Act4energy participated at the 11th acceleration cycle of OK!Thess. Ok!Thess is a leading startup in Thessaloniki and a catalyst for the development of the local innovation ecosystem. It aims to bring innovative ideas to the market through an acceleration program that includes training, mentoring, and access to capital. Our project aimed to evaluate the potential for market penetration of an open-design anaerobic digestion facility for small and medium agro-industrial enterprises.