Thermal and electrical energy occupies a significant proportion in the finished product value; respectively, the desire to reduce the cost of produced and consumed energy encourages active engagement in the implementation of various innovations. Innovative development of power industry is one of the main priorities in the state policy of the developed countries.

This segment of power industry has existed since the early 20th century, when domestic energy was formed at large. In future, the choice was made in favor of large power plants, whose technical and economic characteristics were superior to the objects of low-power generation, and the electricity transmission systems appeared. The distributed energy objects actually existed only in the inaccessible places, where attaching of consumers to the centralized electrical networks was economically inexpedient. Energy sources for the distributed energy objects may be natural gas, coal, municipal solid waste, renewable energy sources (the sun, water, wind, etc.).

Distributed energy assumes that small up to 25 Mw power plants of consumers are included into the unified energy system or operate autonomously. Abroad other power limits are practiced ranging from I Mw in Italy to 100 Mw in Slovakia and Hungary [Bayod Rtijula A. A, 2005; Trachuk A.V., Lmder N.V., 2018]. To date, distributed energy is demanded in many areas: in the remote territory, housing and communal services, mobile consumers, as well as in the industries requiring special characteristics of the used energy, etc. Distributed energy includes the following technologies:

According to various estimates, in Russia the distributed energy share is about 5-7% [Hannes B., Abbott M., 2013; Distributed energy, 2015; Khovalova T.V., 2017]. The lack of fixed definitions and classifications results in the lack of statistical service of this kind of objects.

Nevertheless, the segment itself is growing, evidenced by the increased investment in the fixed capital of the facilities of the industrial block stations of consumers (fig. I), and at that more than the electric power industry as a whole.

According to General Electric company forecasts the worldwide introduction of new capacities by 42% will be provided by distributed energy to 2022 (fig. 2).

The world experience shows that the development of power systems based on distributed energy not only solves the trivial tasks of remote energy consumers, but also is one of the most relevant innovative directions. Through the use of new technologies, it can significantly improve the performance of the electric power complex [see, e.g.: Trachuk A.V., Linder N.V., Zubakm V.A. et al.,2017].

Abroad, distributed energy represents predominantly objects based on renewable energy sources (RES). According to Bloomberg New Energy Finance, by 2040 72% of investments in the new generation will account for the facility that uses sun and wind energy. Stimulating the development of RES technologies has led to the fact that by the cost of electricity such generation objects came up with traditional energy sources, in some circumstances, it became even less. In general, reducing the cost of electricity production on solar panels from 2009 to 2017 decreased by 67%, and on wind turbines — by 86% [Lazard’s levelized cost, 2017]. Perhaps by 2050 the world's energy system will 100% consist of renewable energy sources and at that the cost of the produced electricity will be cheaper than it is today [Energy watch group, 2017].

Such achievements in the field of RES were made possible thanks to the fact that many countries have policies that includes subsidies to the large-scale use of technologies through the establishment of special tariffs, tax credits and other mechanisms. The basic idea is to use the effects of training and investment in training, as well as reducing the cost of equipment and increasing the output volumes [Rubin E.S., 2015]. It also assumes the subsidization of expanded innovations until they become fully competitive in comparison with the traditional technologies.

Support for RES development in Russia began only in recent years. It was set the target volume of production and consumption of electric power with the use of renewable energy sources (excluding hydroelectric power stations with the installed power exceeding 25 Mw) — 4,5% [Regulations, 2009].

Development of distributed energy in Russia is assigned in the regulations [Energy strategy, 2009; Draft of energy strategy, 2017]. It is defined the state support for the introduction of power generating facilities on the basis of RES [Regulations 2013; Regulations 2015; Plan 2017]. Adetailed analysis of these regulations has been held in a number of works [New scheme, 2013; Zhykharev A., 2017; Zubakm V. A., Kovshov N.M., 2015]. The subject of their research was the shortcomings of the practical embedding of implementation mechanisms for RES that remains outside the scope of this work.

Incentive mechanism of power production was embedded on the wholesale market of electric energy and power via power provision contracts (PPC) by the qualified generating objects, operating on the basis of the use of renewable energy sources [Regulations, 2013]. PPC are made to ensure the increased cost for electrical power for RES objects that allows achieving the payback of investment. The PPC mechanism fully operates on the wholesale market.

The main criteria in selecting projects are capital costs, load factor, which limiting value is established by the regulatory framework, the level of localization of the used equipment. Targets of RES object localization degree are presented in table I. As of November 2017 2452.06 Mw was selected from wind turbines (WT), 1704.2 MW from solar power plant (SPP), 120.2 Mw from small hydro power plants (HPP). The actual selection of projects RES and SPS almost completely covers the allocated quotas (by 91 and 97% respectively), while ElPP lag far behind: the proportion of the selected projects is 34%. In Fig I. information is provided for RES objects scheduled for commissioning and actually selected as of 2017.

It is expected that the deficit of commissioning of RES objects will be compensated through the implementation of two other incentive measures.

It is planned to install special higher tariffs for RES-based energy producers on the retail market to ensure the recoupment of projects over 15 years [Regulations, 2015].

To get these tariffs, the producer must meet the following conditions:

To date, within the framework of this mechanism no project was implemented.

An action plan for promoting the development of power generating facilities on the basis of renewable energy sources with the installed capacity of up to 15 kW implies the compulsory purchase of electricity from private microgeneration owners on the basis of RES by the ensuring suppliers and network companies. Individuals carrying out such operations shall be exempt from tax liabilities.

In Russia there are no domestic commercially successful technologies of production of million- kilowatt class wind-generator plants [Regulations, 2015]. Implementation of localization requirements for the used foreign equipment demanded the establishment of new industries. It is planned to build joint productions to manufacture the equipment for wind power plants. The founders will be:

Solar energy equipment needs to implement the scheduled ccommissioning for more than 80% are covered by the domestic company "Heveb (joint venture SC “Renova” and OJSC “Rosnano”). The only foreign player, who took part in the competition for the selection of RES projects, was LLC “Solar Systems” (the founder is the Chinese company Amur Sirius).

With regard to the equipment production for small hydropower industry, the small capacity hydraulic turbines are produced by JSC «MIES», JSC «Nord Gicko ", PJSC Silovye mashrny, OJSC "TMZ", JSC "Tyazhmash", JSC "Inset". The more surprising is the low level of investor interest in the construction of power plants. The scheduled commissioning of RES objects look quite realistic in view of the fact that there are domestic producers of the appropriate equipment and it is planned to open the new ones.

However the chosen way of promoting RES implementation can lead to a number of negative consequences from the point of view of innovative development of domestic technology for the following reasons:

Domestic technologies of distributed generation based on natural resources are quite competitive as compared with foreign counterparts. But in this segment import prevails, in various directions it reaches 80% [Regulations, 2015], which also makes up the urgent task to stimulate domestic producers.

For the development of distributed energy and power industry as a whole, it will be important to create intelligent networks (smart - grid). Their technologies allow to combine various technologies of energy generation and accumulation, provide the increased reliability and security of energy supply, provide for consumers — owners of their own means of generating and accumulation — opportunities to implement the surplus power produced by own sources of generation, to manage the demand for electricity and, as a consequence, they optimize the electrical loads and can reduce the need for new facilities that is absent so far.

Forecast of electric power industry development up to 2040 suggests that the main trend in the global power industry will be the aggregate of the following technological breakthroughs:

Thus, the promotion of integrated projects, involving the combination of different RES technologies and traditional generation objects, connected by intellectual networks, will not only improve the efficiency of power grids, but also provide the development of domestic equipment manufacturers for various segments of distributed energy.

Analysis of stimulating of enhanced embedding of RES obj ects in Russia showed that there are a number of challenges and barriers to the innovative development of domestic technologies of distributed energy. In our opinion, to overcome this the existing mechanisms should be supplemented by the following measures: