EWE is one of Germany's largest municipal enterprises. The Ems-Weser-Elbe Versorgungs- und Entsorgungsverband (EWE-Verband) is an alliance formed of 21 cities and districts in the Ems/Weser/Elbe region.
Through its associated municipal companies, the EWE-Verband indirectly holds a 74 per cent majority share in EWE AG, which is a non-listed public company. Weser-Ems-Energiebeteiligungen GmbH (WEE) holds a 59 per cent stake in the company, and Energieverband Elbe-Weser Beteiligungsholding GmbH (EEW) holds 15 per cent.
The infrastructure investment company Ardian became a strategic growth partner on 28 February 2020 with a 26 per cent share in EWE AG.