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The biogas goes directly to dual-fuel boilers. The Montpelier plant produces more biogas than it can use in summer. The excess is flared (lower right of the photo), but the staff is developing a project to use more of the gas.
Taking in food waste has enabled a Vermont clean-water plant to upgrade its biosolids dewatering equipment and produce enough biogas to nearly eliminate fuel oil for heating buildings and digesters. It also helps the host city toward its goal of net-zero energy.
The project at...
