Green Flexibility, which describes itself as a long-term investor, developer and operator of large-scale BESS projects in Germany, was founded in 2023 by a team largely composed of former employees of residential BESS provider Sonnen.
This includes Sonnen co-founder and CEO Christoph Ostermann, who left the company following its acquisition by Shell. Ostermann spoke with ESN Premium in early 2025 about Green Flexibility’s strategy and said that only those with deep experience would succeed in Germany’s rapidly growing BESS market.
The newly acquired portfolio is participating in Germany’s current round of maturity assessments for high-voltage grid connections. This new process replaces a ‘first-come, first-served’ approach to the grid connection queue and has been largely welcomed by developers.
Jinko ESS signs 400MWh Eastern Europe supply deal
Jinko ESS, the energy storage system integrator subsidiary of major Chinese solar PV manufacturer Jinko Solar, has signed a supply agreement with developer Taliva Energy.
