Off-Grid 50-Ton Potato Store in Kenya Cuts Losses Using Passive Cooling and Natural Ventilation

In a major step toward sustainable post-harvest infrastructure, a new 50‑tonne potato storage facility has been commissioned in Kenya that operates entirely without electricity. The structure relies on highly insulated panels to shield the interior from scorching daytime temperatures, while a carefully designed natural ventilation system takes advantage of cooler night air—operators simply open the doors after sunset to flush out heat and lower the internal temperature. This low-tech, high-impact approach keeps the storage environment stable enough to preserve potato quality for several months beyond the typical shelf life, directly addressing one of the most critical bottlenecks in smallholder farming regions where reliable power is scarce.

The facility’s success has profound implications for food security and rural economies. By drastically reducing post-harvest losses—which can exceed 40 % in some areas—the storage unit enables farmers to sell their produce when market prices are more favorable, rather than being forced into distressed sales immediately after harvest. Moreover, the design is cost-effective, easy to replicate, and uses locally available materials, making it a viable model for wider adoption across East Africa and other developing regions. Early field trials show that potatoes stored in this manner exhibit lower sprouting, reduced shriveling, and better overall marketability, offering a practical, climate-smart solution that empowers local communities without relying on expensive or imported technologies.