A Minnesota clean-water plant is taking energy production to the next level — molecular.For years St. Cloud’s Nutrient, Energy and Water Recovery Facility has generated power with solar arrays (525 kW installed and another 1 MW under construction) and a biogas-fueled combined heat and power system (two 633 kW Jenbacher engines).Now the city is installing an electrolysis system to separate water into its components: hydrogen to be used in a variety of ways, and oxygen to be used in the existing aeration treatment process. Heat from the electrolysis process will also be captured and reused. Power for the electrolysis will
