In 2025, the global average price of a turnkey battery energy storage system (BESS) is US$117/kWh, according to the Energy Storage Systems Cost Survey 2025 from BloombergNEF (BNEF), published last week (10 December). That was a 31% decline from 2024 numbers. . With tariffs on Chinese imports the culprit, solar and energy storage pricing platform Anza Renewables expects cost volatility to continue until there is certainty over US tariff policy. Global turnkey battery storage system prices fell dramatically through 2024, with BloombergNEF finding a 40% year‑on‑year drop to. . Ember provides the latest capex and Levelised Cost of Storage (LCOS) for large, long-duration utility-scale Battery Energy Storage Systems (BESS) across global markets outside China and the US, based on recent auction results and expert interviews.
