sonnen files for insolvency in Germany as US sales double

Residential battery maker sonnen GmbH has filed for insolvency in Germany two months after Shell sold it to investment group TIVEN, notifying roughly 400 employees in Wildpoldsried, Bavaria. Meanwhile sonnen USA says sales have doubled and production tripled, with plans to deliver over 180 MWh of home storage in 2026.

• German insolvency affects about 400 employees in Bavaria
• sonnen intends to keep supporting over 150,000 existing customers
• sonnen USA doubled sales and tripled production in Georgia
• US unit expects to deliver more than 180 MWh in 2026