US battery energy storage prices spiking
The “ Energy Storage Pricing Insights ” report published by solar and energy storage pricing platform Anza Renewables for the second quarter has highlighted the sharpest
Base year costs for utility-scale battery energy storage systems (BESSs) are based on a bottom-up cost model using the data and methodology for utility-scale BESS in (Ramasamy et al., 2023). The bottom-up BESS model accounts for major components, including the LIB pack, the inverter, and the balance of system (BOS) needed for the installation.
Core equipment – mainly the BESS enclosures, the Power Conversion System (PCS) and the Energy Management System (EMS) – costs around $75/kWh when delivered from China, for countries with low import duties. This cost is per unit of usable battery capacity.
Across global markets outside China and the United States, the total capex to build a long-duration (4 hours or more) utility-scale BESS project is around $125/kWh, of which around $75/kWh is for the core equipment shipped from China and around $50/kWh to install and connect the battery. A levelised cost of storage (LCOS) of $65/MWh.
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. 1. All-in BESS projects now cost just $125/kWh as of October 2025 2.
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