Energy Conservation through Lighting Audit and Automated Control Strategies for a Higher Educational Institute

Abstract

Energy is essential for day-to-day life activities. Efficient use of energy is crucial for reducing energy costs, resource conservation, and minimizing environmental impact.  Lighting systems account for a significant portion of energy consumption in commercial and educational buildings, creating the need for systematic evaluation and optimisation through a lighting audit as a part of an energy audit. This paper presents a review and case study of a lighting audit conducted in a higher educational institute in Gujarat, India. The study gives a review of existing literature on lighting audit methodologies and energy conservation measures such as daylight harvesting, LED retrofitting, and smart lighting controls. Measurements of illuminance were carried out at key locations, including corridors, faculty passages, lavatories, library spaces and lecture halls during different time intervals under both natural lighting and artificial lighting conditions. The measured values were compared with standard recommended illuminance levels to assess the adequacy and efficiency of the existing lighting system. The analysis reveals over-illumination in corridors and passages, as well as under-illumination in lavatories. Based on the findings, suitable energy-efficient solutions such as occupancy-based lighting control, daylight sensor integration, dimmable LED retrofitting, and optimized lighting design are proposed. The results demonstrate significant potential for energy savings through intelligent lighting management without compromising visual comfort. This work provides valuable key points for improving energy efficiency in lighting systems and sustainability in institutional buildings, through the case study.

Received: 14 March 2026  │  Accepted: 10 July 2026  │  Published: 23 July 2026