Most retail spaces need 1 LED fixture per 4-6 square meters for general ambient lighting at 300-500 lux. High-ceiling stores require more fixtures or higher wattage. Accent lighting for displays needs additional track lights positioned 1-2 meters apart depending on beam angle and merchandise layout.
Retrofit LED tubes and bulbs can replace fluorescent and metal halide lamps in existing fixtures, reducing upgrade costs by 40-60%. However, complete fixture replacement delivers better efficiency, light distribution, and lifespan. Retrofit works for budget-conscious projects while full replacement maximizes long-term energy savings and performance.
UGR (Unified Glare Rating) measures visual discomfort from direct light sources. Retail spaces should use fixtures with UGR below 19 for general areas and below 16 for fitting rooms and checkout counters. Lower UGR values reduce eye strain and create a more comfortable shopping environment for customers.
Position accent lights at 30-45 degree angles from above to highlight merchandise without creating reflections on glass. Use 3-5 times more light on window displays than interior ambient levels. Cool white (4000-5000K) with high CRI cuts through daylight glare and makes products visible from the street.
Look for CE marking for European safety compliance, UL or ETL listing for North American markets, and RoHS certification for hazardous substance restrictions. Energy Star or DLC certification indicates energy efficiency. For specific retail environments, IP ratings (IP20 minimum indoors, IP65 for wet areas) confirm environmental protection.
