Wire · market
Global battery storage capacity projected to surge sixfold by 2030
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Fusion42 · 28 July 2026 · Fusion42 review
Global battery storage capacity is projected to expand sixfold between 2025 and 2030 at a 42% CAGR, driven by utility procurement, grid constraints, and power demand from AI data centres. The U.S. and China account for 74.6% of installed capacity, with project designs standardising around four-hour duration systems and co-located solar-plus-storage hybrids.
This Wire brief sits within Fusion42's coverage of Energy Storage and Clean Energy, and 5 sources have reported it between 27 Jul 2026 and 29 Jul 2026.
◆ ◆ The Wire takeaway
Four-hour battery systems are now the grid standard, not a niche product—and data centres are buying them not for backup but to dodge interconnection caps and peak charges. If you make inverters, balance-of-system components, or grid-tie software, the addressable market just expanded six times over, with a clear duration spec that kills older two-hour architectures.
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5 sources · first reported 27 Jul 2026 · latest 29 Jul 2026
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