Spans has experience in planning and design of biogas cogeneration facilities and standby power facilities for the water and wastewater industry. We have designed various anaerobic sludge digestion technologies along with facilities for maximizing use of biogas. We have experience of working with energy recovery technologies ranging from internal combustion engines, turbines (including micro-turbines) to emerging technologies such as fuel cells. We understand the numerous factors impacting the study, design, and operation of reliable and cost-effective energy recovery systems including biogas treatment and handling.