The Munich-based energy tech company Entrix has secured 3 gigawatts (GW) or 8.5 gigawatthours (GWh) of battery storage capacity across Europe with final investment decisions (FID) already in place, and is receiving an additional €43 million from a consortium of investors. Of this, 2 GW are scheduled to go online in 2026 – a signal that flexibility in the European power market is transitioning from a future topic to investable infrastructure.
What stands out is not just the size of the secured battery storage capacity, but the logic behind it: Entrix positions itself not primarily as a classical project developer, but as a software and trading platform for marketing battery storage across multiple electricity markets. This precisely addresses a bottleneck in Europe’s energy transition, because as volatile solar and wind capacity expands, the need for storage systems that can process price, grid, and ancillary service signals in real time increases.
Founded in 2021, the company now operates more than 70 battery storage systems across Europe – from standalone installations to co-location projects with solar energy. Local teams and offices in Germany, Italy, Spain, and Poland ensure regulatory proximity in core markets.
€43 million for battery optimization, trading, and expansion
The additional capital comes from BNP Paribas via the Solar Impulse Venture Fund, Allianz, Junction Growth Investors, Korys, Aenu, Enpal, Abacon, and the Arvantis Group. With this round, Entrix aims to finance its European expansion as well as further development of its optimization and trading platform.
For the company, the combination of capital and contractually secured storage capacity is strategically important: while many energy startups initially communicate reach or pilot projects, Entrix simultaneously announces financial backing and FID-ready assets. This increases the credibility of the model against project developers, infrastructure investors, and long-term off-takers. This assessment follows from the parallel timing of the funding round and the FID-secured portfolio.
3 GW battery storage capacity as a signal for Europe’s flexibility market
With 3 GW of flexibility under contract, Entrix reaches a scale that stands out in the European storage market. Battery storage is becoming increasingly relevant not only for arbitrage between day-ahead and intraday markets, but also for ancillary services, grid stability, and better integration of renewable energy. Entrix describes its model accordingly as AI-enabled multi-market optimization that enables batteries to respond in real time to market and grid signals.
Market trends support this positioning. In Italy, 6.8 GW of new PV capacity was installed in 2024 according to Italia Solare, further increasing pressure on grids and the importance of flexibility options. In Spain, installed solar capacity reached 50 GW by early 2026; in 2025 alone, around 8.7 GW were added, according to grid operator REE.
Grid stability became a focus following the Iberian blackout on April 28, 2025, when Spain and Portugal experienced a widespread power outage. According to Entso-E, the incident underscored how sensitive highly dynamic power systems are to disruptions and how relevant resilient, flexible capacities have become.
Five core markets: Germany remains central, Poland and Iberia growing fast
Germany remains Entrix’s most important market by capacity. The company points to having operated one of the country’s first large-scale battery storage systems and increasingly focusing on co-location models with renewable generation. Customers mentioned include Meag and Encavis.
Poland is developing in parallel as an important growth market. Entrix had already concluded an exclusive agreement with Greenvolt Power in 2025 for five major battery storage projects with a combined 1.3 GW / 5.2 GWh. This shows that the Eastern European market for storage marketing is increasingly being developed on an institutional level.
Italy, Spain, and Portugal also fit the Munich company’s growth logic: high expansion dynamics in solar energy, increasing price volatility, and regional grid congestion make battery storage economically more attractive. For optimizers like Entrix, this is a favorable environment because the value of storage emerges precisely from intelligent participation in multiple markets.
