Oregon’s largest dairy will test a new generation of technology that captures methane from cow manure — tapping an underused energy source and lowering greenhouse gas emissions.
The $1 million methane digester is being constructed to show that even small farms could save the expense of trucking heavy manure to a central facility. Instead, they could have their own digesters and pipe excess gas to a collection spot.
(Illinois dairy farm, photo by David Nolan)