A reasonably secure supply with electricity based services is an important prerequisite for the development of the Austrian economy. Since restructuring of the European electricity markets has started, electricity supply faces epoch-making changes. Caused by liberalisation, the regulated and planned provision of electricity turned into a market where customers can freely choose their electricity supplier. So far, a particular feature of liberalisation has been a significant reduction of investments. As consumption increases continually, generation and grid excess capacities are decreasing which leads to a declining security of supply. Various publications stress the importance of upgrading grid infrastructure and construction of new large-scale power plants. Still, if this path provides an optimal supply structure remains an open issue. Hence, the main objective of this project is to evaluate how electricity-specific energy services can be provided optimally from a society’s point of view with least total costs.