Many of us don't realize that 75% of sub-Saharan Africa is without electricity. Coca-Cola (KO 0.55%) is doing its part to improve that statistic by bringing small solar-powered kits to kiosk owners in Kenya. In this video, Fool.com contributor Aimee Duffy explains Coke's initiative and extrapolates on the effect that it may have on our energy future and why investors should care.