For years, Sono Motors was considered one of the best-known startups in the German mobility industry. The company aimed to transform the automotive industry with the Sion solar car, raised hundreds of millions of euros from investors for the project, and even made the leap to the US tech stock exchange Nasdaq in 2021. After the vehicle project was discontinued in early 2023, the company focused exclusively on developing and marketing solar technology for buses, trucks, and other commercial vehicles. However, even this strategic shift was ultimately unable to resolve its financial problems.
CEO speaks of “bitter disappointment”
In a statement on the opening of insolvency proceedings, management described the step as “a bitter disappointment.” Over the past few months, intensive efforts had been made to place the company on a viable financial footing. However, despite various efforts, it was not possible to secure sustainable financing.
Back at the end of May, the Munich Local Court had ordered preliminary insolvency administration. Now, regular insolvency proceedings have been opened.
From the Sion solar car to B2B solar business
The insolvency marks the end of an extraordinary startup story. Sono Motors was founded with the vision of bringing an affordable electric car with integrated solar cells to the market. The Sion model developed into one of the most well-known German e-mobility projects and secured thousands of reservations.
At the beginning of 2023, however, the company pulled the plug and ended its vehicle program. Instead, Sono Motors focused entirely on solar technology for commercial vehicles – such as solar modules for buses, refrigerated vans, and trucks designed to reduce energy consumption and increase range. Following self-administered insolvency proceedings, the company initially managed to restructure in 2024.
Even the restart failed
However, hopes for a successful restart were not fulfilled. As early as March, the former parent company Sono Group announced it was stopping funding for the solar division and strategically refocusing completely. In May, the subsidiary was transferred to management, marking Sono Group’s final exit from the solar business. Today, the publicly listed company pursues a digital asset treasury strategy and no longer holds any shares in Sono Motors GmbH.
Major setback for the Munich startup ecosystem
With the insolvency, one of Munich’s most prominent climate tech startups disappears. Hardly any other German startup generated as much international attention in recent years – from the vision of a solar car to the Nasdaq IPO and the realignment toward solar technology for commercial vehicles.
At the same time, this development highlights the challenges faced by capital-intensive hardware startups. Even after a successful restructuring and a fundamental shift in strategy, Sono Motors did not succeed in securing sufficient long-term capital for its business operations.
