What is the VoltAero Project?
VoltAero is shaking up the aviation world with its innovative approach to hybrid-electric aircraft. At the heart of this venture is the Cassio family, a unique lineup of electric-hybrid planes designed for regional transportation. These aircraft are not just about flying—they’re about flying safe, quiet, and green. Founded in 2017 by pioneers with over 50 years of combined expertise, VoltAero aims to revolutionize general aviation by covering everything from development and testing to certification and full aircraft assembly. The Cassio models seat between four and ten passengers, offering a fresh take on eco-friendly flight with hybrid-electric and fully electric propulsion modes.
Main Benefits of the Cassio 330 Electric-Hybrid Aircraft
The Cassio 330 stands out with its cutting-edge technology and thoughtful design. Here’s what makes it tick:
- Seats 5 to 12 passengers comfortably in a spacious, modular cabin
- Uses a series-hybrid propulsion system with “pusher” electric motors on the aft fuselage
- Thermal engine acts as a range extender by recharging batteries during cruise
- Operates on all-electric power during taxi, takeoff, and initial flight phases for quiet, eco-efficient performance
- Features fully redundant propulsion architecture for enhanced operational safety
- Incorporates Safran ENGINeUS™ smart electric motors with “half-engine-inoperative” functionality
- Designed to meet European Union Aviation Safety Agency’s (EASA) CS.23 certification standards
- Large door for easy access, especially for passengers with reduced mobility
The Evolution of Cassio’s Propulsion Architecture
Originally, the Cassio 330 featured a parallel-hybrid setup, combining an electric motor and thermal engine inline to drive a single propeller. But VoltAero switched gears to a series-hybrid architecture, placing electric motors on each side of the aft fuselage and using the thermal engine solely as a range extender. This change wasn’t just for show—it simplifies the certification process and boosts safety with a fully redundant system. Plus, it aligns perfectly with EASA’s latest certification specs, making the Cassio 330 a serious contender for commercial air transport.
Innovations Behind the HPU 210 Hybrid Power Unit
VoltAero’s HPU 210 is a game-changer for homebuilt and kit-built aircraft communities. Launched in 2025, this hybrid powertrain blends a high-performance thermal engine with an advanced electric motor, delivering what VoltAero calls “push-to-perform” functionality. It’s not just about power—it’s about flexibility and efficiency, opening new doors for pilots and builders looking to embrace hybrid-electric technology without compromising on performance.
Strategic Partnerships and Industry Collaborations
VoltAero’s journey is fueled by strong partnerships. In 2025, Malaysia’s SEDC Energy and France’s ACI Groupe joined forces with VoltAero, aiming to establish a Cassio assembly and innovation center. These strategic investors bring more than capital—they bring a broader partnership vision that supports VoltAero’s growth and innovation ambitions. Collaborations like these are crucial for scaling production and accelerating the adoption of hybrid-electric aviation.
Project Impact on Sustainable Development Goals (SDGs)
- SDG 7: Affordable and Clean Energy – Promoting electric propulsion to reduce fossil fuel dependence
- SDG 9: Industry, Innovation, and Infrastructure – Pioneering new aviation technologies and manufacturing processes
- SDG 11: Sustainable Cities and Communities – Enabling quieter, cleaner regional air transport
- SDG 13: Climate Action – Lowering carbon emissions through hybrid-electric flight
- SDG 17: Partnerships for the Goals – Building strategic alliances for sustainable aviation development
Looking Ahead: The Future of Hybrid-Electric Aviation
VoltAero is not just building aircraft; it’s crafting the future of flight. With the Cassio 330’s airworthiness certification underway and a production-ready design that embraces safety, efficiency, and eco-friendliness, the company is poised to transform regional air travel. The modular cabin design means the aircraft can flexibly serve passengers, cargo, or even medical evacuation missions. As the aviation industry pushes toward sustainability, VoltAero’s hybrid-electric approach offers a promising path forward—quiet, clean, and ready to take off.
