Uusimaa area is so densely populated that there are not enough recipients or room for all the horse manure generated there. Therefore, the purpose of this thesis was to explore the possible demand for wider research and project to clarify the bioeconomy potential, placing and further use of horse manure in the research area Central Uusimaa. The commissioner of the thesis was the Central Uusimaa Rural Administration Services and its operational area. The methods of the thesis were both qualitative and quantitative. The theoretical knowledge included bioeconomy, horse economy and its legislation but also manure maintenance and responsibility issues. Eight experts were interviewed by email to find out the possible new research data. In addition, the impact of current geopolitical situation on utilizing horse manure was analysed. A semi-structured online survey was used to determine the attitude of the stablekeepers towards manure cooperation, the amount of manure generated in the research area, the location and the bedding used. The research group had 82 stables, of which 54 stables were interested in manure cooperation. 36 stables were not doing cooperation for the time being. The stables had a total of 582 horses and 133 ponies, producing more than 11 000 mᶾ of manure each year, of which more than 90 % to be willingly donated outside the stable. The most used beddings were peat and different wood-based materials. The stables were mostly small, and they were located all over the research area. In conclusion, increasing the utilization of the horse manure is in line with the Finnish Bioeconomy Strategy. Horse manure is an excellent soil renovator and a safe fertilizer. It can be used e.g., in energy production but still more research and productization are needed. A larger project could be launched to explore manure clusters and existing reusable structures, the potential for closed nutrient cycles and energy production, the responsibility strategy of manure management and logistics. Finally, solutions and operating models require strong cooperation, advice and coordination assistance.