Israel’s Nova Lumos has devised a pay-as-you-go mobile-based solar energy program for developing countries that produces clean electricity for less than it costs to purchase kerosene. Nova Lumos just won The Pitch contest for new start-ups at the “Globes”-Ernst & Young Journey Conference in Tel Aviv.
http://www.globes.co.il/serveen/globes/docview.asp?did=1000886803&fid=1725
http://www.greenprophet.com/2013/09/nova-lumos-solar-electricity-in-a-box-is-cheaper-than-kerosene/