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This study delves into the voltage stability of electric power systems under the significant influence of photovoltaic (PV) integration, emphasizing the analysis through the Voltage Collapse Proximity Indicator (VCPI) value. As the integration of solar energy sources into the grid escalates, comprehending their impact on system voltage stability becomes imperative. Utilizing sophisticated simulation models, this research assesses various PV integration levels to observe their effects on the network's voltage profile and stability margins. The VCPI, a critical tool in this analysis, quantifies the proximity to voltage collapse, offering a clear indicator of system resilience. Findings underscore the challenges and strategic solutions necessary for voltage stability management, highlighting the crucial role of adaptive control strategies and infrastructural advancements. This investigation offers indispensable insights for stakeholders in the energy sector, promoting the sustainable incorporation of PV systems into power grids with assured operational stability.