Global Battery Storage Hit a Record in 2025 -- Trackers Split Between 40% and 61% Growth
Every major tracker agrees 2025 was a record year for global battery storage deployment, but the exact growth rate splits sharply depending on whether the tally counts power capacity (GW) or energy capacity (GWh). IEA, BloombergNEF, and Wood Mackenzie each report GW-based growth clustered around 40-48%, while InfoLink Consulting's GWh-based tally shows 61.3% growth -- a gap traceable to lengthening average storage duration and differing scope on pumped hydro.
claim: Global battery energy storage additions hit a record in 2025, but independent trackers report growth rates ranging from 40% to 61%
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- Unknown source host — defaulted to T? (lowest credibility)CredibilityScorer · balkangreenenergynews.com
- Unknown source host — defaulted to T? (lowest credibility)CredibilityScorer · ess-news.com
- insufficient_candidatesAlgox:topK · 5/6
Findings
- IEA's Global Energy Review 2026 recorded 108 GW of new battery storage capacity worldwide in 2025, a 40% increase over 2024 -- the fastest-growing power technology, now exceeding the historic annual buildout peak for gas-fired capacity (~107 GW in 2002).
- BloombergNEF counted 112 GW / 307 GWh added in 2025 (excluding pumped hydro), pegging growth at 48% year-on-year and marking the first year global additions topped 100 GW.
- Wood Mackenzie tallied 106 GW added in 2025, a 43% increase from 73 GW in 2024, with China supplying 54% of the global total and the US and Australia both posting >50% growth.
- InfoLink Consulting measured the year in energy terms rather than power terms: 275.3 GWh installed, a 61.3% jump from 2024 -- more than 20 percentage points above the GW-based growth rates reported by IEA, BNEF, and Wood Mackenzie.
- All four trackers agree 2025 was an unambiguous record year and that China supplied roughly half to two-thirds of global additions; they diverge on unit (GW vs GWh) and scope (pumped hydro in/out), not on the underlying trend.
- The GW/GWh gap itself is informative: energy capacity growing faster than power capacity signals the market is shifting toward longer-duration systems (4+ hour discharge) rather than just adding more sites.
Battery manufacturers, grid planners, and utility-scale storage investors sizing 2026 capex or supply contracts need to know whether "global storage growth" means power (GW) or energy (GWh) -- a single quoted growth-rate number hides which yardstick is being used.
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