The cost of wind power battery storage

London and New York, June 7, 2023 – The costs of wind power and battery energy storage projects have come down from levels seen in 2022, at the height of global supply chain constraints and the impacts of the Ukraine war.

With the falling costs of solar PV and wind power technologies, the focus is increasingly moving to the next stage of the energy transition and an energy systems approach, where energy storage can help integrate higher shares of solar and wind power.

CAPEX for Li-ion battery storage is also around 100 $/kWh (4-h), a more than 60 % reduction from 2023. These numbers are already lower than most projected costs for 2030. However, the case is different for offshore wind power.

This study shows that battery electricity storage systems offer enormous deployment and cost-reduction potential. By 2030, total installed costs could fall between 50% and 60% (and battery cell costs by even more), driven by optimisation of manufacturing facilities, combined with better combinations and reduced use of materials.

Small-scale lithium-ion residential battery systems in the German market suggest that between 2014 and 2020, battery energy storage systems (BESS) prices fell by 71%, to USD 776/kWh.

“Our results show that is true, and that all else equal, more solar and wind means greater storage value. That said, as wind and solar get cheaper over time, that can reduce the value storage derives from lowering renewable energy curtailment and avoiding wind and solar capacity investments.