As the renewable natural gas (RNG) market evolves, there’s been an uptick in two project types: one is RNG produced from dairy farm manure; another is RNG from manure that’s co-digested with food waste. RNG project developer and ABC member Vanguard Renewables is investing in both market options, with six anaerobic digester (AD) projects under construction at farms in Colorado, Georgia, and Nevada, to make either electricity, heat, or transportation fuel. And it’s growing its network to pump up its feedstock supply while helping farmers cut greenhouse gas emissions. More >>