Wagner Farms milks approximately 400 cows and grows 1,000 acres of crops in Poestenkill, Rensselaer County, NY. Their primary anaerobic digester system was originally commissioned in 2010 and is one of the smallest among those on New York State dairy farms. It has served Wagner Farms as an important source of economic diversification and allows them to accept off-farm food wastes from the region to co-digest with their manure to produce electricity. They value the digester’s contributions to environmental stewardship in the local community. This case study highlights the anaerobic digester to energy system refurbishment and expansion that Wagner Farms began implementing in 2019. A case study of their original system was written in 2014 and can be found under the Cornell eCommons listing https://hdl.handle.net/1813/65732.