The expediency of studying the varying potential of wind and solar energy in the northern strip of the Ukrainian Carpathians is substantiated. The technique of conducting experiments to determine the natural potential of wind and solar energy is proposed and a model for determining the relative volumes of electricity generation by wind farms and solar electrical installations is developed. Based on the conducted research, according to the Drohobych meteorological station, an energy assessment of wind and solar energy resources in the northern strip of the Ukrainian Carpathians was performed. It is substantiated that the theoretical curves of distribution of wind velocity in separate quarters of the year in the territory of the northern strip of the Ukrainian Carpathians are described by the Weibull distributions. Based on the calculations, it is established that the highest total daily solar radiation is in the summer months. Daily graphs of the relative generation of electricity by wind farms and solar electric installations have been constructed. The expediency of formation of combined systems of energy supply of objects from wind and solar energy in the northern strip of the Ukrainian Carpathians has been established. The substantiated patterns of change in the natural potential of wind and solar energy, as well as the graphs of the relative generation of electricity from them, will significantly speed up managerial decisions and improve their quality.

Over the last few years, hydrogen energy has shifted from a little-studied field to the main one with which leading western countries associate the prospects of their national economies. The reasons are the unprecedented pace of development of hydrogen technologies. It turned out that they are able to provide significant reductions in greenhouse gas emissions, and thus bring closer the solution to the problem of global climate change. The first and foremost purpose of our investigation is to reveal that our country has ample opportunities to become the main supplier of hydrogen to the EU market, overtaking North Africa in the competition. Using the methods, authors studied the targets of the European funds towards development of energy production from biohydrogen, studied the potential for the implementation of hydrogen projects, possibilities of financing them and a potential ability of Ukraine to form internal and external markets for hydrogen energy. One of the main issues of Ukraine's possible participation in Europe's hydrogen energy program as a supplier and producer of renewable hydrogen is the possibility of its technically safe and cost-effective transportation to EU countries. As a conclusion to the authors’ research, the path of the hydrogen industry development in Ukraine will help to receive additional investments in the Ukrainian economy for creation of new capacities for "green" hydrogen production. In return, Europe will receive research and evolution of the bioenergy component of the economy, which will permit the safe transition of Europeans to an affordable, competitive, and stable energy system.

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Climate change, which is observed on our planet at an unprecedented rate over the past decades or even millennia, is one of the most influential risks that determine the global development of mankind. Changes in the climate system pose serious threats and challenges to the sustainable development of society, caused by increased risks to human health and life, natural ecosystems, economic sectors and require detailed research and development of adaptation measures. Waste is one of the biggest problems of mankind today. Waste accompanies a person at every stage of his activity and requires a close approach to the issue of their disposalburial at special landfills. This solution is not optimal, because it requires the annual alienation of land for the expansion of landfills and construction, and investments in these landfills, which must meet all technical and hygienic requirements. However, even landfills that meet all the established requirements cannot guarantee environmental safety. The landfill for waste disposal is a kind of biogas generator (landfill biogas), which is formed as a result of the decomposition of the organic waste fraction. This work is devoted to the analysis of modern designs for the collection and removal of landfill biogas, mathematical models for assessing the level of methane formation of solid waste landfills, the potential and prospects for the development of biogas power plants to reduce greenhouse gas emissions. A rational solution to these problems is the use of renewable energy sources, including biogas, the gas emitted by production and consumption waste in landfills of such waste. A prospective analysis of the volume of biogas was carried out on the example of a landfill for municipal solid waste in the city of Kamianets-Podilskyi, Khmelnytsky region (Ukraine).