Opening and Commissioning of the Utility-Scale Battery Storage System in Balzhausen
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With a power output of 40 MW and a storage capacity of 80 MWh, the system is one of the largest battery storage systems in Bavaria — demonstrating that grid-oriented integration of utility-scale battery storage into distribution grids works.
Balzhausen/Kempten, May 04, 2026
green flexibility has officially opened its new battery storage system in Balzhausen. With a power output of 40 MW and a storage capacity of 80 MWh, the system is the largest battery storage facility in the Swabia region. green flexibility is investing around €35 million in the project.
More than 80 guests from politics, the energy sector and surrounding municipalities accepted the invitation to Balzhausen. They saw first-hand how a utility-scale battery storage system works — and the concrete role battery storage will play in creating a stable, renewable energy system.
The welcome address by Klaus Holetschek, Chairman of the CSU parliamentary group in the Bavarian State Parliament, highlighted the importance of battery storage for the energy transition. Particularly in times of growing geopolitical challenges, one point became clear: the expansion of renewable energy requires storage technologies that make electricity available when it is needed — thereby combining security of supply, grid stability and regional economic value creation.
The Balzhausen site is also particularly significant because of its technical integration. The battery storage system is the first facility connected to the so-called “Einspeisesteckdose” of LEW-Verteilnetz. This pilot project enables a grid-oriented integration of generation and storage facilities and opens up new opportunities for making use of existing grid connection points.
Barbara Plura, Asset Manager at LEW-Verteilnetz and Project Manager for the “Einspeisesteckdose”, said:
“We are very pleased that the first facility connected to our ‘Einspeisesteckdose’ is now operational. Battery storage systems are indispensable to the energy system of the future. Particularly in Bavarian Swabia, with its high density of photovoltaic installations and strong renewable energy generation, they help us use the electricity grid more efficiently.”
Christoph Lienert, Co-Founder and COO of green flexibility, shared his personal reflections at the end of the event:
“What I take away from this project is that you have to be bold. And that is exactly what we are. Balzhausen shows that new solutions become possible when grid operators, municipalities, landowners, partners and us as operators take responsibility together. Projects like this don’t happen because everything is easy — they happen because people are willing to take new paths.”
green flexibility will commission at least five more battery storage systems this year, continuing to expand flexible, grid-supportive storage infrastructure across Germany. See our Projekte.
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