines from the selectors above to see a detailed side-by-side specification comparison.
Specific power (W/m²) is the single most important metric when matching a turbine to a site. It is calculated by dividing the turbine's rated power by its swept area. A lower specific power means a larger rotor relative to the generator, which captures more energy at lower wind speeds.
Low Specific Power
Best for low-wind sites (IEC Class III, mean wind < 7.5 m/s). Higher capacity factors in moderate conditions.
Medium Specific Power
Versatile for medium-wind sites (IEC Class II, mean wind 7.5-8.5 m/s). Good balance of cost and output.
High Specific Power
Optimized for high-wind sites (IEC Class I, mean wind > 8.5 m/s). Maximum rated output in strong winds.
Rotor Diameter
Larger rotors sweep more area and capture more wind energy. Modern utility-scale turbines range from 82 m to over 170 m in diameter. Larger rotors generally mean higher capacity factors, especially in lower wind regimes.
Hub Height
Taller towers access stronger, more consistent winds. Most turbines offer multiple hub height options to match local conditions. A 20 m increase in hub height can increase annual energy production by 5-10%.
IEC Wind Class
The IEC classification system (I, II, III) indicates the wind conditions a turbine is designed for. Class I handles the highest wind speeds, while Class III is designed for lower wind resources. The letter suffix (a, b, c) indicates turbulence intensity.
Drivetrain Type
Geared drivetrains use a gearbox to increase rotational speed for the generator. Direct-drive turbines eliminate the gearbox, reducing mechanical complexity and maintenance but typically requiring larger, heavier generators.