Electricity plays an important role in private life as well as for the economy. New challenges arise due to the increasing demand and changes in the legislation in the whole electricity. In this master thesis a technical and economical analysis of the markets in Austria, Switzerland and the Czech Republic will be performed. Initially the focus is set on the structure of the production of these countries, resulting in a summary of all power plants examined. The most important electricity generation companies, for example "Verbund" in Austria, are introduced in separated chapters. To show the cost structure of these companies balance sheet analysis for every country were performed as part of this master thesis. In order to meet the growing demand and to replace old power plants, new power plants need to be built. These projects and the potential of renewable energy resources in these countries are discussed. A part of this thesis focuses on the electricity grids within the three countries as well as the cross-border transmission lines. To explain the topography of the national grid, the transmission and distribution system operators and their expansion projects will be presented. Regulatory offices are monitoring the competition at the electricity markets, where electricity can be traded via a power exchanges or bilaterally (over the counter). Austria and the Czech Republic have their own power exchanges (EXAA and PXE), for Switzerland the German power exchange EEX is relevant. In addition to the markets, trading options of power exchanges as well as price indices are explained. While concentrating on each country and its specifics additional details are explained. For Austria the balancing energy management, for Switzerland the liberalization of the market since 2008 and for the Czech Republic the market coupling with Slovakia.