IMPROVING THE ENVIRONMENTAL AND ECONOMIC PERFORMANCE OF GRID POWER PLANTS FOR INDUSTRIAL EN- TERPRISES IN AUTONOMOUS OPERATION MODE

• Date: 2025
• Main Author: Stepenko , V.
• Format: Article
• Language: Ukrainian
• Published: Institute of Renewable Energy National Academy of Sciences of Ukraine 2025
• Subjects: hybrid energy system; grid-tied inverter; islanded operation; gas generator; photovoltaic plant; energy autonomy; backup power.
• Online Access: https://ve.org.ua/index.php/journal/article/view/546
• Journal Title: Vidnovluvana energetika

In light of current energy-security challenges faced by enterprises—especially under conditions of unstable grid supply—the demand for efficient autonomous solutions based on renewable energy sources is growing. This study investigates ways to improve the eco-economic performance of grid-connected solar power plants by integrating gas-fueled generators with modern inverter systems. The paper examines innovative grid-tied inverters (using Deye models as a case study) that can operate in a “generator mode,” thereby emulating grid presence and ensuring uninterrupted operation of the photovoltaic (PV) plant. The objective is to conduct a techno-economic and environmental assessment of replacing diesel gensets with gas-powered generators in such systems. We describe the fundamental operating principles of the inverter-generator link, the specifics of integration into existing infrastructure, and the resulting impacts on operating costs and CO₂ emissions. Energy-scenario modelling is performed for enterprises that require highly reliable power supply. The analysis substantiates the benefits of deploying these configurations for achieving energy autonomy, reducing operating expenditures, and lowering environmental footprints. The study highlights the need for further research aimed at optimizing hybrid-system configurations and for policy measures that encourage a transition to cleaner forms of backup power.