The article present results of economic efficiency evaluation of storage technology for electricity from coal power plants in large-scale chemical batteries. The benefits of using a chemical lithium-ion battery in a public power plant based on hard coal were determined on the basis of data for 2018 concerning the mining process. The analysis included the potential effects of using a 400 MWh battery to optimize the operation of 350 MW power units in a coal power plant. The research team estimated financial benefits resulting from the reduction of peak loads and the work of individual power units in the optimal load range. The calculations included benefits resulting from the reduction of fuel consumption (coal and heavy fuel oil – mazout) as well as from the reduction of expenses on CO2 emission allowances.
The evaluation of the economic efficiency was enabled by a model created to calculate the NPV and IRR ratios. The research also included a sensitivity analysis which took identified risk factors associated with changes in the calculation assumptions adopted in the analysis into account. The evaluation showed that the use of large-scale chemical batteries to optimize the operation of power units of the subject coal power plant is profitable. A conducted sensitivity analysis of the economic efficiency showed that the efficiency of the battery and the costs of its construction have the greatest impact on the economic efficiency of the technology of producing electricity in a coal power plant with the use of a chemical battery. Other variables affecting the result of economic efficiency are the factors related to battery durability and fuels: battery life cycle, prices of fuels, prices of CO2 emission allowances and decrease of the battery capacity during its lifetime.
The article reveals the problems of the formation and implementation of Ukraine’s energy policy
from the beginning of its independence to the present day. The specificities of the fuel and energy
sector of the country’s economy, the main stages of formation, macroeconomic conditions and the
problems of its transformation were analyzed. The slow and contradictory processes of reforming
Ukraine’s fuel and energy complex throughout the period of its independence and the fact that the
inconsistency with the main directions of the economic policy did not ensure its effective transformation
have been proven. The results of the OECD assessment of progress towards the main
objectives implementation of the Ukraine’s Energy Strategy have been presented. It was noted that
the results of the research suggest that the progress in achieving the goals of Ukraine’s Energy Strategy
is ambiguous, therefore the strategy needs to be refined accordingly. There are two main factors
moving away from the formal and declarative nature of Ukraine’s energy policy to its realistic model.
Firstly – an international factor associated with Ukraine’s extending involvement in international cooperation
within the energy sector, Ukraine’s international commitments to reform the energy sector
towards increasing energy efficiency, green energy, etc. Another – the crisis factor – as a result of the
energy policy of the Russian Federation. It was noted that the role of these factors in the future will
remain determining. The need to improve Ukraine’s energy policy, taking the current trends in the
development of the world energy system, new challenges and threats to politico-military and energy
confrontation with the Russian Federation into account, has been proven.
Taking debates on the historiography of Quebec as the base of his considerations, the Author presents various reflections and postulates concerning comparative historiography. In particular His attention is drawn to the various types and aspects of historical identity. The awareness of those is necessary for the correct comparative analysis.