This is great stuff... Off-Grid Solar’s Killer App ((Kenya has the highest penetration of off-grid solar systems in Africa. Farmers in the region are gaining access to a number of solar-powered devices, including irrigation pumps, egg incubators, grain processors, and refrigerators. This year’s tomato harvest alone will nearly pay for the technology that’s underpinning Gicheru’s success: a solar-powered water pump. A model of simplicity, it consists of a 310-watt photovoltaic panel, a 440-watt-hour lithium-ion battery pack, and a controller that supports his 3,000-liter-per-hour direct-current pump as well as a few LED lights, a mobile phone charger, and a flat-screen TV.)) https://spectrum.ieee.org/energy/renewables/offgrid-solars-killer-app
