Abstract
The stability of electricity service mainly depends on two main factors. One of them is the country’s power plant capacity and electricity imports. Another factor is the network that delivers electricity to consumers. Recently, consumer electricity production has appeared as a third factor due to the spread of renewable energies. The article focuses on the transformation of the structure of Hungary’s electricity sources between 2010 and 2020. We used the concentration indicator to examine the structure of export−import deliveries with neighboring countries. We also analyzed the centralization of Hungary’s electricity-generating units and the composition of their fuels. In this article, we examined the increasingly widespread renewable energies, which are replacing the traditional—mainly fossil fuel—energy carriers. The relationship between coal, natural gas, nuclear, solar, wind, water, and bioenergy, as well as net imports, were analyzed using a Pearson correlation matrix. This article concludes that renewable energies will cause further transformation in the future, both in the structure of export−import and power plants. In electricity imports, green power is increasingly preferred. Electricity from renewable sources will account for an increasing share of electricity production. In the future, electricity production based on non-renewables will move toward power plants with low carbon dioxide emissions. On the other hand, it is also moving in the direction of fast-reacting power plants due to weather-dependent renewables. Annual system load peaks will continue to increase year after year in the future, thereby posing additional challenges to electricity generation and the electricity grid.