A new scale in battery storage optimization: Münch Energie & suena energy
- Pia Armbruster
- Mar 24
- 4 min read
suena energy takes over the optimization of three large-scale battery projects from Münch Energie – including Germany's largest grey power co-location
The demand for flexibility in the German power system is growing rapidly. As the expansion of wind and solar accelerates, so does the challenge of aligning electricity generation with consumption over time. Large-scale battery storage systems play a key role in addressing this: they absorb excess energy at scale, feed it back into the grid when needed, and help stabilize the system. However, battery storage systems only unlock their full potential through intelligent market optimization.
Against this backdrop, Münch Energie and suena energy are expanding their existing partnership: suena energy takes over the optimization of three large-scale battery storage systems – including Germany’s largest grey power co-location.
Three storage projects with strong market impact
With this latest project, Münch Energie is setting new benchmarks in the German storage landscape. In Saxony-Anhalt, a storage cluster is emerging that reaches new dimensions both technologically and in terms of market integration.
The three systems – including one co-location project with grid supply (grey power) and two stand-alone systems – each have a nominal power of 49.5 MW and a capacity of 101 MWh. In total, this results in around 150 MW of power and 300 MWh of storage capacity. According to Münch Energie, this makes it the largest connected battery storage project currently in operation in Germany.
Germany's largest grey power co-location
A key highlight is the co-location system, which has been in operation since February 2026. It shares a grid connection with a photovoltaic plant (60 MWp) and has a combined grid connection capacity of around 50 MW. This makes it currently the largest battery storage system in Germany that shares a grid connection with a PV plant while also being able to draw electricity from the grid.
This model demonstrates how limited grid connection capacity can be used far more efficiently by combining generation and storage – a critical advantage given increasing grid constraints. Co-location projects of this kind are therefore considered a blueprint for the next phase of battery storage deployment in Germany.
At the same time, sharing a grid connection increases the complexity of both operations and commercialization. In particular, PV generation must be integrated into the storage system’s trading strategy. This is where suena energy’s data-driven optimization algorithms come into play: they enable the storage system to be operated optimally even under complex conditions, maximizing both economic returns and system value.
Stand-alone storage as a flexibility backbone
The project is complemented by two stand-alone large-scale battery storage systems, which have been in operation since March 2026. These systems are fully grid-connected and can flexibly absorb electricity, store it, and feed it back into the power system when needed.
Battery storage systems respond to market signals and system needs within seconds. Deployed across various energy and flexibility markets, they help balance supply and demand, mitigate price spikes, improve the integration of renewable energy, and provide additional grid-supporting services. This makes optimization the key lever for translating technical flexbility into both economic value and system benefits.
„The value of a storage system is not defined by its size alone, but by its impact on the market and the system. When flexibility is deployed precisely, it strengthens renewable integration, grid stability, and economic performance at the same time. Münch’s project marks a new scale for the German market. With these assets, we are supporting three forward-looking projects.” – Lennard Wilkening, CEO suena energy
Expanding a successful partnership
The collaboration between Münch Energie and suena energy dates back to 2025, initially focusing on the direct marketing of solar parks. With these new storage projects, the partnership now reaches a new level.
„Projects like these require not only trong technological foundations but also experienced partners in commercialization. With suena energy, we are seeing a collaboration that combines technical expertise with a clear understanding of our project requirements." – Mario Münch, Managing Director Münch Energie
Optimization as a key enabler of the energy transition
This partnership reflects a broader shift in the energy market: it is no longer just about building storage systems, but about integrating them intelligently into the overall market and energy system. In the next phase of the energy transition, the focus is on making renewable generation not only available, but flexible, reliable, and economically viable. Large-scale battery storage systems – and their optimization – are therefore becoming a central building block of the power system of the future.
About Münch Energie
Münch Energie is committed to providing a reliable and affordable supply of green, sustainable energy. Through customized solutions and over two decades of experience, the company creates synergies between municipalities, the agricultural sector, citizens, and industry, delivering long-term environmental and economic benefits and helping regions build a sustainable future. Münch is now one of Germany’s largest decentralized energy suppliers and ranks among the leading companies in the large-scale storage segment and in smart grid solutions.
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