History
| 1873 | The City of Mannheim takes over Mannheimer Gaswerk and places it under municipal management |
| 1888 | The Käfertal waterworks commences operations. This marks the beginning of the central drinking water supply in Mannheim. |
| 1889 | The electricity works at the industrial port commences operations with an output of 3.5 megawatts. This marks the beginning of the electricity supply in Mannheim. |
| 1900 | The Luzenberg gasworks commences operations. |
| 1906 | The City of Mannheim takes over the electricity works. |
| 1923 | The Großkraftwerk (power plant) Mannheim (GKM) commences operations. |
| 1958 | Reorganisation of the waterworks company (WGM) as Gas- und Wasserwerke Rhein-Neckar (Rheinag) |
| 1959 | The inner city of Mannheim is connected to the district heating supply. |
| 1962-66 | Construction of the office building on Luisenring |
| 1964 | The Northern Heating and Power Plant (HKW Nord) commences operations on Friesenheim Island. |
| 1974 | The proprietary operations of the City of Mannheim are re-established as Mannheimer Versorgungs- und Verkehrsgesellschaft mbH with the subsidiaries SMA, RHE and MVG. |
| 1986 | The flue gas cleaning facility at HKW Nord commences operations. |
| 1987 | The district heating pipeline between Mannheim and Heidelberg commences operations. The route has a length of 13.6 km. |
| 1990 | An engineering agreement is signed with the City of Warsaw in respect of the renovation of the district heating supply. |
| 1993 | Compilation of the energy supply concept for Budapest. |
| 1996 | An energy saving analysis for the supply of district heating in Rumania is conducted by MVV Consulting. |
| 1998 | Realignment and renaming of SMA as MVV Energie AG. |
| 1999 | The stock market flotation means that MVV Energie AG is partially privatised in March. |
| 2000 | MVV Energie acquires a majority shareholding in Energieversorgung Offenbach AG (EVO). MVV Energie acquires 100 percent of the shares in Köthen Energie GmbH and 25.1 percent of the shares in Stadtwerke Buchen. |
| 2001 | MVV Energie AG acquires 49.9 percent shareholdings in Stadtwerke Solingen GmbH (SWS GmbH) and in Stadtwerke Ingolstadt Beteiligungen GmbH & Co. KG (SWI). MVV Energie acquires 85 percent of the shares in the municipal district heating company Teplárny Brno. In 2004, the Czech city of Brno exercises its right to repurchase the shares. |
| 2002 | A consortium of Ruhrgas Energie Beteiligungs-AG and MVV ESCO Polska S.A. acquires 49.9 percent of the shares in the district heating supplier of the city of Stettin (Poland). Fernwärmeversorger der Stadt Szczecin (Polen). |
| 2003 | Commencement of operations at the biomass power plants in Mannheim, Königs Wusterhausen and Wicker, as well of the new waste incinerator at the energy from waste plant in Mannheim. Commencement of operations at the first fuel cell in Mannheim. |
| 2004 | MVV Energie takes over 51 percent of the shares in Stadtwerke Kiel. |
| 2005 | Formation of MVV Energiedienstleistungen GmbH and MVV Umwelt GmbH Capital increase about almost 10 % Commencement of operations at the waste-to-energy plant TREA Leuna I |
| 2006 | Formation of Shared service companies: 24/7 Netze GmbH 24/7 United Billing GmbH 24/7 IT-Services GmbH 24/7 Metering GmbH 24/7 Trading GmbH 24/7 Insurance Services GmbH MVV Energiedienstleistungen GmbH acquires IVB Immobilien Versorgung GmbH, Berlin and Industriepark Gersthofen Servicegesellschaft mbH & Co.KG (IGS) |
| 2007 | Commencement of operations at the waste-to-energy plant TREA Leuna II Capital increase about almost 18 % |
| 2008 | Launch of nationwide electricity and gas sales (Secura Energie GmbH) Refurbishment of head office building on Luisenring in Mannheim Founding of MVV Environment Ltd. Sale of MVV Polska |
| 2009 | Launch of district heating expansion and concentration programme in Mannheim Start of construction work on district heating pipeline from Mannheim to Speyer Launch of implementation phase for MVV 2020 strategy project Launch of operations at new boiler no. 6 at cogeneration plant on Friesenheimer Island in Mannheim |
| 2010 | MVV Energie successfully enters wind power market with acquisition of a wind farm in Plauerhagen (Mecklenburg-Vorpommern) Operations begin with the new district heating transit pipeline to Speyer (21km) Foundation of Shared Services Center GmbH as the holding company for the Group's shared service companies |
| 2011 | Contract awarded to build energy from waste plant in Plymouth/UK Construction of a biomethane plant in Klein Wanzleben (Sachsen-Anhalt) |