Utilizing solar power to improve the efficiency of road lighting systems

Abstract

The road lighting system is an important technical infrastructure that ensures safety and security. However, using traditional light sources such as High-Pressure Sodium (HPS) lamps has revealed several limitations in terms of energy efficiency, operational costs, and greenhouse gas emissions, thereby impacting on the environment. This paper focuses on the application of solar-powered LED lighting systems (PV-LED) as a sustainable and efficient alternative for both urban areas and remote regions without access to the electrical grid. The study shows that over a 5-year lifecycle, a 50W PV-LED system can save more than 600 kWh of electricity compared to grid-powered 50W LED lighting. Moreover, PV-LED systems substantially cut greenhouse gas emissions, with total lifecycle emissions reduced by approximately 45% compared to conventional grid-powered LED lighting. Obviously, PV-LED lighting offers both economic and environmental benefits, contributing to the development of sustainable cities.