A Dairy Cooperative Turns Waste into a Second Income

Dairy farming concentrates two things: milk and manure. The first built Arusha's cooperative economy. The second, until recently, built nothing but flies and methane.

From disposal problem to supply contract

Under a feedstock agreement with Tanzania Kwanza, forty member farmers of the cooperative deliver manure to a shared collection point on a weekly schedule. Each delivery is weighed, logged, and paid: roughly 2.5 tonnes per day across the membership.

The waste travels to the digester; the value travels back twice. Once as payment per tonne, and again as discounted biofertilizer allocated in proportion to each farmer's deliveries.

The ledger effect

For the cooperative's members, the new revenue line raised average incomes by around 35%, without a single additional cow. The cooperative used its collective margin to cover veterinary services that members previously deferred.

Just as important is what stopped happening: manure no longer accumulates beside milking sheds, water runoff is cleaner, and the cooperative's compliance position with environmental officers has never been stronger.

The model

This is the template Tanzania Kwanza intends to repeat around every plant it builds: organised farmer groups as paid suppliers and first-priority fertilizer customers: owners of the loop, not bystanders to it.