Munich-based Entrix just landed €43 million in fresh funding and hit 3 GW of contracted battery storage capacity across Europe. With 2 GW set to go live this year, the company is betting big on a simple idea: batteries are no longer optional. They are the backbone of Europe’s clean energy future.
What the €43 Million Funding Means for Entrix
2 Entrix has raised €43 million in additional capital and has reached 3 GW / 8.5 GWh of contracted battery storage capacity. This is a major milestone for a company that did not exist five years ago. 3 The round is led by Belgian energy investors Junction Growth Investors and Korys. Also participating are solar unicorn Enpal, BNP Paribas via the Solar Impulse Venture Fund, insurance group Allianz, as well as AENU, Abacon, and the Arvantis Group.
The investor list tells a story on its own. When names like Allianz and BNP Paribas write checks for a battery optimisation startup, it signals that big institutional money sees flexible energy storage as a safe, long-term bet.
3 Entrix now operates more than 70 battery storage systems across Europe. The company launched in 2021 with the operation of one of the first large-scale storage projects in Germany and has rapidly grown into one of Europe’s leading providers of storage optimisation, without building assets itself. That last part matters. Entrix does not own or build batteries. It makes them smarter.
Entrix battery storage optimisation funding Europe 2026 clean energy
How Entrix Turns Batteries Into Revenue Machines
So what exactly does Entrix do? Think of it as the brain behind Europe’s biggest batteries.
1 Entrix optimises battery storage systems across all relevant electricity markets, including balancing services, day-ahead and intraday trading. 1 Its AI-driven trading and optimisation enables batteries to respond in real time to price signals, grid needs and portfolio strategies.
In simple terms, the platform decides when to charge, when to discharge, and where to sell power for the highest return. Every second counts in energy trading, and Entrix uses artificial intelligence to make those split-second decisions across multiple markets at once.
3 Beyond short-term trading, Entrix is developing long-term revenue models for battery storage. Together with financial institutions and long-term offtakers, the aim is to generate stable, predictable revenue streams that enable the continued build-out of the energy transition.
This is what separates Entrix from a simple trading desk. The company is building a full revenue ecosystem around batteries.
3 Customers include major Independent Power Producers, infrastructure investors, and municipal utilities, as well as companies such as MEAG (Munich Re), Encavis, and Deutsche Bahn Energie.
Why Europe Desperately Needs Flexible Energy Storage
The timing of this raise is not a coincidence. Europe’s power grid is under growing pressure from multiple directions.
2 Europe’s continued exposure to unstable fossil fuel markets, which set marginal power prices across much of the continent, has made accelerating the energy transition not only a climate imperative but also a strategic one. 2 The need for flexibility is further amplified by the rapid growth of data centres, which require uninterrupted, stable power supply at scale.
Consider these numbers:
- 24 The EU deployed 27.1 GWh of battery storage in 2025, a 45% year-on-year growth. Europe has expanded its battery fleet tenfold since 2021, rising from 7.8 GWh to 77.3 GWh.
- 24 To meet its energy flexibility needs by 2030, the EU must repeat this tenfold increase, scaling to around 750 GWh by the end of the decade.
- 16 Aurora Energy Research estimates that €24 billion will be invested in four-hour battery systems alone by 2030.
2 The April 2025 Iberian grid blackout also highlighted the critical importance of flexible capacity and advanced balancing services to safeguard grid reliability. That single event was a wake-up call for governments and investors alike.
Battery storage is no longer a nice-to-have supplement for renewables. It is critical infrastructure.
Entrix Expands Across Five European Markets
3 Entrix is active in five European markets at different stages of the energy transition. Germany remains the largest market by capacity.
Here is a quick snapshot of where Entrix is growing:
| Market | Key Details |
|---|---|
| Germany | Largest market by capacity; home to Entrix HQ in Munich |
| Poland | 3Local team in Warsaw; strategic partnership with Greenvolt; first five projects going live in 2026 |
| Italy | 3Added more than 5 GW of solar in 2024 alone, driving price volatility and grid congestion |
| Spain | 2Added more than 20 GW of solar capacity in recent years, increasing need for storage |
| Portugal | Part of the Iberian expansion alongside Spain |
The Poland move is especially interesting. 15Greenvolt Power, backed by KKR, has entered an exclusive agreement with Entrix to optimise five battery storage projects in Poland. The portfolio totals 1.3 GW and 5.2 GWh, representing one of the largest storage developments currently planned in the country.
2 More broadly, battery storage is becoming the backbone of a fossil-free energy system, bridging the gap between intermittent renewable generation and reliable, around-the-clock power supply.
The Bigger Picture: A Sector on Fire
2 Entrix’s €43 million raise comes amid a broader wave of investment into battery storage, optimisation software and grid-flexibility platforms across Europe. 5 Recent examples include Terra One (Berlin, €150 million), Ostrom (Berlin, €20 million), TWAICE (Munich, €24 million), Return (Amsterdam, €300 million), iwell (Utrecht, €27 million), Dexter Energy (Amsterdam, €23 million), Capalo AI (Helsinki, €11 million), and others. In aggregate, these rounds represent roughly €634 million including Entrix.
That is over half a billion euros flowing into European battery storage and optimisation companies in recent months alone.
21 2025 marked the first year utility-scale battery storage overtook residential in MWh deployments across the EU. The sector has clearly shifted from a residential rooftop story to a grid-scale industrial revolution.
“The scale of projects entrusted to us reflects a fundamental shift in the energy system: flexibility is now critical infrastructure.” Steffen Schülzchen, Founder and CEO, Entrix
27 Prior to founding Entrix in 2021, Schülzchen was a strategy consultant with McKinsey and Company, advising large European utilities on matters regarding the energy transition. He saw the gap between renewable energy growth and the grid’s ability to handle it. Entrix was built to close that gap.
With €43 million in fresh capital, 3 GW of contracted capacity, and the entire continent racing to build out flexible energy infrastructure, Entrix sits at the center of one of Europe’s most urgent and exciting transitions. The question is no longer whether batteries will reshape the grid. It is how fast. For the millions of European families and businesses who depend on stable, affordable electricity, companies like Entrix may hold the answer. Drop your thoughts in the comments below and let us know what you think about Europe’s battery storage revolution.
