LAB University of Applied Sciences, together with LUT University, the City of Lappeenranta and several companies in the South Karelia region, has started the implementation of the regional “Biofine” RDI ecosystem. The aim is to establish the internationally acknowledged bioeconomy and technology competence center in the South Karelia region, which supports the development of an “innovation and experimental environment” in accordance with the “South Karelia Regional Programme”, as well as business and innovation activities based on the bioeconomy. The “LAB Green Solvents Experimental Environment” investment to be sought will support and promote the goals and opportunities set out in the circular economy Green Deal for the region and businesses. The LAB Green Solvents Experimental Environment promotes the development of sustainable, low-emission biomass separation technology. Green solvents are establishing a foothold as a major technology for the utilisation of biomaterials of the future. Already, the most advanced bioeconomy actors in both research and industrial sectors are exploring the possibilities offered by the DES (DES, Deep Eutectic Solvents) method. The solvent-based technology operates at lower temperatures than currently used technologies, saving process energy and reducing CO2 emissions. Green solvents also improve the recovery and further processing possibilities of biomass values (lignin, cellulose, hemicellulose) and expand both the raw material and the end product base. The experimental environment for green solvents promotes the research, product development and innovation potential of the LAB “Biofine” entity and strengthens cooperation, especially with research and product development organizations, at both national and international level. In light of the current sustainability and bio investments, there will be an accelerating demand from the business sector for a pilot-size testing environment. Regionally, the investment will strengthen the cooperation between LAB and LUT universities, scalable research and product development infrastructure and ultimately help to produce the latest technology experts for the needs of companies. Investments in a green solvent experimental environment will bring the latest innovations, research and networks in biomass processing to companies and help them transition to more sustainable production methods and products.The investment consists of a reactor for the green solvents, especially deep eutectic solvents (DES), of the experimental plant, the associated equipment, the common heating and cooling equipment, and the heating and cooling equipment that requires the reactor to operate. The investment is the responsibility of LAB University of Applied Sciences, but the whole will be planned in close cooperation with experts from LUT University, among others.