Large-Scale Battery Storage for the German Market: Lynus Starts Production in Bavaria
Tuggen – Swiss company Lynus AG has begun manufacturing large-scale battery storage systems in Germany. At its site in Dillingen an der Donau, Bavaria, the company, which is part of the Enerfin AG corporate network, has started producing modular systems that combine battery storage, energy management and marketing and were developed for the German market.
Dillingen: BESS Cube 2.0 with 800 kWh and Up to 500 kW
Lynus AG's new production site is located in Dillingen an der Donau. The company builds the BESS Cube 2.0 there, a modular storage system with around 800 kWh of usable battery capacity and a charge and discharge power of up to 500 kW, depending on the version. According to the company, production has started at ten storage units per week and is to rise to 20 later. The system is scaled by cascading.
Lynus develops and produces battery storage systems as well as energy management software based on machine learning, which optimises energy flows and opens up additional revenue opportunities in power markets through direct power marketing and flexibility marketing. According to Lynus, the energy management system (EMS) is already in use at more than 1,500 installations in Germany and Switzerland. The Cube is complemented by the EMS and by multi-market marketing of electricity and storage flexibility.
According to Lynus CEO Paul Hauser, adapting storage systems to local grid and site conditions is a regular challenge for EPC companies and operators. “Since we ourselves develop and manufacture the BESS Cube 2.0 in Germany, we can respond quickly to project-specific requirements and significantly accelerate adjustments,” said Paul Hauser, CEO of Lynus.
Grid Connection, Co-Location and Technology: DC and AC Coupling for New and Existing PV Parks
Requirements for a storage project can differ considerably depending on the grid operator, voltage level and existing infrastructure. Lynus stressed that the configuration can be flexibly adapted to project-specific grid connection conditions. According to Lynus, one focus in developing the Cube was integration into PV plants, in particular in co-location projects in which existing photovoltaic parks are retrofitted with battery storage. With a footprint of just over 5 square metres and a weight of around 7.5 tonnes per Cube, the system has a compact design.
For new photovoltaic plants, the Cube can be connected directly on the DC side via MPPT modules. According to Lynus, this avoids additional AC components such as inverters and reduces conversion losses. AC coupling is suited to retrofitting existing plants. The storage system can also be used as a grid-charging (grey power) storage system.
The Cube uses lithium iron phosphate (LFP) cells rated for more than 8,000 full cycles at 80 percent remaining capacity. The rack system achieves a DC round-trip efficiency of at least 94 percent at 0.5 C. The storage unit is available in 400, 690 and 800 volt versions. A liquid cooling and heating system keeps the cells within a temperature range that is as uniform as possible. The safety concept comprises smoke, gas and temperature sensors, an automatic aerosol extinguishing system and mechanical pressure relief.
2026 Storage Additions Exceed Prior Year: Five of the Ten Most Powerful Plants Entered Operation
Battery storage additions in Germany have already surpassed the entire previous year by the end of August 2026. According to the IWR analysis of the Market Master Data Register of the BNetzA, storage systems with more than 8,200 MWh of storage capacity had gone into operation by the end of August 2026. In 2025 as a whole, the figure was around 6,900 MWh. Power capacity, at around 4,100 MW, also already exceeds the previous year's figure of around 4,000 MW. On a calculated monthly average, additions in 2026 so far amount to around 510 MW and more than 1,000 MWh, compared with around 330 MW and 575 MWh in 2025. The average storage duration of the new plants has risen from 1.7 to 2.0 hours. The analysis covers battery storage systems of all sizes.
In the IWR ranking of Germany's most powerful battery storage plants (as of September 26, 2026), the plants ranked second to fourth entered operation this year. In total, five of the ten plants date from 2026. RWE Generation's plant in Hamm leads with 140.0 MW and 150.8 MWh (commissioned in December 2024), followed by Seerose Energie in Stendal with 104.5 MW and 209.0 MWh (July 2026). For the five plants from 2026, storage duration is around 2.0 to 2.5 hours on a calculated basis.
Source: IWR Online, 06 Oct 2026
