The demand for balsa wood in the wind industry has risen sharply in recent years. High demand from China and the U.S. in particular have almost tripled the price in a period of 15 months until mid-2020. China is now trying to reduce its dependence on imports by growing its own timber.
Balsa is a very light, easy-to-machine type of wood with a very low density, which is why it is of great importance worldwide as a core material of fibre composites in sandwich construction, for example in boat, sail and small aircraft construction. And it is also suitable for some types of wind turbine rotor blades.
While China now builds the most wind turbines in the world and is expanding wind energy at a rapid pace, suppliers are having ...