Energy efficient lighting
Green hotel lighting solutions
LED lighting is gaining momentum for many reasons, and the major reason among them is energy efficiency. The opportunities to replace conventional light sources with LED lighting for general illumination are growing, fueled in part by the continued advancements in LEDs and the global need for energy-efficient lighting alternatives. Matching the cost of conventional lighting is a further critical element for replacement. The true measure of cost goes beyond just the initial cost of the lighting system and incorporates lifetime and operational costs. Despite the fact that initial costs of LED bulbs are higher than the cost of incandescent or halogen lightings, the long term savings certainly pay off and contribute to the ecology. Intelligent LED lighting systems are intersecting the cost of light of incandescent and halogen sources and are rapidly approaching the economic cross over point for fluorescent sources.
Regular incandescent light bulbs are very inefficient; up to 95% of the energy consumed by an incandescent light bulb produces heat, not light. More efficient are compact fluorescent light bulbs which use up to 75% less energy per bulb. However, LED light bulbs use up to 90% less energy than, far less than any other light source, and therewith contribute considerably to energy conservation.
The efficacy of LED sources, measured in lumens per watt, is overtaking that of incandescent and halogen sources. LEDs stand out through their low energy consumption: they typically use 10-20% of the energy that a normal incandescent light uses. Their extreme longevity which can last up to 50,000 hours ensures less maintenance cost for light installations, less usage of bulbs and therewith also less waste for the environment. Thus state-of-the-art LED lighting systems support energy conservation and cut significantly maintenance costs. For example, the initial costs of an incandescent source may only be fifty cents; however, its energy consumption will easily cost more than ten times over its relatively short life. When a new source must be purchased, the cycle begins anew.