Today, an estimated 470 million small farmers in developing countries lose an average of 15% of their income to food spoilage. SolarFreeze uses solar-powered cold rooms to preserve perishable food in farms across Africa. Farmers can pay for cold-storage via MPESA, with as little as $0.1cents per day for a crate of fruits. Solar Freeze also provides mentorship and training, plus a mobile app that helps farmers reduce post-harvest losses.