Haverhill, Mass. Farm Powered Anaerobic Digester

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Crescent and Shaw Farms are taking huge steps to increase farm sustainability and enhance relationships with their communities. Construction will soon be underway on a new Vanguard Renewables Farm Powered Anaerobic Digester project at Crescent Farm in Haverhill, Mass. The project is a cooperative farm venture between Crescent Farm in Haverhill, Mass. where the digester will be hosted, and Shaw Farm in Dracut, Mass.

Crescent Farm will add 20 tons per day (TPD) of manure, which will be supplemented by 10 TPD from Shaw Farm. This manure will be combined with 100 TPD of pre-consumer organics from food processing and preparation operations. Methanogenic bacteria will break down the manure and organics to produce biogas (used to power a 1 MW engine) and digestate material (used as fertilizer).

The engine will produce more than 7,700 MWh per year of renewable energy, covering Crescent Farm’s needs and exporting the extra to the electrical grid. The fertilizer will replace the use of bone gel and chemical fertilizers. Using this digestate material will decrease phosphorous and nitrogen loading on both farms.