Our technology is composed of two key elements: a flying wing and a ground station.
The wing is helium-filled (lighter-than-air) and cylindrical. The station works both as a generator (to generate electricity) and a motor (to control the wing during the flight). These two components are connected with four high-resistance technical cables.
For all our products, the ground stations are integrated in standard containers (20ft or 40ft). The number and size of containers scale with the system, allowing fast, flexible, and easy deployment.
The wing is first released in the air. Once it reaches high altitude (300m to 500m), we start spinning it (300 rpm) using the cables connected to the ground station. The spin in the wing will generate the Magnus effect, hence pulling on the cables. This mechanical force is converted into electricity in the ground station.
The ground station also ensures that the wing flies along a computer-generated path. This path is an horizontal figure-eight pattern of about 500m span. It allows two phases during the flight:
To see it in action, you can watch our demo on YouTube.
It differentiates from traditional wind turbines in three ways:
You’ve likely seen the Magnus Effect in action already: in sports, when a soccer ball « bends, » a tennis ball spins into the court, or a baseball curves mid-air. Indeed, when a spinning round-shaped object moves through the air, a sideways force is generated.
This is scientifically explained by fluid dynamics: faster-moving fluid corresponds to lower pressure, and slower-moving fluid corresponds to higher pressure.
In our case, the wing has a cylindrical shape and is spinning while moving through the air. Therefore, our system harnesses the Magnus effect (sideways mechanical force) to pull on the cables and convert it to electricity.
Yes. Our technology is protected by two granted patents covering key components of our tethered spinning airborne wing.
Because our wing is lighter-than-air, it doesn’t require ground-level wind for takeoff. It fully operates between 3 and 30 m/s. At 300m altitude, wind blows within this range of speeds almost 24/7 (more than 90% on average). We reach 100% of our nominal capacity at a wind speed of 9 m/s.
Our solution outperforms wind turbines on every key aspect:
Yes. Because our wing is lighter-than-air, take-off, flight and landing are safe:
Yes. Because our wing is lighter-than-air, it makes it crash-proof by design. Outside the extreme conditions mentioned above, we identified and solved for 3 potential risks for our balloon :
Yes. Thanks to its cylindrical shape, our wing has an excellent response to turbulent wind conditions and gusts. There is indeed no need to control its pitch because the air will flow around the kite instead of against it.
If there is a hurricane alert, we simply lower the MAG and secure it to the ground station. This makes the MAG usable in hurricane-risk zones, unlike traditional wind turbines. The entire process is fully automated, ensuring safe operation and system protection at all times.
Our system is designed to resist any extreme conditions:
Power: 100 kW
LCOE: 90 ~110 € / MWh
Dimensions: Ø4 m × 25 m
Installation time: 1-2 days (assuming the electrical connection has been made available in advance)
The MAG25 is designed to fit the diesel microgrid market and the decentralized grid-connected market.
Replacing diesel fuel with renewable energy is a 4 B€ market opportunity for renewable energy in APAC, North America, Europe, Middle East regions. A MAG25 produces renewable electricity locally, thus reducing the amount of fuel burn.
Decentralized Renewable Energy (DRE) is a 50 B€ market opportunity for decentralized grid connected systems.
The MAG25 will be launched in 2026.
Power: 2 MW units, grouped in 10 ~ 100 MW wind farms
LCOE: 28 ~40 € / MWh
Dimensions: Ø10 m × 80 m
Installation time: it will be deployed in utility-scale energy farms. Therefore, the time of deployment will depend on the capacity installed.
The MAG80 will address the utility market, delivering reliable and clean energy to the grid. The utilities represent a 128 B€ opportunity for renewable energy in APAC, North America, Europe, Middle East regions
The MAG25 will be launched in late 2027.
Yes. The preferred option for an offshore installation is a floating foundation. Unlike traditional wind turbines, the MAG does not come with a large tower. Therefore, we require significantly smaller foundations at equivalent capacity installed.
Yes. Thanks to its very low land use, our products can operate in remote and sensitive locations where traditional wind turbines cannot be installed (off-grid areas, industrial sites, protected zones etc.).
The maintenance for our products will be much easier to conduct than for traditional wind turbines since every step will happen at ground level. There will be no need for specifically trained/certified technicians working at heights.
For the wing and the cables we anticipate quarterly inspections and helium refills if needed. For the ground stations:
Our products are designed to be fully functional for at least 15 years.
Like other Airborne Wind Energy Systems (AWES), our technology falls under regulations sitting at the crossroads of aviation safety and energy norms. Wind fisher’s scope in regulation encompasses product certification and project permitting.
Very close. The certification process is handled by the European Union Aviation Safety Agency (EASA). Our product is classified as a “Tethered gas balloon – CS31-TGB” by the EASA. We already validated 3 of the 4 criteria to be certified:
We are highly confident our solution will validate this 4th criteria since we are actively working towards this with A-NSE, a French company owning many products that have been certified under the same AMC process.
As long as our product is not certified by the EASA, our system can operate under a Specific Operation Risk Assessment (SORA)-based derogation on a site-by-site basis. Main requirements to qualify for a derogation are:
Once our product is certified, the MAG will be classified as an aerial obstacle. Authorizations are then site-specific, fast and highly predictable (aligned with a European framework).
If it flies in Europe, it flies anywhere. Regulatory processes outside Europe are country-specific but typically less complex. In the USA, these processes are handled at federal-level by the Federal Aviation Administration . Tropical countries frequently
offer lighter regulation than the EU.
Yes. Compared to a traditional wind turbine, our system uses 90% less materials for the same installed capacity. This significantly reduces emissions associated with the entire lifecycle of the solution, from the extraction of raw materials to its disposal.
90% of the system components are made with recyclable and recycled material, making it a clean and reversible solution wherever it’s deployed.
No. Unlike traditional wind turbines, our ground stations are compact and do not require deep concrete foundations. It can be installed without heavy works, leaving the soil and local ecosystem untouched.
No. Our unique design results in significantly lower noise impact compared to traditional wind turbines (cylindrical shape and low traveling speed). It also isn’t visually disturbing:
No. Our technology is designed to minimize impact on nature and fits easily in sensitive areas. It flies at high altitude without blades, at very low speed, and with very little noise. It significantly reduces risks for birds and animals.