The use of renewable resources has been on the rise in recent years. The use of renewable resources is also related to state support, either in the form of a fixed price for the purchase of energy or in the form of direct investment aid. The present article analyzed the use of RES in the Czech Republic and the number of installations depending on state support, which represents a significant factor affecting the end user. The article presented the development of the legislative framework that formed the basis of RES support during the years since independence and the country’s entry into the EU. The breaking points of support, when support was increased, and the impact of this support on the number of new installations were indicated. The development of energy production from RES was analyzed on the basis of historical data. A numerical model using a neural network was developed to illustrate the impact of government measures. The time interval for training the network was chosen on the basis of legislative changes, while the possible course was monitored if the change did not occur, or if the support remained the same. The results of the numerical simulation point to the fact that without adequate legislation and state support, there would probably not be an expansion of the use of RES. On the other hand, if the initial high support were to remain, there would probably be a significant distortion of the energy market. Finally, a prediction for the near future was presented, while a stabilization of the situation was assumed.

Hydrogen was established as one of the main pillars of energy stability in the Europe Union. One of the ways how to achieve this goal is natural gas enriched with hydrogen. Due to this is very important to know the properties of this fuel and its behaviour during combustion. The main scope of the research is to provide a better understanding of the emissions, efficiency, and performance of the heat source when combusting hydrogen and gas fuel mixture. In this paper is described hydrogen characteristics, hydrogen fuel preparation, an overview of gas fuel combustion in gas appliances with the hydrogen additive, a mathematical model for the combustion process estimation. In the conclusion, multiple predictive models were compared. We can state that, based on calculations of a numerical predictive model, as hydrogen concentration raised emissions, as nitrogen, carbon dioxide, wet exhaust, and water, are decreasing.

Slovak Republic is a member of the European Union and is a part of the European energy market. Although Slovakia contributes only marginally to global emissions, there is an effort to meet obligations from the Paris climate agreement to reduce greenhouse gases. As in many countries, power industry emissions dominate Slovakia’s emissions output but are partly affected and lowered by the share of nuclear energy. The transition from fossil fuels to renewables is supported by the government, and practical steps have been taken to promote the wide use of renewable resources, such as biomass or solar energy. Another step in this transition process is the support of new technologies that use hydrogen as the primary energy source. The European Union widely supports this effort and is looking for possible sources for hydrogen generation. One of the main renewable resources is hydropower, which is already used in the Slovak Republic. This article presents the current situation of the energy market in Slovakia and possible developments for future hydrogen generation.