Eldoret, Kenya

Completed

Community Circular Economy

We designed and launched a neighborhood-scale composting hub that diverts residential food waste from landfills, converting it into nutrient-dense compost for local urban farms.

Quick Project Facts

Attribute

Details

📍 Location

Charlotte, North Carolina (USA)

♻️ Waste Used

Cow dung

🔋 Biogas Capacity

4,500 lbs/month (Waste Diverted)

⚡ Energy Output

2,000 lbs/month (Soil Generated)

🏁 Completion

💰 ROI

Estimated 13 months

Implementation Process

Before installation, Green Pastures relied on diesel generators to run milking machines and chillers—costly, unreliable, and carbon-intensive. With rising fuel costs and local climate pressures, the farm needed a renewable solution to support its dairy operations.

Site Audit

Performed waste and energy assessment; estimated 4–5 tons of daily cow dung.

Site Audit

Performed waste and energy assessment; estimated 4–5 tons of daily cow dung.

System Design

Custom fixed-dome digester with gas storage, slurry outlet, and underground piping.

System Design

Custom fixed-dome digester with gas storage, slurry outlet, and underground piping.

Construction

Took 6 weeks with local masonry labor and prefabricated dome components.

Construction

Took 6 weeks with local masonry labor and prefabricated dome components.

Installation & Integration

Biogas piped directly to kitchen, milking parlor, and backup generator.

Installation & Integration

Biogas piped directly to kitchen, milking parlor, and backup generator.

Training & Handover

Staff trained on maintenance, gas flow control, and slurry reuse.

Training & Handover

Staff trained on maintenance, gas flow control, and slurry reuse.

Photo Gallery

Impact Area

🌱 CO₂ Reduced

~28 tons/year

🔌 Diesel Replaced

~500 liters/month

💸 Cost Savings

KES 130,000/month (~$950)

🧪 Byproduct

~1.5 tons/week organic fertilizer

👷 Jobs Created

6 temporary, 1 permanent technician

Challenges & Innovations

The high elevation of Eldoret meant cooler nights, which can slow digestion. We added thermal insulation and used slurry pre-warming to maintain optimal temperatures and microbial activity.

Conclusion

Biogas is more than a renewable energy solution—it’s a practical, cost-effective tool that empowers farmers to do more with what they already have.

From reducing fuel expenses to improving soil health and creating new revenue streams, the impact is clear. As more small farms adopt this technology, the agricultural landscape in Africa is being reshaped—cleaner, more resilient, and future-ready.

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