You can still browse the site but some services may not work properly. This site requires Google Chrome, Firefox, Safari or Internet Explorer 10 and above. For mobile devices use an HTML5 capable browser.Download Chrome
High-Pressure Sodium, Metal Halide, LED, Induction, and Fluorescent Lighting and Lighting Controls: Global Market Analysis and Forecasts. Outdoor lighting systems are a major contributor to global energy use. While LED lighting and controls are making inroads into commercial and domestic lighting, inexpensive high-pressure sodium (HPS) lamps lead in outdoor lighting and will take longer to displace. LED outdoor area luminaires must compete with the other lamp types that are still relatively energy efficient, making it more challenging to achieve lifetime cost savings in a market led by retrofits and replacements.