The article is about the role of renewable energy objects such as pumped storage power plants (PSPP) within energy systems and their status on energy markets in Russian Federation and abroad. Problems and weakness of acting methods of tariff estimation are measured; the necessity of changings in tariff policy is emphasized. Article describes results of approbation of methodology for estimating of tariff bonuses, which are proved by the system impact of PSPP in regimes for maintenance of system reliability. Significant improvement of the investment attractiveness of PSPP from bonuses for system efficiency is shown.

The research paper presents theoretical and practical aspects of differentiation of territories according to the level of transport infrastructure development. The purpose of the research is to develop a formalized approach to territorial differentiation according to the level of transport infrastructure development on the example of Ukrainian regions. The issues with the term of "transport infrastructure" are defined. Classical methodological approaches to transport infrastructure level of development assessment are described. The essence of the concept of "differentiation" and its meaning in the transport industry are revealed. The coefficients for assessing the provision of regions with transport infrastructure, transport network density coefficient and the assessment of transport network safety indicator are considered. On the basis of the considered coefficients and initial statistical data, the analysis of regions of Ukraine, based on a level of development of a transport infrastructure, was conducted. The inequality of transport infrastructure level of development (even within one country) is caused due to both objective (geographical location, resource potential) and subjective reasons (efficient use of resources, effectiveness of regional management). An integrated assessment in order to solve this task was formed. It is based on the apparatus of the methodology of decision-making in conditions of uncertainty. For the practical demonstration, the regions of Ukraine were differentiated, according to the level of transport infrastructure development. During the evaluation, it is possible to determine the factor with the greatest impact on the overall result by region. Improving the quantitative indicators that form the most influential qualitative assessment would lead to an increasement of the overall assessment. Thus, using the developed algorithm, it becomes possible to optimize the management of transport infrastructure development of a particular territory.