Today, the average weightedprices for electricity for other consumers in Russia are on average 30% higher than for the population, which contradicts economic principles of formation of corresponding prices [Zolotova I.Yu., 2017; Linder N.V., Trachuk A.V, 2017]. Other consumers (mainly large industrial enterprises) bear an additional tariff burden, paying a part of cost of electricity supplied to the population (the mechanism of cross- section subsidizing ") [Trachuk A.V., Linder N. V., Zubakin VAetal., 2017].

Since 2004, the volume of cross-section subsidizing between consumer groups has quadrupled (from 69 billion RUR to 283 billion RUR without VAT), there have been periods of slowing/decreasing growth rates of cross- section subsidizing and a significant increase in the corresponding volumes (figure 1):

To reduce the amount of cross-section subsidizing, it is necessary that retail (final!) prices for electricity for the population grew at a faster pace compared to prices for other consumers.

Starting in 2017, the forecast for socio-economic development, prepared by the Ministry of Economic Development of Russia for three years, includes parameters that reflect the prospective growth of tariffs for electricity for the population and for other consumers, rates of changes in utilities fees for citizens. Indicators of forecast changes in final prices for electricity for the population are excluded from the forecast.

The forecast provides for the anticipated growth rate (by 2 p.) of network tariffs for electricity for the population in comparison to network tariffs for other consumers starting from 2017. Thus, the target vector aimed at eliminating (reducing) cross- section subsidizing has been set set [Forecast of socio-economic development].

Taking into account the peculiarities of pricing for the population1 [Forecast, [n/y]], the indicated forecast parameters can not be achieved. An additional obstacle is the restriction on the rate of growth of citizens' utilities fees (no more than 4%), which is an indicator for the limitative indexation of the final tariff for the population. The increase in prices in the wholesale electricity (capacity) market exceeds the inflation rate (in connection with implementation of capacity contracts), which means that the increase of the network tariff for the population in fact may be lower than not only the parameters indicated in the forecast, but below a benchmark of 4%. In 2016, with the same parameters of increase in the network tariff for the population and other consumers (in accordance with the forecast of 7.5%), growth rates of retail electricity prices for other consumers were higher than those ones for the population [Association, [n/y]].

In order to ensure transparency in solving problems of reducing cross-section subsidizing (taking into account the pricing of electricity for the population), it is necessary to include the indicator "growth of regulated (final) tariffs for the population" into the forecast (as was until 2017), providing for anticipating growth rates in comparison to other consumers [Dolmatov LA., Zolotova I. Yu., Maskaev I. V., 2017].

In addition to differentiating rates of tariff changes for the considered groups of consumers, the dynamics of cross-section subsidizing volumes is also affected by the difference in growth rates of electricity consumption for the population and other consumer groups. According to estimates of the Ministry of Energy of Russia and a number of experts (see, for example: [Trachuk A. V., 2010; Sellyakhova O., 2012; Volodm Yu. V., Linder N. V., 2017; Trachuk A. V., Linder N. V., 2017]), the trends of recent years characterized by exceeding the growth rates of electricity consumption by the population in comparison with other consumers (Figure 2), will remain in the coming years, which, other things being equal, will lead to an increase in cross- section subsidizing in perspective (fig. 3 shows the invariability of tariffs for electricity for the population, the annual increase in electricity consumption is 1.5%).

Considering the problem of cross-section subsidizing, it is necessary to take into account the current level of retail electricity prices for industrial enterprises (which bear the burden of cross- section subsidizing today), the maximum permissible level of price increases for these consumers (especially for large energyintensive consumers, for which the price of electricity is an essential factor, affecting the competitiveness of products). Retail electricity prices for similar consumers in Europe can act as a standard of such a limit (Figure 4).

As the analysis of electricity prices for the industrial sector showed in countries with a similar structure of household and industrial electricity consumption (Belgium, Germany, Finland, Romania), it is possible to increase electricity prices for industry in Russia by no more than 1.4 times from the level of 2016, or up to 4.2 RUR/KW/h (at the same time, the growth potential of tariffs for the population is significant, the actual tariff for electricity for the population in 2016 was 2.4 RUR/kWh without VAT, for other consumers -3.1 RUR/kWh) [Eurostat, [n/y]].

So, the current level of cross-section subsidizing in Russia as a whole is conditionally permissible from the point of view of the tariff burden of industrial consumers. In a number of constituent entities of the Russian Federation, the current tariffs for electricity for industrial consumers are close to or exceed the limit level of 4.2 RUR/kW/h (for example, the Republic of Altai, Kostroma Region, Arkhangelsk Region), and further increase of price for this group of consumers (including the one in connection with the burden of cross-section subsidizing) can lead to the fact that large consumers will switch to alternative sources of power supply or reduce production volumes, their competitive positions and financial stability will decrease (see, for example: [Khovalova T.V., 2017; Trachuk A. V., 2011a, b; Ryapm I., 2013].).

While maintaining the current practice of including these volumes in electricity prices for other consumers, further growth of cross-section subsidizing in the power engineering industry will lead to a significant increase in the tariff burden for industrial enterprises in the long term (for the latter, the price level may exceed analogous indicators of European countries in most regions of Russia by 2026 under other equal conditions).

The calculation of the amount of cross-section subsidizing essentially depends on how to determine the economically justified price for certain categories of consumers. Even if prices for actual payments for electricity and related services are unchanged, a change in legislation regulating the calculation of an economically justified price may lead to an increase or decrease in cross-section subsidizing (for example, if the number of voltage levels or the number of hours of use of capacity for different tariff groups changes).

It is objectively impossible to determine costs of the industry related to supply of electricity to each particular consumer (except for cases of autonomous power supply) unambiguously and reliably. In the general power system, almost all equipment is involved in power supply to the entire aggregate of consumers simultaneously. The power system itself is designed on the principle of minimizing total costs of all users (not only electric, but also thermal energy) [Dolmatov I., Zolotova I., 2015]. Thus, it is impossible to determine the composition of equipment (and, consequentially, costs) justified from the standpoint of power supply to a particular consumer. If you try to take simulation for a certain category (group) of consumers, there inevitably arises the problem of justifying a certain classification of consumers (for example, what are the objective differences in the amount of infrastructure necessary to supply a household and a small store? Based on what does the regulator make no pricing distinction for households located at a great distance from each other and at different distances from the generating facility within the same subject of the Russian Federation? etc.).

Due to features of calculation described above, there are various estimates of the amount of cross-section subsidizing in the power engineering industry (from 220 to 400 billion RUR).

The solution to the problem of cross-section subsidizing turns out to depend on improving the methodological base. Digitalization of management processes and optimization of operations in the electricity (capacity) markets provide opportunities for detailed pricing and consideration of specific power supply conditions (capacity reservation, reliability category accounting, individualization of the tariff menu of retail consumers) [Trachuk A. V., Linder N. V., 2018; Dzyuba A.R, Solovieva TA., 2018]. This circumstance can significantly affect the methodology for calculating cross-section subsidizing and its magnitude. Thus, it is necessary to update the relevant estimates of the amount of cross-section subsidizing taking into account various initiatives to introduce changes in the methodology for calculating tariffs.

When determining the forecasted dynamics of reducing cross- section subsidizing, it is necessary that the following conditions are fulfilled simultaneously:

Fig. 5 presents the forecast of retail electricity prices for the population, other consumers and cross-section subsidizing volumes formed taking into account following scenarios:

The contribution of the increase in tariffs for electricity for the population of 6% to the consumer price index will be 0.075 p., that is, it will not have a significant inflationary pressure.

Given the scenarios for calculations until 2025, electricity prices for households and other consumers will converge, starting from 2025, tariffs for the population will exceed the levels of retail electricity prices for other consumers; by 2028 the amount of cross-section subsidizing will be reduced to 234 billion RUR (by 49 billion RUR for 10 years)

In the object electricity pricing simulation, the cross-section subsidizing mechanism shall be completely excluded (the amount of cross-subsidization is reduced to zero): the average level of tariffs for electricity for the population should cover real costs of production, transmission and distribution of energy to this group of consumers. To support indigent citizens, it is necessary to use the targeted support mechanism, including a support tool for paying for utilities provided for by the current legislation.

As model calculations show, a significant reduction in the amount of cross-section subsidizing can be achieved by 2036 under considered scenarios and fulfillment of these conditions (Figure 6).

In accordance with regulatory legal acts, a phased reduction in the amount of cross-section subsidizing to an optimal level equal to subsidizing the most indigent households is envisaged by 2022 (in 2012, prices make about 45-50 billion RUR for about 30% of households) [Order as of 2013]. In considered scenarios, this level can be reached no earlier than 2032. To achieve these objectives, it is necessary that annual tariffs for electricity for the population increase more intensively (a increased of at least 10% per year).

CONCLUSIONS