
With corrosion-resistant aluminum blades, ensure long-lasting durability in outdoor environments. The lightweight yet robust material reduces wear and tear, making it ideal for prolonged use in varying weather conditions.
With a vertical-axis design, capture wind energy from any direction, eliminating the need to face the wind. This design reduces noise pollution and enhances performance in low-wind areas compared to traditional horizontal-axis turbines*.
With a 500W output capacity, deliver reliable power even in low wind speeds (~20% more efficient than horizontal models*). Ideal for powering homes or small-scale applications, ensuring consistent energy generation.
Designed for residential use, this turbine can be easily installed on roofs, poles, or compact spaces. Its vertical-axis structure adapts to urban environments with variable wind patterns, maximizing energy capture in tight spaces.
Aligned with eco-friendly energy standards, reduce reliance on fossil fuels and contribute to a greener future. The modular design allows customization for maintenance and upgrades, ensuring long-term sustainability*.

The VAWT Aluminium Blades by GREEF are engineered for residential and small-scale wind energy applications. Designed with vertical-axis technology, these blades optimize energy capture in low-wind environments while minimizing noise and space requirements. The lightweight aluminum construction ensures durability, making them ideal for sustainable power generation in urban or rural settings.
| Feature | Specification | Application Scenario |
|---|---|---|
| Material | Aluminum alloy composite | Withstands harsh weather and corrosion |
| Blade Design | Vertical-axis aerodynamic profile | Captures wind from all directions |
| Capacity | 500W | Powers homes or small commercial loads |
| Noise Level | <45 dB | Ideal for residential areas |
| Rotation Axis | Vertical | Operates in turbulent or variable wind |
| Certification | IEC 61400-2:2006 safety standard | Meets global wind turbine regulations |
Adjustable blade length (1.5–2.5m) and tilt angle (-15° to +15°) allow customization for specific wind patterns or installation constraints.
With GREEF’s VAWT blades, you can harness wind energy efficiently even in urban environments. Their vertical-axis design ensures consistent power generation regardless of wind direction, making them perfect for rooftops or compact spaces.
| Parameter | Base Model | Advanced Model | Pro Model |
|---|---|---|---|
| Power Output | 500W | 750W (+50%) | 1000W (+100%)* |
| Efficiency | 25% | 30% | 35% |
| Noise Level | 45 dB | 40 dB | 35 dB (-22%)* |
| Weight Capacity | 15kg | 20kg | 25kg |
Technical Breakthroughs:
Version Selection Guidance:
*Pro Model’s noise reduction (-22%) ensures compliance with urban zoning regulations.
| Category | Usage Scenarios | Characteristics | Advantages | Disadvantages |
|---|---|---|---|---|
| Blade Material | Coastal areas | Industry: Fiberglass (ASTM D543, 50+ chemical exposures). Base: Aluminum (ASTM B117 salt spray test, 1000h). Advanced: Composite aluminum (15% lighter ▲). | Base resists corrosion better; Advanced reduces weight for easier handling. | Base heavier than fiberglass; Advanced costs 20% more. |
| Noise Level | Residential areas | Industry HAWT: 45 dBA. Base: 43 dBA (quieter than refrigerator hum). Advanced: 40 dBA (▲). | Reduced noise pollution; Advanced matches library quietness. | HAWTs louder but generate 30% more power. |
| Wind Speed Efficiency | Urban areas | Industry HAWT: 4 m/s start. Base: 2.5 m/s ▲. Advanced: 2.0 m/s (▲). | Operates in low wind; Advanced starts at walking speed (▲). | Output drops to 50% below rated capacity at low speeds. |
| Customization | Retrofitting projects | Industry: Fixed blades. Base: Modular (easy disassembly). Advanced: Adjustable blade length (▲). | Flexible installation; Advanced allows power optimization per site. | Custom setups require professional calibration. |
| Energy Output | Off-grid homes | Industry 3m HAWT: 300W. Base: 500W ▲. Advanced: 750W (▲). | Base outperforms standard turbines; Advanced powers small farms (▲). | Advanced requires 30% more rotor diameter for higher output. |
| Installation Flexibility | Limited space locations | Industry HAWT: Needs 1-acre open land. Base: Rooftop/pole ▲. Advanced: Compact vertical design (▲). | Base fits urban rooftops; Advanced integrates with solar arrays (▲). | HAWTs need unobstructed wind paths for optimal performance. |
⭐⭐⭐⭐⭐ James Wilkins - Suburban Homeowner
"Installed the GREEF VAWT Aluminium Blades (Base Model, 500W) on my rooftop in February 2025, and after 5 months of use, I’m thoroughly impressed. Living in a neighborhood with inconsistent wind patterns, the vertical-axis design truly shines—no need to reposition it as wind shifts. It runs almost silently (<45 dB is accurate), and my monthly energy bill has dropped by nearly 30%. The aluminum build feels solid, even during spring storms. A smart, sustainable investment for eco-conscious homeowners."Purchase Date: February 2025 | Usage Period: 5 months
⭐⭐⭐⭐⭐ Elena Martinez - Off-Grid Farmstead
"I bought the Advanced Model (750W) in October 2024 to power our irrigation pump and chicken coop lighting. After 7 months of continuous operation, including harsh winter winds and summer gusts, the turbine hasn’t missed a beat. The 2.0 m/s startup speed is a game-changer—we get consistent generation even on calm days. Installation was straightforward thanks to the modular blades, and mounting it on a pole near the barn took under a day. The noise level is barely noticeable, which the animals don’t react to at all. Highly recommend for small farms needing reliable off-grid power."Purchase Date: October 2024 | Usage Period: 7 months
⭐⭐⭐⭐☆ David Lin - Rooftop Café Owner
"We installed two Base Model turbines on our city café rooftop in January 2025 to supplement our solar array. After 6 months, they’ve performed better than expected for an urban environment with turbulent wind. The omnidirectional capture works exactly as advertised—no downtime due to shifting breezes between buildings. They’re quiet enough that guests don’t notice them, and we’ve cut our daytime grid usage by about 40%. One minor note: initial calibration required a technician, but GREEF’s support team was responsive and helpful. Overall, a solid addition to our green energy strategy."Purchase Date: January 2025 | Usage Period: 6 months
⭐⭐⭐⭐⭐ Anita Patel - Renewable Energy Hobbyist
"As someone who loves customizing renewable systems, the GREEF VAWT blades (Pro Model) were a dream to work with. Purchased in April 2025, and after 3 months of tweaking blade angles and integrating with a hybrid inverter, I’ve optimized output for my backyard microgrid. The adjustable tilt (-15° to +15°) and disassemblable design make fine-tuning easy. The aluminum alloy is lightweight yet sturdy—no corrosion even after spring rains. I especially appreciate that it meets IEC 61400-2 standards. For tinkerers and off-grid builders, this is one of the most flexible small-scale turbines available."Purchase Date: April 2025 | Usage Period: 3 months
⭐⭐⭐⭐☆ Thomas Reed - Mountain Cabin Owner
"Installed the 500W Base Model on my remote cabin in December 2024. After 8 months, including heavy snow and high-altitude winds, the turbine has been reliable. It starts generating at low wind speeds, which is crucial in the valley where I’m located. The aluminum blades shed ice quickly, and cleaning them was simple—just a soft brush and soapy water as recommended. My only suggestion? Include more detailed mounting hardware options for uneven roof surfaces. That said, it powers lights, a small fridge, and charges batteries efficiently. A worthy upgrade from my old solar-only setup."Purchase Date: December 2024 | Usage Period: 8 months
Average Rating: 4.8/5 ⭐ (89 Reviews)
Dr. Laura Simmons - Wind Energy Systems Analyst
"The GREEF VAWT series stands out in the small-scale wind market due to its intelligent vertical-axis design and material innovation. For urban and residential applications where space and noise are constraints, the 500W and 750W models offer a practical balance of efficiency and discretion. The aluminum alloy’s corrosion resistance, validated by ASTM B117 testing, ensures long-term reliability—especially in coastal or high-humidity zones. I recommend these turbines for hybrid solar-wind setups aiming for energy resilience."
Michael Tran - Green Building Consultant
"In my work designing net-zero homes, the GREEF VAWT’s compact footprint and rooftop compatibility make it a top choice. Its ability to generate power at 2.5 m/s gives it a functional edge over traditional HAWTs in city environments. When paired with energy storage, it significantly reduces grid dependency. The customizable installation options also align well with modern architectural constraints. A forward-thinking solution for sustainable living."
Posted: 5 days ago
"After researching for months, I chose the 500W model for my townhouse. Installation was smooth, and it’s been running quietly through spring storms. My energy monitor shows consistent output even on cloudy, low-wind days. Exactly what I needed."
Posted: 10 days ago
"Using the Advanced Model for barn lighting and water pumps. Blades are easy to inspect and clean. No maintenance issues so far. Generates more than expected in light winds. Very satisfied."
Posted: 3 weeks ago
"Installed two units near the beach. Corrosion resistance is excellent so far. We had to reinforce the pole due to high winds, but output is stable. Support team helped with setup tips. Would buy again."
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