What will it take to get electricity to the world's poor?

What's the most promising way to extend electricity to those who now lack it? Is it top-down, extending the centralized grid and building large power plants? Or is it bottom-up, with distributed energy?

By David Robertshttp://grist.org/climate-energy/how-can-we-get-power-to-the-worlds-poor-fastest/?utm_source=newsletter&utm_medium=email&utm_term=Daily%2520Oct%252029&utm_campaign=daily