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off-grid solar

Energy storage: A critical piece of the power puzzle

Peter Mockel's picture
 Aarthi Sivaraman


Just months after a historic climate conference in Paris, I can’t help but marvel at how far the world has progressed in the uptake of renewable energy. Take solar power, for example. What used to be a prohibitively expensive endeavor just years ago, is now a household-level solution in many countries. Then there are the record-setting solar auctions in countries like Zambia, the United Arab Emirates, India, Mexico, and Peru.

So what’s the next critical piece of the puzzle in our global efforts to provide sustainable energy for all?

In my view – and that of many others – it is to establish a viable, stationary solution to store energy. While stationary energy storage on a large scale has always been around – hydro energy storage, as an example, is efficient and cost effective – it is tied to topography and difficult to add at will. The cost of batteries has also been a big obstacle to widespread deployment and was a primary reason for the electricity grid to be designed as the biggest real-time delivery systems humans have ever made.

Solar lights aimed at African market work overtime around Washington Beltway

Christopher Neal's picture

When I heard that Jim Yong Kim, the World Bank’s new president, was to meet staff in the energy department where I work on his first day at work July 2, it occurred to me that a good way to introduce him to our work in sustainable energy would be a quick demo of solar lanterns.

I suggested it to my colleague Katherine Steel, the manager of Lighting Africa, a joint Bank-IFC program that has created markets for off-grid solar lights in Africa.