This paper examines the sector economic consequences of protein extraction for non-ruminant feeding from grass, using green biorefinery conversion technology to increase domestic self-supply of protein. Impacts for conventional and organic farming are analysed in a partial equilibrium model of the Danish farm sector, which enables assessment of distributional effects between different farm types. The analysis suggests that crop production value and feed costs will increase, leading to a net economic loss in the conventional sector and a small gain for organic farming. Some variation across farm types in terms of adoption of biomass production and economic outcomes were found.