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There are the results of the electrical energy consumption research in a residential apartment building which is located in the Moscow region. Authors have given the information of the apartment electricity consumption with two people living. Research period is 2018 - 2022. Researchers have considered the main sources of electrical energy consumption in a typical apartment and in common property in this paper. It has been determinated the part of the considered apartment electrical energy consumption in the total consumption of electrical energy in an apartment building by authors of this paper. Researchers presented the information of the electric energy cost changes for the research period in the territory where were built considered building. It has been described the view and technical characteristics of the building by authors in this paper. There is the information of energy consumption in the cold, warm and transitional periods of the year. This work could be useful for companies which are in the field of managing common property, specialists from various areas of the municipal service complex, as well as developers who plan investments to residential construction in the Moscow region and other regions of the Russian Federation with similar climatic characteristics. This article is also could be used for the urban planning policy development in the field of providing electrical energy to settlements with a population less than 100 000 people. [ABSTRACT FROM AUTHOR]

While it is evident that photovoltaic installations are becoming more and more widespread globally, demand for them in the Russian market remains low. Considering recent changes in the legal framework, which are beneficial for households with renewable energy, it is crucial to evaluate photovoltaic installation's economic feasibility for the Russian context, which is evaluated in this article. First, the authors created an hourly electricity consumption profile for a typical Russian multifamily house. Then a PV installation was designed and scaled to reach annual net-zero balance and net-zero balance in July for different ways of installing PV modules. After that, a monthly energy balance, considering underproduction and overproduction of electrical energy, was calculated. Finally the costs of PV electricity were calculated including purchased equipment, costs for installation as well as cost for buying electricity not covered by the PV modules and sold electricity during hours of overproduction. The economical evaluation was performed assuming a 30 year lifetime for the PV installation. It is concluded in this paper that PV installations can be profitable in the Russian market. [ABSTRACT FROM AUTHOR]