Biomass power plants in Europe are operated primarily with wood. Unfortunately in many countries worldwide the availability of this fuel is limited. Meanwhile shortage tends to result in increasing delivery costs and economic challenges for the operating companies. So the demand for possibilities of using alternative biomasses is high; but also the inhibition threshold due to well-known difficulties with slagging, corrosion and emissions. A process orientated validation of new biogenic fuels in different thermal processes has to reveal prospects and risks of introducing them in the market. Thereby not only procedural points of view are considered but additionally the feasibilities to recycle nutrients to achieve a significant contribution to resource efficiency.