Globalization and digitalization are no longer future topics, they are present issues. The increasing number of international projects due to new policy guidelines, the geographical location and strategic corporate positioning brings Austria and the APG, the Austrian transmission system operator (TSO) in a key role in the European electricity grid. Especially control area border cooperation for the procurement of control power is an important issue. Renewable energy is considered to contribute to an environmentally benign electricity supply. They have some impact on price structures for balancing energy and control power. These price structures are quite different between Austria and Czech Republic. The object of this master thesis is to analyze the cost-saving potential of cooperation between transmission system operators from Austria and the Czech Republic. The analysis is based on the experience of the two existing cooperation with Slovenia INC - Imbalance Netting Cooperation and Germany IGCC - International Grid Control Cooperation. Their values are shown, compared and critically considered. The aim of this thesis is an economic analysis to proposed further cooperation. The method of a TSO-TSO model and the Settlement model are using to calculate the cost savings potential. The data source consists of more than 140,000 records of quarter hour consumption figures from 2015 regarding to the respective countries. In the last three years APG was able to achieve about 100 million euros savings with the two existing -Imbalance netting- collaborations. According to reports, further collaborations involving the APG are planned. A cooperation between the Czech TSO and the Austrian TSO would bring about 3 million euros per year respectively for each transmission system operator to cost reduction. An implementation of this cooperation is planned in the coming years.