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Mainzer Stadtwerke AG

Mainz, Germany

SolarWindHydroHydrogenEnergy StorageGovernment

About

Mainzer Stadtwerke AG is a government headquartered in Mainz, Germany specializing in Solar, Wind, Hydro.

Mainzer Stadtwerke AG is a publicly-owned municipal utility company serving the Mainz region and 19 surrounding municipalities with 536,000 residents. Core services include electricity and gas distribution via Mainzer Netze GmbH, water supply from three owned water works serving 270,000 residents, heating networks, public transit (buses and trams), and digital services including broadband and EV charging infrastructure. The company operates 50+ subsidiaries and participates in renewable energy development, including hydrogen production through the Energiepark Mainz (partnership with Linde for electrolysis-based hydrogen generation), pumped storage systems (Niederheimbach), solar installations, and wind energy expansion. Mainzer Stadtwerke AG operates affiliated foundations focused on climate protection and energy efficiency, offering building renovation support programs and sustainability initiatives. The company reported 2024 revenues of approximately 881 million euros and emphasizes climate neutrality and environmental responsibility as core business principles.

municipal utilityrenewable energyhydrogensolarwindwater managementpublic transportenergy efficiencyclimate protectionGermany

Headquarters

Mainz, Germany

Company Type

Government

Annual Revenue

>$1B

Business Models

B2BB2C

Value Chain

DevelopmentEngineeringConstructionO&MConsultingCommunity Engagement

Service Regions

Mainz, Landkreis Groß-Gerau, Rheinhessen, 19 municipalities with 536,000 residents

Projects

Energiepark Mainz

Pumpspeicherkraftwerk Niederheimbach

Heiligkreuz-Viertel

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