There is a wide variety of digesters as well as applications of this technology. Each should be carefully designed around the feedstock and business objectives.  There is no one digester that will work for every application. A digester designed for a wastewater treatment plant is not the same digester that we would deploy in a dairy operation. ​For this reason, Renewable Energy Innovations seeks out the right technology partner that best fits the project's needs.

The U.S. is currently home to over 2,200 operational biogas-producing sites, according to the American Biogas Council, including:

• 171 on-farm digesters
• 1,500 digesters at wastewater treatment plants (only 250 of which use the produced biogas)
• 563 landfill-based energy projects (26 pipeline, 537 electricity)
• 11,000+ potential sites for new projects, prospects being eyed by both domestic and foreign developers.​

​​Cattle, poultry and swine manure, dinner scraps, wastewater treatment plant sludge, vegetable canning and potato processing waste, beer-making residuals, landfilled trash and the list goes on indefinitely. Materials that most people would seek to dispose of are becoming hot commodities in the developing U.S. biogas industry.  While seemingly infantile when compared to other countries’ mature methane-derived energy sectors such as Germany, recent years have seen a development boom inspired by a variety factors, including the U.S. renewable fuel standard.