Norsepower
Rotor sails for large ships: spinning composite cylinders that turn wind into thrust via the Magnus effect, cutting fuel use and emissions. The 1920s Flettner rotor is public domain — the company's IP is what made it commercially viable: tiltable composite construction so ships clear bridges and cranes, low parasitic power draw, and automated control integrated with the ship's systems, covered by 46+ patents and performance verified by NAPA. Largest installed base of commercial rotor sails worldwide. Group: parent Norsepower Oy Ltd plus two wholly owned subsidiaries — Norsepower Asia Pacific Ltd (Hong Kong) and its subsidiary Norsepower Marine Technology (Yancheng) Co. Ltd (China) — with its own rotor sail factory in Dafeng, kept in-house to retain control of the IPR.
The row
- Stage
- In market — Product is being sold
- Location
- Helsinki
- Founded
- 2012
- Business ID
- 2506251-5 · Finnish trade register
- Funding
- Capital invested €31.7M (5/2025) + Springvest share issue 5/2025, up to ~€8M
Links
Where this sits on the map
Norsepower is one of 32 companies in Energy, Climate & Environment. The others:
How this row was decided
Every row on this map is checked by hand against the trade register and the company's own material, and placed in the sector that best describes its business or its technology. Service firms and consultancies are left out, however advanced the technology they work with — the test is where the revenue comes from. Only funding figures the company or its investor has published are shown. The full rules are on the landscape ↗