Effective Control of Road Luminaires—A Case Study on an Example of a Selected City in Poland

According to various estimates, street lighting in Poland consumes between 1.500 and 2.500 GWh per year is responsible for some greenhouse gas emissions from electricity generation. Also on the basis of it estimated that approximately 3.3 million road luminaires are used Poland. The increase costs, one hand, technical possibilities field lighting, other, force search new solutions aimed at saving during operation electrical devices installations, including installations. One methods replace with energy-saving ones LED sources, but also sodium metal halide sources. latter solution cheaper allows us keep existing poles, installation luminaire heads if their parameters have not been degraded. already discharge sources can be provided they meet requirements Polish law EU regulations. Like an adjustable value emitted luminous flux, which save electricity. installations effective control. Such control take place very different levels, manual setting required light intensity using dimmers full automation taking into account other factors influencing system, e.g., time day, external light, presence users, weather conditions others. article describes both above-mentioned methods, describing advantages disadvantages actual measurements working analyzes annual a modernized automatic selected cities