About us

We deliver zero-emission powertrains for boats

Electrical powertrains since 1999 

Everything started in the late 90’s when a group of Swedish engineers started a company to produce a series of electrical powertrain system to fill the demand that had started to emerge in the Swedish market.

The company got a lot of attention when it managed to produce a system with high efficiency while still providing comfort and safety. Stefan Larsson, the owner of the companyalso invented a system for propeller charging with a folding propeller which was subsequently patentedThis design is still used to this daymaking completely self-sufficient systems possible

With sufficient power when needed

Our motors are constant speed controlled, which means that they maintain their speed almost regardless of load. This provides a quiet, smooth propulsion while allowing the motor to supply more power when needed and less when it is not needed. In high seas, the motor is far stronger moving up the swell then on the way down.  

The motors’ high torque enables them to carry propeller with a large blade area. This in turn provides a great deal of power that is also direct. This is especially noticeable in difficult wave and wind conditions and when manoeuvring in port.

With an electric inboard, you have an efficient, renewable and sustainable energy source on board. Powerful, silent and safe. GreenStar’s proven and complete electric propulsion systems are design to deliver maximum power and operating time.


  • Single or dual assambly, straight shaft or sail drive.
  • Hybrid, propeller charge. there are multiple options.
  • Coupled with minimal maintenence and low operating cost, you will undoubtedly see the benefits for your boat.

Team GSM Electric

Åsa Snaar

CEO, Marketing



Priyanka Uniyal

Software developer

Helené Furness

Digital marketing communikation


Sebastian Ståhl

Software developer