Image: Rystad energy storage solution
By ESS news
Last year marked a historic turning point for BESS, when global operational storage capacity exceeded 250 GW, overtaking pumped hydro storage (PHES) for the first time, according to Rystad Energy.
Annual additions exceeded 100 GW/280 GWh in 2025 – nearly triple the volumes added in 2023 – reflecting a compound annual growth rate of more than 100% between 2020 and 2025. This rapid expansion makes BESS one of the fastest growing energy technologies of the decade, according to Rystad’s Energy Storage Outlook whitepaper.
Implementation momentum is expected to accelerate further in 2026, with global BESS additions expected to exceed 130 GW/350 GWh. Established markets such as China, the United States, the United Kingdom, Australia and Germany will continue to lead the way, while emerging markets – including Italy, Saudi Arabia and the wider Middle East, Chile and Eastern Europe – will grow in importance as policy frameworks, network needs and project pipelines align.
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