EAE – Exeter Agri-Energy

EAE worked closely with two partners to bring this anaerobic digestion system online:


   
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How It Works

EAE uses a proprietary combination of state of the art technology to achieve energy efficiencies unmatched by any other anaerobic digestion system in the Northeast. However, the core concept is as ancient and reliable as the basic laws of science.

Stonyvale Farm collects manure from 1,000 milking cows, and processors deliver organic waste to augment and optimize a recipe that serves as the fuel. The careful introduction of organic waste into the digesters, in just the right amount and at just the right time, is part of the unique “edge” that EAE has developed at Stonyvale Farm.

The system heats the manure/organic mixture to just over 100 degrees Fahrenheit, and agitates it intermittently over a 15-25 day retention period. At this point the concoction produces an energy-packed supply of biogas, a potent combination of methane and carbon dioxide. A 1,500 horsepower engine burns the biogas, powering a generator that produces enough heat every day to replace 700 gallons of heating oil on average, and 22,000 kilowatt hours of electricity. On an annual basis, that’s enough energy to heat 300 New England homes and enough to power as many as 800 households.

Click below to view a visual representation of how this works.


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