In order to meet the growing demand of electricity for the coal mines of the Western Styria coal mining area and to use the non recoverable coal, which was of poor quality, in an economical way the construction of a steam power plant in Bärnbach in 1920 laid the foundation for a location in the region of Bärnbach-Voitsberg. The lignite reserves in the coal mining area at Oberdorf ensured the continued existence of coal mining in Western Styria and the construction of three more power plants:? 1941:Voitsberg I? 1952:Voitsberg II? 1983: Voitsberg IIIDue to the closure of the mining industry in 2004 because of unprofitability and depletion of lignite deposits, Voitsberg III was closed on May 13, 2006. In 2008 Mirko Kovats acquired the power plant with the intention to convert the power plant into a hard coal-fired power plant. This operation caused substantial controversy among the population: The association between power production and environmental influence was a matter of increasing interest to the public over the years. The opponents, on the one hand, highlighted the environmental pollution and concomitant the aspects and impacts on the health and tourism. The proponents of the projects, on the other hand, brought forward the economic aspects, such as the job creation and the stimulation of the economy in the district of Voitsberg.However, due to financial difficulties and the insolvency of the Group of Mirko Kovats on April 14, 2011, the application for a conversion was withdrawn by the district administration of Voitsberg. This paper has set the goal to give the reader an insight into the historical background of the power plant site Bärnbach-Voitsberg. The dissertation deals with the chronological and historical development of the plants and tries to convey the essence of the site?s development.