Renewable natural gas represents another phase in the development of biogas as a valuable fuel.

With accurate biogas measurements and gas blending for cogeneration, Sierra's SteelMass 640S and FlatTrak 780S have helped Santa Cruz Wastewater become a flagship renewable energy facility

It’s a $169 million upgrade for NEW Water in Green Bay, but the new solids handling facility is estimated to save millions each year. Here’s more on the technology and training being used.