Envision Energy and ju:niz Energy have unveiled plans to jointly develop a 442MWh battery energy storage system (BESS) project, known as Smareg 13 (Vöhringen II), in Bavaria, Germany.
Smareg 13 will be the third BESS project to be realised by the two companies, taking the combined volume of their collaboration to about 600MWh.
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ju:niz Energy will oversee the development, financing, and construction of Smareg 13, and manage the battery storage system throughout its operational life.
The project expands ju:niz Energy’s battery storage portfolio in Germany and aligns with its strategy of managing large-scale storage projects across their full lifecycle, from inception through to long-term operation.
The Smareg 13 project will use Envision’s Gen 8 BESS platform, which features four-hour storage duration, advanced battery systems, and grid-forming capabilities designed to deliver reliable energy storage and enhanced grid support.
The system’s low-noise design allows it to be installed in noise-sensitive areas without affecting performance, addressing an important siting requirement for Smareg 13.
Envision senior vice president and EU & LATAM regions president Henry Peng said: “The continued expansion of our partnership with ju:niz reflects the trust built through close cooperation and consistent execution.
“Moving forward with a significantly larger project before our first two projects have completed delivery demonstrates Envision’s role as a trusted long-term technology partner.”
Situated next to the existing Smareg 12 installation, the new project is expected to add significant storage capacity in Bavaria. It aims to help provide additional grid flexibility and balancing in line with Germany’s ongoing integration of renewable energy sources.
The expansion of projects illustrates the ongoing cooperation between the two companies.
ju:niz Energy contributes its experience in developing and operating large-scale battery storage, while Envision provides expertise in battery technology and project delivery.
ju:niz Energy COO Vural Oezcan said: “With Smareg 13, we are taking another major step in the development of our battery storage portfolio.
“The project combines a very advanced development status with four-hour storage technology and will make an important contribution to flexibility and system stability.”
In July 2026, Envision partnered with Pulse Clean Energy to deliver a 129MW/310MWh BESS project in Wolverhampton, West Midlands, UK.
