Neoen Unveils Large-Scale Battery Projects in France, Japan

Why It Matters

The projects deepen Neoen’s presence in two key renewable markets, enhancing grid stability and accelerating large‑scale battery adoption in Europe and Asia.

Key Takeaways

• 248 MW French battery will be country's largest storage asset
• First Neoen battery to connect to France's 400 kV grid
• Japan project marks Neoen's inaugural large‑scale storage installation there
• Partnerships with Nidec, Equans, and Toho provide long‑term service
• Neoen targets 10 GW battery capacity worldwide by 2030

Pulse Analysis

Large‑scale battery energy storage systems (BESS) are becoming a cornerstone of modern power grids, offering rapid response to frequency and voltage fluctuations while enabling higher penetration of intermittent renewables. Neoen’s dual announcements reflect a broader industry shift toward megawatt‑scale storage, driven by falling battery costs, tighter emissions targets, and the need for grid resilience. By positioning itself in both Europe and Asia, Neoen taps into divergent market dynamics—Europe’s mature regulatory frameworks and Asia’s rapidly expanding renewable capacity—strengthening its competitive edge.

In France, the 248 MW Vernou‑la‑Celle‑sur‑Seine project will be the nation’s biggest battery and the first to link directly to RTE’s 400 kV network. This high‑voltage connection allows the system to provide ancillary services such as frequency regulation and voltage support across the densely populated Île‑de‑France region. Partnering with Japanese motor‑maker Nidec, which will supply and maintain the battery modules for 20 years, underscores the cross‑border collaboration essential for scaling storage infrastructure and ensures long‑term operational reliability.

The Japanese Ako Battery project introduces Neoen to a market historically dominated by domestic players. With a 100 MW capacity and a 400 MWh energy store, the facility will help Kansai Electric balance supply from solar and wind farms, addressing Japan’s unique challenges of limited land and a fragmented grid. Collaboration with French contractor Equans and Japanese utility Toho illustrates Neoen’s strategy of leveraging local expertise to accelerate deployment. Together, these projects contribute to Neoen’s ambition of 10 GW of battery capacity by 2030, positioning the company as a global leader in the transition to a low‑carbon, storage‑enabled electricity system.