Global battery demand is set to triple by 2030, with grid storage emerging as the fastest-growing use case ahead of electric vehicles. Multiple technologies, from solid-state to lithium metal and sodium-ion, are advancing rapidly, but translating laboratory progress into industrial-scale production remains the bottleneck. Can battery production scale fast enough to meet tripling demand, or will a storage bottleneck become the energy transition’s defining constraint?
This was the question posed in a session on batteries moderated by The Innovator’s editor-in-chief at the World Economic Forum’s Annual Meeting of the New Champions in Dalian, China, in June.
The answer is crucial because batteries have become the linchpin of the energy transition — not a supporting technology, but the mechanism that makes the whole system work. Solar and wind are cheap and abundant, but they are also intermittent, generating power when the sun shines or the wind blows rather than when people need it. Batteries solve that mismatch by storing surplus renewable generation and releasing it on demand, and they’re doing so on an increasingly enormous scale: global energy storage capacity must increase sixfold, to 1,500 GW by 2030, to accommodate the build-out of new solar and wind that governments have pledged, and batteries alone account for 90% of that storage increase, growing 14-fold to 1,200 GW. Utility-scale battery storage additions already hit a record 63 GW in 2024, bringing total installed capacity to 124 GW, and costs have fallen roughly 40% in a single year to around $150 per kWh — a decline that is turning batteries from a niche grid asset into standard infrastructure, according to the International Energy Agency.
What’s changed most is the role batteries play, not just their volume. Battery storage is increasingly acting as a “multi-tool” for power systems — balancing supply and demand in real time, easing grid congestion, and increasingly shifting large volumes of renewable energy from when it’s generated to when it’s needed, rather than just providing short bursts of backup power. That flexibility is becoming just as critical for managing the surge of new, spiky electricity demand from EVs, heat pumps and data centers as it is for integrating renewables, says the IEA.
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