Productive and Efficient
Willow is a productive and energy-efficient field energy plant. It can be utilised as energy source in all the same energy plants where other biofuels, wood chips for example, can be used.
The average rate of growth of willow is 1,5 metres a year. Felling takes place in every 3–4 years. Willow is felled during winter time, when growth has stopped and leaves have fallen off. New sprouts grow from the stumps, so no new willows need to be planted.
A well-kept willow field continues growing for at least 25 years. When cultivation some day is ended, stumps can be crushed with the usual farmer’s tools and the field can be taken into new use.
Energy willow in a nutshell
- Rate of growth approx. 1,5 metres yearly
- yield in every 3–4 years
- grows at least 25 years if kept well
In Denmark, willow cultivation has been taken as a serious alternative in the country’s bioenergy production, because such a small area in Denmark is woodland. Denmark has reserved 50 000 hectares for the cultivation of willow and poplar in the coming years.
In Finland instead, there is so much tree stand that a part of it rots in the woods. Before these rotting trees are utilised, cultivating willow is not a sensible option.
More information (in Finnish) here: