Constantine, Michigan
America’s only permeate fuel ethanol plant
DD Biofuel Constantine is a joint venture with the Michigan Milk Producers Association, a co-operative founded in 1916, serving dairy farmers in Michigan, Indiana, Ohio and Wisconsin. The Constantine dairy plant processes over 2 million pounds of milk a day and produces 16,000 metric tonnes of permeate solids a year.
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Location |
455 East Water Street, Constantine, Michigan, 49042, USA |
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Product |
Denatured ethanol |
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Specifications |
ASTM D4806, EN 15376 |
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Volume |
2,300,000 gallons per year |
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Feedstock |
Dairy processing waste (liquid dairy permeate) |
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Feedstock source |
Michigan Milk Producer Association dairy plant 125 Depot St, Constantine, Michigan |
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Certifications |
Renewable Fuel Standard D5 RIN (separated food waste), ISCC EU (application pending) |
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Carbon intensity |
16.8 g/MJ (GREET 2024), 13.2 g/MJ (ISCC) |
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Plant Manager |
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QA Manager |
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Sales |



