The paper is devoted to the problems of power supply to the off-grid settlements in the Irkutsk region. These settlements are not connected to the grid due to their remoteness and inaccessibility. Their population is 9.8 thousand people. The main problem for these localities is a complicated scheme of diesel fuel delivery, which is the reason for the high fuel input in electricity price. In this regard, economically feasible electricity tariffs currently reach 32-37 rub/kWh. In 2018, 486 million rubles was earmarked from the regional budget to subsidize power supply companies.
The connection of these consumers to the grid would considerably reduce budgetary subsidies. This measure can be taken in many districts. However, the switch to the centralized power supply requires significant investment due to the long distances between the points of possible connection and the settlements, and small electrical loads.
The Katangsky District has all preconditions for the replacement of diesel fuel with crude oil, given the location of the oil companies. Moreover, partial replacement by oil is possible in the Yerbogachen settlement even at some operating units. One of the alternative fuel options for autonomous power plants in the Kirensky and Ust-Kutsky Districts may be natural gas, owing to the Power of Siberia pipeline passing through this territory.
The real reduction in the fuel costs can be achieved by the construction of solar power plants in addition to diesel ones to substitute part of the fuel. In the context of the Irkutsk region, a possible reduction in diesel fuel consumption due to the use of solar energy can reach 40-45%. In the Kirensky District, there are prerequisites for using sawmill and woodworking waste to produce electricity.
All of these directions will significantly reduce the fuel cost and the budgetary subsidies for electricity supply to this category of consumers.
|Affiliation of speaker||Melentiev Energy Systems Institute SB RAS, Russia, Irkutsk|
|Position of speaker||head of laboratory|