The vision of a spinning, spool-shaped turbine designed to harness winds from altitudes of 300 metres and more is taking shape for a maiden 100-kilowatt (kW) installation next year — and a one-megawatt (MW) model on the horizon.

Canadian renewable-energy technology company Magenn Power’s high-altitude MARS (Magenn Air Rotors System) turbine concept rose from the ashes of a 30-year-old spherical airship design that was the brainchild of Magenn founder and chief technology officer Fred Ferguson.

Developed