Development update: we are in our final funding round to build our first commercial-ready Power Towers.Get involved →
The innovation

A turbine built for real-world wind.

Most small turbines are designed for strong winds. Ours is designed for the gentle breezes that blow most of the time — and keeps performing as the wind picks up.

Variable-geometry VAWT

Two turbines in one.

Our patented vertical-axis design changes the way its blades meet the wind, moving from drag to lift as the wind speed increases.

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Low wind: drag mode
In light winds the blades behave like a Savonius rotor, catching the wind like a cup. This gives strong starting torque, so the turbine starts turning early and generates for more hours of the day.
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Stronger wind: lift mode
As the wind builds, the blades move into a Darrieus-style lift configuration — like an aircraft wing — for higher efficiency and stronger output across real-world wind conditions.
The early-start advantage

More hours generating, not just higher peaks.

Traditional small turbines only start producing useful power at 3–4 m/s. The Aventus turbine is designed to cut in at around 2–2.5 m/s and ramp up steeply from there.

Across much of South Africa, the wind blows at 2–5 m/s for a large part of the year. Capturing that band is where the real energy is — consistency beats peak performance.

02468101214 Wind speed (m/s) Power output Early-start zone Aventus Aero turbine Traditional small turbine

Illustrative curve showing the design intent. Measured curves will be published from our commercial units.

The synergy

Wind and sun complete each other.

Solar peaks at midday; wind often blows at night, in winter and during storms. Together they deliver far more usable energy than either alone.

~20%
Typical solar capacity factor
~25–40%
Projected Aventus wind capacity factor
45–60%
Projected combined hybrid utilisation — like a 1–2 kW always-on power plant
How it was developed

Engineered from first principles.

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Hands-on prototypes
Several working prototypes have been designed and built in-house, each refining the blades, rotor and mechanism.
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Own wind tunnel
Blade shapes are tested and optimised in our own wind tunnel, resulting in a custom aerofoil tuned for this design.
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Built for manufacture
Simple, straight, constant-section blades and a sturdy lattice tower keep the design robust, affordable and locally manufacturable.

Be part of the first Power Towers.

We are raising our final round to build our first commercial-ready units. Invest, fund, host a pilot or simply follow along.

Get involved →