ENERGY STORAGE
IEA Battery Review: Scale Grows, but System Evaluation Still Matters
The IEA traces lithium-ion battery growth and falling cell prices while underscoring the importance of supply-chain scale.
A rapidly scaled industry
In a 7 September 2026 commentary, the IEA described a global lithium-ion battery market worth more than USD 150 billion. It reported that annual battery demand in 2025 was almost 1,000 times its 2000 level, while average cell prices had fallen by 97% over that period.
What storage buyers should compare
Our interpretation: a lower cell price is not the same as a lower installed storage-system price. Buyers still need to compare the proposed battery, power conversion, controls, thermal management, warranty terms and operating conditions as one system.
- Request model-specific technical and safety documentation.
- Define the intended duty cycle and site environment.
- Record responsibilities for commissioning and ongoing support.
The IEA figures describe a global market trend. They do not state Ecoreesun's battery pricing, manufacturing capacity or the performance of a particular project.
Source
IEA — The rise of lithium-ion batteries — 7 September 2026. Accessed 30 September 2026.
Industry news summary with Ecoreesun editorial interpretation. Source and article publication dates are distinct.