Photovoltaic Power System with Electrochemical and Hydrogen Storage for Energy Independence in Student Dormitories

Tomasz Trawiński () and Janusz Kotowicz
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Tomasz Trawiński: Department of Mechatronics, Silesian University of Technology, Akademicka St. 10A, 44-100 Gliwice, Poland
Janusz Kotowicz: Department of Power Engineering and Turbomachinery, Silesian University of Technology, Konarskiego St. 18, 44-100 Gliwice, Poland

Energies, 2025, vol. 18, issue 7, 1-19

Abstract: This article analyzes the path towards achieving electric energy independence for dormitories. It examines electricity consumption in dormitories to determine the necessary volume for daily electrochemical energy storage systems, seasonal hydrogen storage system capacity, and photovoltaic (PV) system power. Electricity consumption data from dormitories between 2021 and 2024 were analyzed, showing hourly, daily, and monthly trends. The study developed a mathematical model of hourly electric energy usage and production in Matlab/Simulink to optimize the photovoltaic (PV) system, increase self-consumption potential, and enhance surplus energy storage. This enabled the selection of capacities for daily and seasonal storage, along with PV system power to meet dormitory energy needs, particularly in autumn and winter. The software accommodates monthly energy consumption profiles and PV system characteristics, allowing for the estimation of electric energy surplus after usage by inhabitants for hydrogen production and storage. The study offers a comprehensive framework for sustainable electric energy management in student housing.

Keywords: energy storage; electrochemical storage; hydrogen storage; photovoltaic systems; self-consumption (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2025
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