Use of a photovoltaic power system for supplying the auxiliary power needs of a hydroelectric power plant: a case study of the Bozsuv Hydroelectric Power Plant
Received: 2026-07-02 15:51:41
Published: 2026-07-02
Abstract
The feasibility of using solar photovoltaic installations to power the auxiliary systems of hydroelectric power plants is based on the assessment of economic efficiency, the indicator of which is the ratio between the required capital investments and the achieved technical and economic effect. The issue of assessing economic efficiency is a rather complex task, since it is necessary to take into account a large number of factors, such as specific features of design solutions, operating modes of auxiliary systems, operating conditions of solar installations and others. The purpose of this study is to substantiate the possibility of using solar photovoltaic installations to power the auxiliary system of a hydroelectric power plant based on an assessment of their economic efficiency. The following methods were used in the research: review, generalization of existing literature on this issue, their system analysis, collection of data on various types of power plants, calculation of their economic efficiency. The results of the study for the conditions of the Bozsu HPP indicate the feasibility of using a solar installation to power the station's auxiliary needs if it operates in a power system based on thermal power plants. In this case, the efficiency is 1.5-2 times higher than for a hydroelectric power plant operating in an autonomous mode.
To analyze the auxiliary power supply system of a hydropower plant and to develop a methodology for assessing the efficiency of solar installations to improve energy, economic, and environmental performance.
The research methodology is based on a combination of theoretical and empirical methods, including the analysis of literature, regulatory documents, and the generalization of information.
The 300 kW solar power plant project fully covers the hydropower plant’s internal needs, provides an annual economic benefit of \$25,000–28,000 with a payback period of 7.5–8.3 years, and enhances energy efficiency, independence, and environmental sustainability.
Overall, the integration of solar generation into the auxiliary power system of a hydropower plant is an effective modernization approach that ensures reliable energy supply, enhances operational stability, and meets modern requirements for energy efficiency and environmental sustainabilitys.
Keywords
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