A new approach to power consumption reduction of street lighting

Annual energy costs of streetlighting power usage are expected to reach $23.9 billion to $42.5 billion by 2025. Those numbers encourage us to search any methods reducing energy consumption. In this article we propose a new approach to achieving power savings. The approach is based on combining daylight harvesting methodology and lighting class reduction. Its novelty relies on the analytically determined adjusting of fixtures´ dimming levels which ensures the compliance with mandatory lighting standard. In the article we show appropriate test cases and give quantitative results of applying the proposed method.