Bos Dairy


Founded in 2003 and located in Fair Oaks, Indiana, Bos Dairy is estimated to generate $4.3 million in annual revenues. The farm houses 3600 cows and employs a staff of approximately 35.

Digester at Bos Dairy

Digester at Bos Dairy (credit:


In 2004, with its tendency towards environmental stewardship, Bos Dairy decided to implement a mixed plug-flow anaerobic digester onsite, in order to reduce the farm’s odor, produce its own high-quality cow bedding, improve its nutrient management practices, and generate renewable electricity from manure. The farm felt that building a digester would lessen the dairy’s impact on the environment and also promote positive relations with their neighbors and community. Due to the farm’s proximity to the interstate, odor reduction was a major driver for the project. The digester was the second of its kind to be built in Fair Oaks, Indiana, and includes 2×350 kW engine gen-sets.


IFES Number: 206

City: Fair Oaks

State: IN

Country: USA

Type of Firm: Farm

Main Products: Dairy

Size of Firm: 3600 cows

Ownership Type: private

Technology: Biogas

Operational Status: Operational

Year Installed: 2004

Energy Feedstock: Cow manure

Energy Uses: Electricity

New co-products: bedding

TCO2 Eq Avoided: 24,086 metric tons CO2E/yr