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.