Danone’s Ohio Yogurt Plant to Use Biogas From $40 Million Waste Treatment Project
PurposeEnergy has commissioned a facility costing more than $40 million in Minster, Ohio, to convert food manufacturing wastewater and organic residuals into renewable energy. The project serves Danone’s largest U.S. yogurt plant and other regional food and beverage producers, connecting industrial waste treatment with fuel supply. According to PurposeEnergy’s October 19 announcement, the facility is operating and ramping up, with a ceremonial opening planned for spring 2027.
The installation is designed to process up to 250,000 gallons of material per day and produce approximately 50,000 million British thermal units, or MMBtu, of biogas annually at full operation. PurposeEnergy identifies thermal energy as the project’s output, with the recovered fuel supporting manufacturing operations at Danone’s neighboring site.
Biogas will travel to a dedicated boiler at the yogurt factory, replacing a portion of its conventional natural gas consumption. PurposeEnergy estimates that this substitution could displace approximately 3,200 U.S. tons of carbon dioxide equivalent annually. Separately, piping residuals directly from Danone’s factory is expected to avoid around 720 U.S. tons of emissions each year compared with the previous off-site handling route. These figures are company estimates.
The project illustrates how food manufacturers can connect two operational needs: managing production byproducts and supplying energy. PurposeEnergy describes the Minster system as infrastructure that can accommodate increased yogurt output while recovering energy from the resulting residuals. Danone is the anchor customer, giving the project a nearby manufacturing operation with ongoing waste treatment and thermal energy requirements.
That connection is relevant as Danone expands the factory. In August 2025, the company announced a multimillion-dollar investment covering approximately 48,000 square feet of additional space, a new production line and upgrades to existing lines. The expansion was expected to create 30 full-time jobs. The site produces brands including Oikos, Activia, Dannon and Danimals.
Danone linked the investment to rising demand for yogurt, particularly products offering protein and probiotic benefits. It also said the factory would purchase 60% more milk over the following couple of years, drawing on existing suppliers and additional local farms. Those plans underline the importance of assessing environmental performance alongside production growth: increased capacity changes both resource requirements and the volume of materials that supporting infrastructure must handle.
Anaerobic digestion uses microorganisms to break down organic materials without oxygen. The U.S. Environmental Protection Agency explains that the process produces biogas, consisting mainly of methane and carbon dioxide, alongside a nutrient-rich material called digestate. Depending on treatment and intended use, biogas can fuel boilers, generate electricity, or be upgraded for other applications. Digestate can be processed for uses including fertilizer and soil amendments.
In Minster, the facility also treats water before it enters the municipal wastewater system and produces nutrient-rich soil amendments. PurposeEnergy says the treatment removes surplus nutrients and dissolved solids, reducing the burden on village infrastructure. The arrangement therefore has implications for local wastewater capacity as well as the factory’s fuel consumption.
For manufacturers considering similar investments, this combination suggests that waste treatment and energy planning should be assessed together. A digestion project’s operational value depends on the material available for processing, the reliability of the treatment system, and the ability to use the recovered energy. At Minster, the nearby yogurt factory provides both the principal source of residuals and a destination for the resulting fuel.
The initiative also fits within Danone’s Re-Fuel energy program. When announcing the program, the company set ambitions to supply all its electricity and half its total energy from renewable sources by 2030. Its approach includes energy efficiency, engineering improvements, and partnerships with local renewable energy providers. The Minster project applies that partnership model to manufacturing heat.
Measuring the climate outcome requires attention beyond the amount of natural gas replaced. The United Nations Framework Convention on Climate Change’s methodology for anaerobic digesters identifies electricity and fossil fuel consumption, methane escaping from equipment, and emissions from flaring as relevant project emissions. It also accounts for emissions associated with certain digestate storage and composting practices.
These factors mean projected fuel substitution should be distinguished from a complete assessment of net greenhouse gas savings. For operators and sustainability teams, useful performance evidence would include actual biogas production, fossil gas displaced, energy consumed by treatment equipment and methane losses. Comparing those results with the previous waste handling arrangements would help establish the project’s overall contribution.
As the facility increases throughput, its practical significance will rest on sustained operating results. The Minster model shows how an expanding food factory can integrate residuals management with renewable heat supply. Its wider relevance will depend on whether comparable sites can match available feedstocks, treatment needs, and energy demand while demonstrating measurable environmental improvements.
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