The 442 MWh Smareg 13 battery energy storage system (BESS) project in Vöhringen, Bavaria, Germany, is advancing through a partnership between ju:niz Energy and Envision Energy. Also known as Vöhringen II, the project will add large-scale electricity storage capacity to ju:niz Energy’s German portfolio and support grid flexibility as renewable energy generation expands.
Announced on November 9, 2026, Smareg 13 will provide 442 MWh of energy storage capacity. The project will use Envision Energy’s Gen 8 battery storage platform. Additionally, it is designed for four-hour storage and will feature grid-forming capabilities to support grid stability. However, the announcement did not disclose its power output in MW, investment value or expected completion date.
ju:niz Energy will oversee project development, financing and delivery. It will also manage the facility’s long-term operation. Meanwhile, Envision Energy will supply the battery storage technology and support project delivery. Smareg 13 is the third project under the companies’ partnership. Together, their portfolio will reach nearly 600 MWh. However, this figure represents the combined capacity of their projects, not Smareg 13 alone.
Smareg 13 BESS: Project Scope and Technical Specifications
The Smareg 13 BESS project will be built next to the existing Smareg 12 battery storage facility in Vöhringen. Additionally, this location will expand ju:niz Energy’s storage presence in the area. It will also strengthen the company’s collaboration with Envision Energy. However, Smareg 12 is already operational, while Smareg 13 remains a separate project under development.
The installation will use Envision’s Gen 8 battery energy storage platform. It combines battery technology with grid-forming capabilities. Additionally, these controls can help stabilise grid voltage and frequency. However, their performance will depend on the system configuration and the requirements of the connected network.
The four-hour storage design means the facility is intended to discharge energy over a longer period than a typical two-hour battery installation. However, the exact discharge rate, usable energy, efficiency and operating parameters for the project have not been disclosed yet.
The Smareg 13 BESS project also features a low-noise design to address site acoustic requirements. Additionally, this is important for battery installations near existing developments and noise-sensitive areas. Cooling systems and other equipment can affect noise levels. However, specific noise limits and performance figures remain undisclosed.
Development Status and Delivery Outlook
Smareg 13 BESS project is currently at an advanced stage of development. Construction has also not started. The project’s commissioning date and cost have also not been disclosed yet.
The project builds on a partnership involving two earlier battery storage developments. However, Envision stated that those projects had not yet completed delivery when Smareg 13 was announced. Consequently, the new development expands the companies’ project pipeline, while further delivery milestones remain to be confirmed.
Contribution to Germany’s Energy Infrastructure
Battery energy storage systems help balance electricity supply and demand. They charge when power is available and discharge when the grid needs additional electricity. Additionally, they support Germany’s growing use of wind and solar energy. These renewable sources vary with weather conditions and time of day.
Smareg 13 aims to provide additional flexibility and grid-balancing capacity in Bavaria. However, its contribution will depend on construction completion, grid connection and operational performance. Furthermore, the project will support the wider expansion of grid-scale storage infrastructure. This is essential for managing changing electricity generation patterns and maintaining a reliable power supply. Other countries in Europe are also working to increase their battery storage portfolio. Some such as the UK are even repurposing former coal site for storage projects as it being done at the Fiddler’s Ferry BESS site in Warrington, England.
For ju:niz Energy, the development adds to a business model covering project development, financing, construction and long-term operation. For Envision Energy, it extends the company’s battery technology deployment in Germany through a growing relationship with a local storage developer. However, the companies have not yet disclosed the full project schedule, financing structure or commercial operating arrangements.
Smareg 13 BESS Project Fact Sheet
Project name: Smareg 13 BESS (Vöhringen II)
Location: Vöhringen, Bavaria, Germany
Project developer: ju:niz Energy
Battery technology supplier: Envision Energy
Energy storage capacity: 442 MWh
Storage duration: Four hours
Battery platform: Envision Gen 8 BESS
Grid capability: Grid-forming functionality
Site context: Adjacent to the operational Smareg 12 BESS
Project announcement: November 9, 2026
Development status: Announced. It’s in the advanced stage of development
Primary purpose: Electricity storage, grid flexibility and renewable energy integration
Smareg 13 BESS Project Principal Companies
ju:niz Energy GmbH : Responsible for developing, financing and delivering Smareg 13, and for operating the battery storage system over the long term.
Envision Energy : Supplier of the Gen 8 battery storage platform and technology and project delivery partner.
SMAREG 13 GmbH & Co. KG : Registered project operating entity listed in Germany’s Market Master Data Register (Marktstammdatenregister)
Leave a Reply