# Global battery energy storage expansion

> Live situation record from CLSTR: https://clstr.news/situations/global-battery-energy-storage-expansion
> Updated: 2026-09-21T04:35:55.000Z. Sources: 23. Developments: 2.

The deployment of large-scale battery energy storage systems (BESS) is expanding globally to support renewable energy integration and grid stability.

In Europe, Swedish firms Tavion and Rebaba have secured funding to expand operations, with Tavion utilizing €50 million for battery parks in Poland and Rebaba scaling second-life systems in Sweden and Denmark. RWE has reached a final investment decision for a 400 MW/1.1 GWh battery in the Netherlands, specifically designed to alleviate grid congestion in the Noord-Brabant region. In Belgium, Giga Storage has commenced construction on the 2.8 GWh Green Turtle project. Germany continues to see large-scale developments, such as the Trianel-Batteriepark Waltrop, a 900 MW/1,800 MWh project involving WSW Energie & Wasser AG.

Global developments include AGL Energy achieving full commercial operation of a 500 MW battery in Australia. In India, GK Energy secured a 150 MW contract in Maharashtra, though NTPC Ltd terminated a 400 MWh project due to contractor default.

In the United States, Heron Power and RWE Americas are piloting solid-state transformer technology in Texas. Additionally, Energy Vault has acquired a 2.3 GW battery storage portfolio from Goshe Energy Storage, comprising 15 projects. Relatedly, 2G Energy AG has secured a 275 MW order from Energy Vault to provide power generation solutions for AI data centers.

## Claims

- WSW Energie & Wasser AG is participating in the Trianel-Batteriepark Waltrop via T-BESS 1 GmbH & Co. KG. (single source)
- The Trianel-Batteriepark Waltrop has a total capacity of 900 MW and up to 1,800 MWh. (single source)
- RWE has reached a final investment decision on a 400 MW/1.1 GWh battery energy storage system in the Netherlands. (single source)
- The RWE battery project in Moerdijk is intended to relieve grid congestion in the Noord-Brabant region. (single source)
- Giga Storage has begun construction on the 2.8 GWh Green Turtle project in Belgium. (single source)
- Energy Vault acquired a 2.3 GW battery storage portfolio in the United States from Goshe Energy Storage. (single source)
- 2G Energy AG received a 275 MW order from Energy Vault Holding Inc. for AI data center infrastructure in the U.S. (single source)

## Timeline

### 2026-09-21: Energy companies expand global battery storage projects

Major energy firms are scaling up battery storage projects globally, including RWE's new Dutch BESS, Energy Vault's 2.3 GW US acquisition, and large-scale developments in Germany and Belgium.

22 sources. https://clstr.news/cluster/ntpc-terminates-gr-infraprojects-contract-for-maharashtra-battery-storage-project

### 2026-09-10: Swedish energy firms secure funding for European battery storage expansion

Swedish firms Tavion and Rebaba have secured new funding to expand battery energy storage projects and second-life battery repurposing across Europe.

3 sources. https://clstr.news/cluster/swedish-energy-firms-secure-funding-for-european-battery-storage-expansion

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Cite as: Global battery energy storage expansion. CLSTR, https://clstr.news/situations/global-battery-energy-storage-expansion