Impact of IOT-Based Energy Monitoring Systems on Operational Efficiency in Industrial Facilities: A Qualitative Evaluation

Abstract

This study examined the impact of IoT-based energy monitoring systems on operational efficiency in industrial facilities using a quantitative quasi-experimental and longitudinal design. The research analyzed data collected from 12 industrial facilities and 48 production units over a 12-month period, comparing pre-implementation and post-implementation performance indicators. Key variables included energy consumption, production output, equipment utilization, and downtime frequency. The findings revealed a significant reduction in average energy consumption from 15,300 kWh to 13,200 kWh, representing a decrease of approximately 13.7%. At the same time, production output increased from 8,450 units to 9,720 units, reflecting a growth of 15.0%. Equipment utilization improved from 68.5% to 79.2%, while downtime frequency declined from 14.3 hours to 8.7 hours per month, indicating a reduction of nearly 39%. Statistical analysis confirmed that these improvements were significant, with strong effect sizes observed across all variables. Regression results showed that IoT-related factors, including data frequency and system integration, accounted for over 60% of the variance in operational efficiency outcomes. Facilities with higher system integration demonstrated greater improvements, achieving up to 18.6% energy reduction and 19.8% production increase. Time-series analysis further indicated that efficiency gains were gradual and sustained rather than immediate, reflecting stable performance improvements over the study period. The results demonstrated that IoT-based energy monitoring systems contributed to enhanced operational efficiency by improving real-time visibility, enabling faster decision-making, and optimizing resource utilization. Variations across sub-groups highlighted the influence of contextual factors such as production scale and energy intensity, with high-energy-consuming processes showing greater efficiency gains. Overall, the study provided robust quantitative evidence that IoT-based monitoring systems significantly improved industrial performance and operational stability across multiple facilities.