Stadtwerke Hemer
Stadtwerke Hemer is the municipal utility company of Hemer, Germany, which since 2025 has leased its energy and water operations to the ENERVIE Group while retaining ownership of the assets and the local public baths.
Last updated September 27, 2026
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Overview
Stadtwerke Hemer GmbH is the municipal utility company of the town of Hemer in North Rhine-Westphalia, Germany. Until 31 December 2024 it was the local supplier of gas and water to the town, and through its subsidiary Energieversorgung Ihmert GmbH & Co. KG it also supplied electricity to the Hemer district of Ihmert. The company's core business covered the operation of the gas and water networks, energy sales, and drinking water production, alongside the operation of municipal swimming facilities. Since 1 January 2025, the operational side of the business has been transferred under a comprehensive lease model to the ENERVIE Group. Under this arrangement, Stadtwerke Hemer GmbH leased its gas, electricity and water networks to ENERVIE Vernetzt GmbH, which is now responsible for connection requests and network provision. The sales side is handled by Mark-E AG as distribution partner, while Enervie – Südwestfalen Energie und Wasser AG – took over the essential operational activities in electricity, gas and water, including sales, network operations and drinking water extraction. Stadtwerke Hemer remains in existence as an asset-owning company: it continues to manage and finance the electricity, gas and water supply assets that remain in municipal ownership, and it retains the operation of the town's swimming baths, including the Freibad Am Damm and the new Felsenmeerbad, together with the staff employed there. Other Stadtwerke employees were taken over by the ENERVIE Group. The shareholders of Stadtwerke Hemer GmbH are the town of Hemer with 92.16%, Mark-E AG with 4%, and Energieversorgung Ihmert GmbH & Co. KG with 3.84%. The managing director is Monika Otten, and the chairman of the supervisory board is council member Heiko Lingenberg. Historically, the company reported revenue of €12.095 million in 2010, down from €12.793 million in 2009, and a profit of €1,266,452.78 in 2010. It delivered 197 million kWh of gas and 1.662 million m³ of water in 2010, and operated a gas network of 81.262 km and a water network of 195.104 km, serving 2,803 gas connections and 7,022 water connections with 33 employees. Its subsidiary Energieversorgung Ihmert GmbH & Co. KG, wholly owned by Stadtwerke Hemer, supplied electricity and gas in the Ihmert district, with revenue of €3.025 million in 2010 from 6.8 million kWh of gas and 14.3 million kWh of electricity.
History
Stadtwerke Hemer GmbH was the municipal utility company of the town of Hemer in North Rhine-Westphalia, Germany. Until 31 December 2024, it supplied the town with gas and water, and through its subsidiary Energieversorgung Ihmert GmbH & Co. KG it also supplied electricity to the Hemer district of Ihmert. The company operated the local gas and water networks, handled energy sales, produced drinking water, and ran municipal swimming facilities. In its later years as an integrated utility, the company reported revenue of €12.095 million in 2010, compared with €12.793 million in 2009, and a profit of €1,266,452.78 in 2010. It delivered 197 million kWh of gas (2009: 179 million kWh) and 1.662 million m³ of water (2009: 1.648 million m³). Its gas pipeline network had a total length of 81.262 km, and its water network was 195.104 km long. It served 2,803 gas connections and 7,022 water connections, and employed 33 people (2009: 31). Its subsidiary Energieversorgung Ihmert GmbH & Co. KG, wholly owned by Stadtwerke Hemer, supplied electricity and gas in the Ihmert district; its revenue was €3.025 million in 2010, from 6.8 million kWh of gas and 14.3 million kWh of electricity. The management of EVI was carried out by Stadtwerke Hemer. A major structural change took place with effect from 1 January 2025. Under a comprehensive lease model with the ENERVIE Group, the operational business of energy and water supply was transferred to ENERVIE subsidiaries. Stadtwerke Hemer GmbH leased its gas, electricity and water networks to ENERVIE Vernetzt GmbH, which became responsible for connection requests and network provision. Mark-E AG became the distribution partner for all questions relating to energy supply. Enervie – Südwestfalen Energie und Wasser AG – took over the essential operational activities in electricity, gas and water, including sales, network operations and drinking water extraction. Stadtwerke Hemer remains as an asset-owning company: it continues to manage and finance the electricity, gas and water supply assets that remain in municipal ownership, and it retains the operation of the town's swimming baths, including the Freibad Am Damm and the new Felsenmeerbad, together with the staff employed there. Other Stadtwerke employees were taken over by the ENERVIE Group. The shareholders of Stadtwerke Hemer GmbH are the town of Hemer with 92.16%, Mark-E AG with 4%, and Energieversorgung Ihmert GmbH & Co. KG with 3.84%. The managing director is Monika Otten, and the chairman of the supervisory board is council member Heiko Lingenberg.
Stadtwerke Hemer GmbH leased its gas, electricity and water networks to ENERVIE Vernetzt GmbH and transferred operational business to the ENERVIE Group under a comprehensive lease model.
Products and positioning
Municipal utility focused on local energy and water supply, now operating under a lease model with the ENERVIE Group while retaining asset ownership and public baths.
Natural gas supply
Supply of natural gas to households and businesses in Hemer.
Electricity supply
Supply of electricity, including through subsidiary Energieversorgung Ihmert GmbH & Co. KG in the Ihmert district.
Drinking water supply
Production and supply of drinking water in Hemer.
Swimming pool operation
Operation of the Freibad Am Damm and the new Felsenmeerbad.
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