The company's ‘Nabrajoint’ solution uses pre-loaded bolts to connect modules, meaning fewer inserts are needed in the blade.
Nabrawind expects to finish development, manufacturing and testing of the solution by Q4 2020, to be ready for commercial orders by 2021.
CEO Eneko Sanz explained that this solution could help make wind farms using turbines with blades more than 80 metres in length viable in more locations by making transportation easier.
The company expects turbine rotors to reach up to 200 metres by the end of the decade. Currently, the biggest onshore wind turbines have rotor diameters of around 150-170 metres.
Manufacturers claim newer models with increased blade lengths will boost annual electricity production.
But the increased dimensions make transportation difficult. OEMs and researchers have looked at different solutions to this challenge, including segmented blades, using airships to transport components, and on-site manufacturing.