Energy crops, like fast growing willow, poplar, miscanthus, hemp or cane are considered as energy sources for the longer term. At this moment the costprice is still too high. With optimization and further development, this costprice will go down. Next to the negative aspect of the price, the most important positive aspects are: the direct control on quality and the high security of supply. These aspects mainly come from the fact that the crops as a main product are produced for energy.