ENGIE Expands European Battery Storage Portfolio Beyond 1 GW to Support Renewable Integration

Paris, France – April 2026 – French energy giant ENGIE is accelerating its energy storage strategy across Europe, expanding its battery energy storage systems (BESS) portfolio to over 1 GW, as part of its broader push to support renewable energy integration and grid stability.

The latest expansion includes major developments in Spain and France, reinforcing ENGIE’s position as a key player in Europe’s fast-growing energy storage market.

Strategic Expansion Across Key European Markets

In Spain, ENGIE has acquired two large-scale standalone BESS projects totaling 278 MW / 1.1 GWh, located in Andalusia (Álora and Tarifa). These projects are expected to become some of the largest battery storage systems currently under development in the country. 

Construction is scheduled to begin in 2027, with phased commissioning in 2028. The systems are designed to store up to four hours of electricity, helping balance supply and demand as renewable penetration increases. 

Meanwhile, in France, ENGIE has started construction of its first domestic BESS project, a 110 MW / 220 MWh facility in Castelnau d’Aude. The project is expected to come online by summer 2027, marking a significant milestone in the company’s home market. 

Portfolio Reaches Critical Scale

With approximately 700 MW already operational or under construction, these new projects push ENGIE’s European BESS capacity beyond the 1 GW threshold, spanning eight countries, including Germany, Belgium, Italy, the Netherlands, Romania, and the United Kingdom. 

This expansion reflects a broader industry trend, where energy storage is becoming essential to managing the intermittency of renewable energy sources such as solar and wind.

Enabling Grid Stability and Energy Transition

According to Paulo Almirante, Senior Executive Vice President of Renewable & Flexible Power at ENGIE, battery storage plays a critical role in addressing one of the biggest challenges of the energy transition: “Combining renewable growth with system stability.” 

By enabling flexible power supply and improving grid resilience, BESS solutions allow utilities to deliver more reliable and affordable low-carbon electricity.

Long-Term Growth Ambitions

The expansion aligns with ENGIE’s long-term strategy to reach 95 GW of renewable and storage capacity by 2030, building on its existing 57.2 GW installed capacity as of 2025. 

As Europe continues to accelerate decarbonization efforts, energy storage is expected to become a cornerstone technology supporting the continent’s transition to a fully renewable-powered grid.