KW20 Wind Turbine
A 20 kW small wind turbine: unobtrusive, delivering excellent power day and night.
13.1mRotor size
20mHub height
20kWRated power
approx. 11.5m/sRated wind speed
3 yearsService interval
Operational Integrity
Explore the KW20
Hinged top cover
The gas-assisted top cover hinges open, giving access to the service areas without the complexity of removing covers.
More on this: Hinged top coverDirect drive permanent magnet generator
No gearbox to wear out or create noise. It is naturally air-cooled, with no liquid coolant and no cooling fans.
More on this: Direct drive permanent magnet generatorVariable pitch system
The blade angle is adjusted automatically to work efficiently at all wind speeds. An electro-mechanical actuator does the work, and pitching the blades is how the turbine stops in an emergency.
More on this: Variable pitch systemWorking platform
The service ladder and working platforms give service technicians safe access.
More on this: Working platformMotorised yaw system
Automatic alignment with the wind direction. Yaw brakes prevent unwanted nacelle movement in high winds.
More on this: Motorised yaw systemBlades
Three blades.
13.1m rotor size
Ladder access system
Enables many maintenance and service operations to be completed without lowering the turbine to the ground.
More on this: Ladder access systemTower tilt system
To allow easy removal or installation of the turbine to the tower. A hydraulic system tilts the tower up or down from the base, with no need for cranes.
More on this: Tower tilt system
Producing Power day and night
Driving More Power With Faster ROI
Introducing the Kodair Wind range of small wind turbines. Our current offerings are the KW20 and the KW30. These turbines are built on the same platform and consist of the following features:
Operational Integrity
-
No gearbox
Direct drive permanent magnet generator
No gearbox to wear out or create noise. The rotor shaft is the generator shaft, so there are fewer moving parts, lower losses and no gearbox oil to change or leak.
It is naturally air-cooled, with no liquid coolant and no cooling fans.
-
Maximum power
Variable pitch system
The blade angle is adjusted automatically to work efficiently at all wind speeds, and protects the turbine from over-speed in high winds.
An electro-mechanical actuator does the work, with no hydraulic oil to leak. Pitching the blades is also how the turbine stops in an emergency, and an extra fail-safe system parks the blades if the pitch system fails (patent pending).
-
Improves energy capture
Motorised yaw system
Automatic alignment with the wind direction captures more energy and reduces loads on the machine.
Yaw brakes hold the nacelle steady in high winds, and a slip ring means the tower cables never get twisted.
-
Reduces manual maintenance
Automatic lubrication system
Extends service periods to 3 years. It delivers consistent lubrication to key moving parts such as bearings, blade pitch systems and yaw drives, for longer component life.
-
Safe access
Ladder access system
Enables many maintenance and service operations to be completed without lowering the turbine to the ground. The ladder has a fall-arrest system, with working platforms at the top.
-
Ease of access
Hinged top cover
The gas-assisted top cover hinges open, giving access to the service areas without the complexity of removing covers.
-
No need for cranes
Tower tilt system
To allow easy removal or installation of the turbine to the tower. Instead of needing a crane, a hydraulic system tilts the tower up or down from the base, and for the larger 6-year service the nacelle can be lowered to the ground.
More KW20 features
Independently Verified Power Curve
Easily predict annual production.
Certified Turbine
Certified to ACP 101 (Class II) through SWCC for power performance, noise, durability and structural integrity, and CE marked. The generator and inverter are UL-approved; full UL certification is underway for the USA and Canada.
13.1m Rotor Size
Reach full power 20kW at approx. 11.5m/s wind speed.
KW20 Power Curve
The above graphs show the performance of the KW20 wind turbine as recorded during Power Performance Monitoring as part of SWCC wind turbine certification. They are independently validated and reports are available upon request.
Technical specification
KW20 Specifications
| Rated power | 20 kW |
|---|---|
| Annual energy production | 58,508 kWh a year at a 6 m/s average wind speed (certified) |
| Cut-in wind speed | 2.5 m/s |
| Rated wind speed | Approx. 11.5 m/s |
| Survival wind speed | 52.5 m/s (Class II) |
| Rotor diameter | 13.1 m |
| Swept area | 135 m² |
| Blades | 3, composite |
| Hub height | 20 m, tubular hydraulic tilting tower |
| Generator | Air cooled direct drive permanent magnet, no gearbox |
| Pitch and yaw | Active pitch (electro-mechanical) and active yaw |
| Noise level | 41.8 dB(A) |
| Service interval | 3 years |
| Grid connection | Single-phase or three-phase |
| Certification | ACP 101 Class II (IEC 61400) through SWCC (certificate SWCC-22-02); CE marked (EU Machinery Directive) |
| UL | Generator and inverter UL-approved; full UL certification underway for the USA and Canada |
| Manufacturing | ISO 9001-certified facility |
| Design life | 20+ years |
CO₂: at 58,508 kWh a year, one KW20 saves about 12 tonnes of CO₂ a year, based on the SEAI 2025 provisional emission factor for electricity in Ireland (197.8 g CO₂ per kWh).
Running the numbers
Incredible power with an impressive return on investment
Leading Power Output
Leading power with an impressive return on investment
State of the Art Technology
Our team has refined this turbine design over 20 years to release our newest state-of-the-art turbine in 2024.