Mainzer Stadtwerke

Founded in 1971, Mainzer Stadtwerke is a state-owned enterprise headquartered in Mainz, Germany with approximately 1001-5000 employees specializing in Solar, Wind, Hydro.

Mainzer Stadtwerke is a municipal utility company providing electricity, gas, heating, water, public transport (ÖPNV), broadband and other technical services to Mainz and the surrounding region. The company group operates more than 50 subsidiary and affiliated companies. Key activities include renewable energy production (solar, wind, hydropower), energy efficiency projects, climate protection initiatives, and infrastructure development. The company is investing in hydrogen production through the Energiepark Mainz and operates a pumped-storage hydroelectric facility. Mainzer Stadtwerke is fully owned by the City of Mainz and is committed to climate neutrality and sustainable resource management.