In my humble opinion, a multifaceted approach needs to be adopted in tackling the problem of providing access to electricity to rural residents. How can the other 70% of the residents in rural Bangladesh have access to electricity so they can improve their lives as quickly as possible? The average American emits the same amount of greenhouse gas as 63 Bangladeshis! Unless we're willing to make sacrifices and live in the dark, I think the goal of electrifying communities as quickly as possible using a combination of renewables and clean fossil fuels may be the best solution. I predict a natural progression towards renewables as the technology matures and costs decrease.