The methodology for the calculation network use tariffs in Slovenia

The liberalisation of the electricity market in Slovenia in 2001 has brought many challenges to electric power system. The electricity market after July 2004 is 75% open with only household consumption as non-eligible customers. Design of the market in accordance with EU Directive 96/92 has opened new relations between players. The price of electricity is generally composed by price for energy and use of system charge. Particular attention was paid to network use charges, which essentially determine the overall electricity price. The paper is focused to the method for calculation of transmission and distribution use of network charges and its impacts on overall electricity price in the first regulatory period. In the Slovenian system there are one Transmission system operator and five Distribution regional network operators. Energy Agency as Slovenian Regulator supervises use-of-system charges with the aim to keep transparent electricity market relations and reliable system operation.