13.05.2022: Registration of Matthias Jochem as energy auditor according to the German law for energy services and other energy efficiency measures (EDL-G) by the German authority for economy and
export control (BAFA)
05.12.2019: 4-stream consulting becomes a member of Rhein-Ruhr-Power
01.07.2017: Extension of shareholder base
11.01.2016: Incorporation of 4-stream consulting GmbH by Wolfgang Schreier