Over the past ten years, prices for solar panels and wind farms have reached an all-time low. However, the price for lithium-ion batteries, the leading energy storage technology, has remained too high. That's why researchers are exploring other alternatives, including flow batteries, thermal batteries and gravity-based systems.

CORRECTION (March 14, 2020): At 12:53 p.m., we incorrectly identified the size of the energy storage market. In total, the energy storage market is forecast to attract $620 billion in investments by 2040.

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The future of energy storage beyond lithium ion

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