Freen-20 Vertical-Axis Small Wind Turbine 20 kW
Compact and efficient 20 kW Darrieus-type wind turbine built for commercial and community energy systems, seamlessly integrating with grid and off-grid installations.
Designed for Performance, Built to Last
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Rated Power:
20 kW
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Operational Wind Speed:
3.5 m/s to 17.0 m/s
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Turbine Height:
24.7 m
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Life Cycle:
20 years
Freen-20 Features: Innovation in Every Detail
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Easy-to-Install Foundation
20-kW vertical axis wind turbine is suitable for installation on a prefabricated non-buried foundation that is simple to install, reducing setup time and ensuring stability in diverse site conditions. It is designed for installation on a flat prepared surface (soil, asphalt, concrete, crushed stone).
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Eco-Safe and Resilient Soft Blades
The specially designed soft blades minimize noise and go easy on wildlife by reducing collision risks. The aerodynamic profile ensures optimal performance without compromising safety. Thanks to the lightweight wing construction, strong gusts of hurricane winds do not lead to fatal structural destruction, or damage to surrounding objects.
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Durable, High-Performance Blades
The Freen-20 blades are designed to excel in extreme environments. A protective film resists sand corrosion, while low water absorption materials prevent damage from freezing and defrosting cycles. UV-resistant PET sheathing ensures long-term performance under intense sunlight, making the blades reliable and efficient in any condition.
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Low-Speed Operation (max 108 RPM)
Operating at maximum 108 RPM, Freen-20 prioritizes safety for both humans and wildlife. The reduced rotation speed prevents harm to fauna while ensuring consistent power generation even in low wind conditions.
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Efficient, Low-Friction Design
Our turbine’s innovative low-friction components and direct torque transmission drive maximize efficiency and minimize wear. This reduces maintenance needs and ensures a longer operational lifespan.
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Perfectly Proportioned and Adaptable
The Freen-20 features the perfect ratio of blade diameter to total turbine height, ensuring effective energy production at various sites. The turbine uses an innovative inflation mechanism that dynamically adjusts the diameter and shape of the turbine during rotation. This allows for better adaptability to wind speeds, enhancing efficiency and overall energy capture.
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Sustainable Metal Construction
Built from recyclable metals, Freen-20 is designed with sustainability in mind. After reaching its lifespan, components can be easily recycled, contributing to a circular economy.
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Simplified, Gearbox-Free Design
By eliminating the gearbox, Freen-20 reduces energy loss between the generator and rotor, decreases noise, eliminates the need for transmission oil, and significantly lowers mechanical wear.
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No Wind Orientation Mechanism
Freen-20’s vertical-axis design eliminates the need for a wind orientation mechanism. This ensures seamless operation regardless of wind direction, with fewer moving parts for added reliability.
Freen-20: Technical Highlights for Maximum Output
The Freen-20 is a wind power converter with rated power of 20 kW, featuring a Darrieus rotor and variable operating speed. The optimal ratio of blade diameter to total turbine height, and innovative design optimized for efficiency ensure effective energy production at various installation sites.
Power Curve
Technical Parameters
- Turbine type VAWT (Vertical axis wind turbine)
- Rated power 20 kW
- Turbine diameter 5.896 m
- Turbine diameter in working mode up to 7.0 m
- Tower height 12 m
- Total turbine height 24.702 m
- Turbine weight 2500 kg
- Tower weight 2500 kg
- Turbine concept gearless, variable speed
- Rotor type Darrieus rotor
- Rotation direction counter clockwise
- Number of blades 9
- Number of wings 3
- Swept surface area 52 m²
- Blade material metal cable, polyurethane foam
- Turbine speed variable 35-108 rpm
- Generator Freen permanent magnet direct drive synchronous generator
- Grid connection CLEANVERTER TL inverter
- Brake System electromagnetic brake
- Cut-in wind speed 3.5 m/s
- Rated wind speed 14.9 m/s
- Cut-out wind speed 17 m/s
- Survival wind speed 36 m/s
- Remote monitoring Freen SCADA
- Wind class IEC III, IV
- Noise level at 100 m 45 dB
- Surface installation area 35 m²
- Temperature range -25C° - +40C°
- Lifespan 20 years
Annual Energy Production
The AEP is calculated based on the distribution of wind speed according to Rayleigh, values K=2, t=15°C, P=1013 mbar, ρ=1.225 kg/m³
Savings That Add Up Over Time
See how Freen-20 outperforms other renewable energy systems in cost, carbon intensity, and efficiency.
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Freen-203
MWh
Large wind4500
MWh
Energy consumption
for the life cycle -
Freen-207
weeks
Large wind7-8
months
Energy
return -
Freen-2025g
CO2/kWh
solar41g
CO2/kWh
The life cycle
carbon intensity
The Edge of Innovation: Inside Freen-20
From revolutionary blade design to smart control systems, every feature is crafted for excellence.
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Revolutionary Blade Design
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High-Efficiency Generator System
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Intelligent Control and Automation
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State-of-the-Art Safety and Monitoring
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Designed for Longevity and Sustainability
For more detailed specifications, performance data, and technical drawings, download the full Freen-20 technical guide below.
Precision Engineering Meets Reliable Power
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Energy Efficiency
Freen-20 excels in energy output from low wind speeds, maximizing power generation efficiency and reducing dependency on fossil fuels.
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Adaptability
Seamless integration with both on-grid and off-grid systems, making it a versatile choice for both densely populated and remote locations.
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Sustainability
Innovative design ensures long lifespan, low noise, minimum impact on the wildlife, and easy recycling.
Small Wind Turbines Use Cases
Reliable Energy in Real-World Applications.
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Rural Greenhouses, Remote Farming and Livestock Operations:
Ideal for powering off-grid farming operations, the Freen-20 can drive water pumps for irrigation, electric fences, and ventilation systems in livestock areas without access to grid electricity, as well as greenhouse systems to regulate temperature and ventilation.
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Off-Grid Manufacturing Plants:
Especially useful for small-scale manufacturing setups in remote locations, providing a consistent and reliable energy supply to keep operations running smoothly without grid dependence.
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Rural and Remote Homes:
The Freen-20 can bring power to homes in remote locations, providing essential electricity for lighting, heating, and appliances, supporting off-grid living. Resorts and retreat facilities away from urban centers can use the Freen-20 to generate their own clean energy.
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Off-Grid Commercial Properties:
Enable businesses in remote areas to function efficiently with their own renewable energy source for lighting, heating, and cooling.
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Off-Grid Communication Towers:
The Freen-20 is particularly valuable for powering telecommunications equipment in remote areas, ensuring connectivity and service continuity across vast, underserved regions.
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Remote Healthcare Facilities and Clinics:
In off-grid regions, reliable power is crucial for medical facilities. The Freen-20 ensures that essential medical equipment operates without interruption, crucial for patient care during emergencies.
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Village and Community Power Systems:
Small communities can collectively use the Freen-20 to generate power for all residents, creating micro-grids that foster energy independence and resilience.
Power in Action: Proven Results
Installed at our manufacturing facility in Kohtla-Järve, Ida-Viru maakond, Estonia, Freen-20 is now delivering stable, renewable energy to power our operations. Rigorous testing confirmed its exceptional performance, including energy efficiency, structural stability, and adaptability to diverse wind conditions.
The successful operation of the Freen-20 at our facility demonstrates its capability to provide consistent green energy, reinforcing its role as an ideal solution for sustainable energy production in industrial and commercial settings.
From prototype to production, the Freen-20 has been developed and tested entirely in Estonia, showcasing its EU origin and high manufacturing standards.
Our production process adheres to internationally recognized certifications, including EN 1090-1, ISO 9001:2015, and ISO 3834-2, ensuring top-tier quality and reliability.
Your Questions, Answered
Everything you need to know about Freen-20.
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Freen offers the supply of Freen-20 wind turbines on a FOB basis at the Freen factory, Kohtla-Järve, Estonia.
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1 set of Freen-20 wind turbine includes*
- Turbine
- Inverter with controller
- Tower
- SCADA control system license
* additionally we can offer off-grid solution, battery storage and solar PV panels -
One Freen-20 cargo set consists of two units:
- one transport box on one pallet - inverter
- several boxes with turbine components on another pallet (it also consists of several packaging units)
Occupied space: LxWxH: 6.5 x 2.45 x 2.45 m. -
For unloading and storage, a dry, ventilated room is required. Unloading should be carried out with a loader with a lifting capacity of 8 tons. It is not allowed to stack components on top of each other.
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Freen 20kW wind turbine generator equipment is provided with a warranty of 2 years from the date of commissioning for all electronic elements and 5 years for all other components.
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How much is a 20kW wind turbine varies depending on factors such as installation costs, and site conditions. If you're looking for a 20kw wind turbine uk it's essential to consider not only the upfront 20kW wind turbine cost but also long-term savings on energy bills and potential government incentives. To get an accurate quote 20kW wind turbine generator for sale, specific information on 20kw wind turbine price uk and learn more about installation, contact us today.
Sustainable power starts here. Order Freen-20 to transform your energy system.
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