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The cost of energy storage will be critical in determining how much renewable energy can contribute to the decarbonization of electricity. But how far must energy storage costs fall? In a study published August 7 in the journal Joule, MIT researchers answer this question.

Even with established energy efficiency measures put in place, along with a growing number of customer owned distributed, small-scale renewable energy projects such as residential and commercial solar rooftop systems, electricity demand continues to rise in certain global markets.

A low-cost, high-performance battery chemistry developed by University of Colorado Boulder researchers could one day lead to scalable grid-level storage for wind and solar energy that could help electrical utilities reduce their dependency on fossil fuels.