Henrik - 1978: Stiesdal’s 1978 turbine was made with wooden blades and a control system, both of which he built from scratch. It was only retired in 1991 when the wood had rotted. Henrik: Henrik Stiesdal. Photo from Stiesdal A/S.
Vindeby. Photo courtesy Siemens Gamesa Renewable Energy
Stiesdal A/S’ TetraSpar was installed late last year and has so far had 59% capacity. Photos from Stiesdal A/S.
