Our roof-mounted Vertical Axis Wind Turbines (VAWTs) offer a practical solution for urban and commercial renewable energy generation. Designed to capture wind from any direction, they are particularly well suited to the complex and turbulent airflow commonly found around buildings.
Their compact footprint, low rotational speed and low-noise operation are intended to support integration with suitable rooftop structures, subject to site-specific assessment. By generating clean energy on-site, Flag Turbines can reduce reliance on grid electricity, lower operational carbon emissions and contribute to building energy-efficiency targets.
Used alongside solar and battery storage where appropriate, roof-mounted Flag Turbines can form part of a balanced, year-round renewable energy system for modern low-carbon buildings.
At Flag Turbines, we prioritize bird safety. Our turbines operate at significantly lower rotational speeds, typically around 20 to 30 rpm, and present a large, easily visible blade profile compared with traditional propeller-style turbines. These characteristics are designed to minimize collision risk and give birds more opportunity to detect and avoid the rotor.
Our turbines avoid rare-earth magnets and large, solid composite blades. Their modular construction allows parts to be repaired or replaced rather than the whole turbine, and they are designed to be recyclable at end of life.
Dimensions (m, duh): 3×3 / 4×4
Weight (kg): 30kg / 40 kg / 50 kg
Output: 230VAC, 50 Hz, 16A
Generator power (kW): 2 / 3,5
Minimum wind: 6 km/h or 4 mph
Maximum wind: 70 km/h or 45 mph
Brake: Aerodynamic
Environmental noise: 2002/49/EC
Safety: IEC-61400