Multi-Rotor Turbines

The idea of large-scale multi-rotor turbines with two or more rotors atop a single support structure has inspired inventors since the 1920s. Current renewed interest in multi-rotor technology has a strong focus within large-scale offshore. Innovative product announcements and developments up until 2017 cover especially horizontal-axis turbines for bottom-fixed foundations as well as floating wind foundations, but no scaled and/or full scale prototypes yet.