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.