Bangladesh processes over 35 million tonnes of rice annually. Rice mills are heavy electricity consumers — husking, milling, polishing, and drying machines run for 12–16 hours per day. Rooftop solar can cut energy costs by 40% and reduce diesel dependency.
Bangladesh is the world's third-largest rice producer, with over 35 million tonnes processed annually. The country has approximately 15,000 rice mills — from small husking mills to large automated milling complexes. Rice mills are significant electricity consumers: husking machines, rubber roll shellers, whitening machines, polishers, elevators, and paddy dryers all run for 12–16 hours per day during the harvest season (April–May and November–December). Many mills in rural areas rely on diesel generators due to unreliable grid supply.
| Mill type | Daily consumption | Monthly cost (grid) | Monthly cost (diesel) | Solar plant size |
|---|---|---|---|---|
| Small husking mill | 200–500 kWh/day | BDT 60,000–1,50,000 | BDT 1,20,000–3,00,000 | 50–100 kWp |
| Medium automated mill | 1,000–2,000 kWh/day | BDT 3,00,000–6,00,000 | BDT 6,00,000–12,00,000 | 200–400 kWp |
| Large milling complex | 3,000–5,000 kWh/day | BDT 9,00,000–15,00,000 | BDT 18,00,000–30,00,000 | 600–1,000 kWp |
For rice mills in areas with unreliable grid supply, Vvon recommends a hybrid solar system with battery storage. During the day, solar panels power the milling operations directly. Excess solar charges the battery bank. When the grid fails or at night, the batteries and any remaining solar power keep critical machines running. This approach can reduce diesel consumption by 60–80%, with a payback of 3–4 years on the diesel savings alone.
Rice mills have a natural advantage for solar: the two main harvest seasons (Boro: April–May, Aman: November–December) coincide with Bangladesh's highest solar irradiance months. A well-designed solar system will generate maximum power exactly when the mill needs it most.
Vvon Technologies provides free solar feasibility studies for rice mills across Bangladesh — including roof survey, load analysis, diesel replacement calculation, and BPDB/REB application support. Learn more about solar for rice mills → or contact us for a free assessment →