The West African nation of Sierra Leone has one of the lowest electrification rates on the planet. When night falls, most of the country turns to battery-powered flashlights or kerosene lamps
Amid these challenging conditions, social entrepreneurs at Columbia University see opportunity. A team of students is developing plans to bring low-cost, solar-powered energy to Sierra Leone. Through their startup, Azimuth, they hope to offer solar-powered lamps, payable in installments on a mobile phone, to millions of people with no access to credit or a conventional grid.
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