The 450 kW digester at Rockwood Farm in Massachusetts co-digests processes food waste with the manure of 400 adult cows. At the time of photo, excess biogas partially filled the membrane cover.

After leading RCM’s sales effort in Europe and Asia, Jim Muir decided to approach the Northeast, USA.

Unlike Europe, many American farms are unfamiliar with the anaerobic digestion (biogas) process which can convert all types of farm wastes into electricity, heat, natural gas and high quality fertilizer. It does all this while eliminating methane and reducing global warming.

For his client, RCM Digesters, Jim Muir signed contracts with four farms in southern New England in early 2017 totaling¬† $16 million. The two launched in Connecticut became the state’s first modern agricultural digesters. The two operating in Massachusetts were among the first six digesters in that state.

As in Europe, this is the right technology at the right time. One key in southern New England is an abundance of food waste which farms are paid to co-digest with their manure. This results in more electricity and further reduction in global warming.

Update: In early 2017 RCM was absorbed and upper management replaced. However, Muir added Germany’s PlanET Biogas as a client. Today, Agricultural Digesters LLC has a special relationship with leading Austrian technology provider Biogest, but is independent and can recommend the best “fit” for your farm.


The Rockwood Farm in Granville, Massachusetts wanted a partner to obtain permits and food waste. We identified a new developer and made the introduction.

Early construction of digester base in foreground at Belden Farm in Hatfield, Massachusetts.