Case Study
Gallo Farms / Cottonwood Dairy — Atwater, CA
Anaerobic digester cover for Gallo Farms' 5,500-cow Cottonwood Dairy in Atwater, California, with captured methane powering steam and electricity.
300,000 sq ft
Cover Size
250ft x 1,200ft
Lagoon Dimensions
60 mil HDPE
Material
Client
Gallo Farms / Cottonwood Dairy
Location
Atwater, CA
Completed
2004
Industry
Dairy / Food Processing
System Type
Covered Lagoon Anaerobic Digester
The Challenge
Problem
EFI installed a massive anaerobic digester cover for this 5,500-cow dairy and cheese processing plant that handles 1,000,000 lbs of milk daily.
Our Approach
Solution
The system generates $2,000/day in savings with a four-year payback, using captured methane for both steam and electricity generation.
Floating CoverBiogas SystemAnaerobic Digester
Outcomes
Results & Metrics
300,000 sq ft
Cover Size
250ft x 1,200ft
Lagoon Dimensions
60 mil HDPE
Material
5,500 cows
Herd Size
$2,000/day
Cost Savings
4 years
Payback
Key Outcomes
- Biogas captured and managed
- On-site power generation achieved
- Cover Size: 300,000 sq ft
- Lagoon Dimensions: 250ft x 1,200ft
- Material: 60 mil HDPE
- Herd Size: 5,500 cows
- Cost Savings: $2,000/day
- Payback: 4 years
Related Work
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CO2e Avoided
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Lagoon Coverage
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CO2e Destroyed
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Destruction Efficiency
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