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Danone is partnering with PurposeEnergy on a $40 million anaerobic digestion facility in Minster, Ohio, to process wastewater and organic residuals from Danone’s largest U.S. yogurt plant. The biogas is intended for a dedicated boiler at the factory; PurposeEnergy estimates the project could displace about 3,200 tons of carbon dioxide equivalent annually when fully operational.
Danone is partnering with PurposeEnergy on a $40 million facility in Minster, Ohio, that will process wastewater and organic residuals from Danone’s largest U.S. yogurt manufacturing plant into renewable biogas, treated water and soil amendments. PurposeEnergy commissioned the anaerobic digestion project, which is expected to open next spring and supply biogas to a dedicated boiler at the Danone factory.
PurposeEnergy says the plant will be capable of processing up to 250,000 gallons per day of wastewater and residuals. Anaerobic digestion breaks down organic material without oxygen, producing biogas and leaving other outputs that can be treated or used as nutrient-rich soil amendments. The company says the facility will also treat water before it reaches municipal wastewater systems.
The biogas will be piped to a dedicated boiler at Danone’s Minster yogurt plant, where it is intended to offset conventional natural gas. PurposeEnergy estimates the project could displace approximately 3,200 tons of carbon dioxide equivalent annually once operating. It also estimates that piping residuals directly from the factory, instead of using the previous off-site handling route, will avoid 720 tons of carbon dioxide equivalent each year.
Those figures are company estimates, not reported measured results from an operating facility. The project is being developed as Danone increases production at Minster to meet demand for high-protein yogurt, according to Food Dive’s October 21 report. The report describes the facility as commissioned by PurposeEnergy; it does not provide a detailed breakdown of the partners’ financial contributions or construction schedule.
Biogas for Danone’s Minster Plant
The project links an industrial byproduct to energy use at the same manufacturing site. If the system performs as PurposeEnergy projects, some of the factory’s natural-gas use could be replaced with biogas made from its wastewater and organic residuals. Directly routing residuals to the facility could also reduce the emissions associated with the previous off-site handling route, according to the company’s estimate.
The facility may also affect local wastewater infrastructure. PurposeEnergy says removing surplus nutrients from the wastewater before it reaches municipal treatment plants will reduce strain on that system. The available report does not quantify the expected reduction in wastewater load, so the local infrastructure benefit cannot yet be measured from the published figures.
For Danone, the project fits a stated company goal to use renewable sources, including solar and biogas, for half of its energy needs by 2030. The facility is one project within that broader target; the source report does not say what share of Danone’s total energy it is expected to supply.
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Minster Expansion and Energy Plans
Danone’s Minster facility is its largest U.S. yogurt manufacturing plant, according to Food Dive. The company is spending millions of dollars to expand production there as demand for high-protein yogurt grows. The new waste-processing facility is being developed alongside that production growth, though the report does not specify how the project’s capacity relates to the factory expansion.
Anaerobic digestion is already used in several sectors to turn organic waste into biogas. The American Biogas Council estimates that nearly half of U.S. biogas capture systems operate at wastewater plants, followed by systems at farms and landfills. Biogas has also drawn debate in agriculture, particularly around digesters used to process livestock manure. The Minster project is described as processing dairy manufacturing wastewater and food residuals, rather than farm manure.
“What makes this project especially meaningful is how it brings together industry, local infrastructure, and community stakeholders around a shared goal.”
— Heiko Gerling, chief operating officer of Danone Americas
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Performance and Project Costs
The report does not identify the exact spring opening date, the facility’s construction progress, or whether all permits and commissioning steps are complete. It also does not disclose how the $40 million cost is divided between Danone and PurposeEnergy, or the partners’ operating and ownership arrangements.
PurposeEnergy’s emissions figures are estimates. The source does not describe the assumptions behind them, how actual reductions will be measured, or whether the plant will consistently run at its stated capacity of up to 250,000 gallons per day. The share of Danone’s Minster energy demand that biogas could cover is also not provided.
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Opening and Operating Results
The next stated milestone is the facility’s planned opening in spring 2027. After it begins operating, the practical measures to watch include how much wastewater and residual material it processes, how much biogas reaches Danone’s boiler, and whether the estimated emissions reductions are achieved. The source report does not give a date for public operating data or specify a reporting schedule.
Danone’s broader renewable-energy target is for renewables such as solar and biogas to meet half its energy needs by 2030. Further details on how this project contributes to that goal—and on the facility’s verified performance—have not been reported.
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Key Questions
What will the Minster facility process?
PurposeEnergy says it will process wastewater and organic food residuals from Danone’s Minster yogurt plant, with capacity for up to 250,000 gallons per day.
How will the facility use the waste?
The anaerobic digestion plant will produce biogas, treated water and nutrient-rich soil amendments. The biogas is intended for a dedicated boiler at Danone’s factory, where it will offset conventional natural gas.
How much emissions reduction is expected?
PurposeEnergy estimates the facility could displace about 3,200 tons of carbon dioxide equivalent per year when operating. It separately estimates 720 tons of annual avoided emissions compared with the previous off-site handling route. These are projections, not reported operating results.
When is the facility expected to open?
The report says the facility is set to open in spring 2027. It does not provide a specific date.
How much of Danone’s energy will the project provide?
The source does not state what proportion of the Minster plant’s energy will come from the biogas. Danone’s broader goal is to use renewables such as solar and biogas for half of its energy needs by 2030.
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