Abstract
Construction of new power lines is a complicated and long-term formal and legal process. The duration of the investments is extended by trade arrangements, public consultations in order to delimit line corridor, time required to obtain necessary decisions, permits, analyses and opinions necessary to implement an enterprise. The main goal of this article was to present analyses of variants of possibility of rebuilding of a power network in the aspect of increasing transmission potential of existing 110 kV lines, taking technical and financial aspects into account.