TY - JOUR N2 - Energy is a basic industry for any economy and ensures the country’s security, including economic security. The purpose of the article is to analyze the reform of the energy sector in Ukraine for successful integration into the energy sector of the European Union. The state of the energy industry from 2003 to 2018 is analyzed. The following main reasons for the decrease in electricity generation in Ukraine are identified – a decrease in production volumes, the annexation of Crimea and the anti-terrorist operation in the east of Ukraine, a decrease in the volume of energy output from Thermal Power Plants due to aging capacities, difficulties with raw materials, low efficiency, which, however, has a good effect on the environment due to a decrease carbon dioxide emissions. The directions of reforming the electric power industry of Ukraine are considered in the context of “industry-market-company”. Four electricity market models are analyzed and the new model of the competitor’s market for electricity in Ukraine with contract market, spot market, the balancing market is substantiated. The structure of the segments of the new electricity market and the participants are proposed. More than half of the electricity market is provided by nuclear power, which ranks the 5th in the world in terms of installed capacity. The analysis of the performance indicators of the nuclear company for 2007–2019 showed significant reserves for the company’s growth, which are being successfully implemented through strategic development projects and phased corporatization of the company as a tool of unbundling. The main challenges of implementation a new market model are analyzed and solutions are proposed. L1 - http://www.czasopisma.pan.pl/Content/119085/PDF-MASTER/07-03-Doroshuk.pdf L2 - http://www.czasopisma.pan.pl/Content/119085 PY - 2020 IS - No 4 EP - 122 KW - electricity market model KW - liberalization of electricity market KW - corporatization of energy companies KW - unbundling A1 - Doroshuk, Hanna PB - Instytut Gospodarki Surowcami Mineralnymi i Energią PAN VL - vol. 23 DA - 2020.12.30 T1 - Reform of the electricity sector in Ukraine – liberalization of the market and corporatization of companies SP - 105 UR - http://www.czasopisma.pan.pl/dlibra/publication/edition/119085 T2 - Polityka Energetyczna - Energy Policy Journal ER -