Prospects for solar power plants in electricity supply systems in mines

The use of nonconventional sources of energy is one of the decarbonization policies in the industry sector of economy. The main problem of solar power plants is non-generation of energy in darkness hours, which prevents from using the solar power plants as a main supply source at factories with constant energy consumption. Mining involves implementation of many energy-intensive processes with intrinsic load patterns. The present studies aim at substantiation of solar generation technologies for mines without using energy storage units. With this end in view, an actual load pattern of a technological system of an open pit mine is analyzed, and feasibility of covering the daylight peak demand by a solar power plant is determined. The engineering designs concerned with the structure and equipment of a solar power plant are substantiated, and the equipment parameters are set. From the technical and economic assessment, the economic performance of a solar generation project at a mine is evaluated. The design analysis shows that a solar power plant replaces 41 million kilowatt hours annually in the general energy budget of a mine. The payback period of the project reaches 5 years. For another thing, the lower consumption in the day-time reduces the cost of power owing to different rates without regard obligatory coverage of the daylight peak demand of a consumer. The analytical estimations were carried out as a case-study of Lebedinsky Mining and Processing Plant (GOK).

Sofronov M. A., Petrov V. L. Prospects for solar power plants in electricity supply systems in mines. MIAB. Mining Inf. Anal. Bull. 2024;(10):152-165. [In Russ]. DOI: 10.25018/0236_1493_2024_10_0_152.

M.A. Sofronov¹, Magister, e-mail: sarychev_2000@inbox.ru,
V.L. Petrov¹, Dr. Sci. (Eng.), Professor, e-mail: petrovv@misis.ru,
¹ NUST MISIS, 119049, Moscow, Russia.

V.L. Petrov, e-mail: petrovv@misis.ru.

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