Cree, Inc. (Nasdaq: CREE), a manufacturer of LED solid-state lighting components, released the results of the first phase of the conversion of its Durham headquarters to LED lighting, which has resulted in the use of 48% less energy than the lights they replaced and plans to convert all lighting at the headquarters and manufacturing facility to LED lighting. The parking lots, entryways, lobby and conference rooms at Cree’s headquarters building are now 100-percent lit by energy-efficient, environmentally friendly XLamp(R) LEDs.That means replacing everything from high-pressure sodium parking-lot lights to the fluorescent tubes in offices and hallways to the spotlights on the flagpole out front.
“Conventional wisdom is that LED lighting is years away from widespread adoption. The truth, however, is that the performance of Cree’s LED technology enables real LED lighting solutions today,” said Chuck Swoboda, Cree chairman and CEO. “The conversion of Cree’s site demonstrates that the LED Lighting Revolution is well underway and will illustrate the benefits in energy savings, maintenance costs and environmental impacts.”
The new LED lights use 48% less energy than the incandescent, fluorescent and high-pressure sodium lights they replaced. Cree began the process in October 2007 and will continue until it replaces the tens of thousands of bulbs and tubes that light the campus, inside and out.
Cree claims that the combination of the energy savings, reduced maintenance and disposal costs and the environmental savings demonstrate that LED lighting is now a real alternative to traditional lighting solutions.
The following table from the LED Workplace website, illustrates the savings that have been obtained in their outdoor lighting.
According to Cree this conversion validates the energy savings, quality of light and reality that LED lighting is now a viable option for business and residential consumers.
On September 13 Cree announced it had achieved R&D results of 129 lumens per watt for a cool-white LED and 99 lumens per watt for a warm-white LED. These are the best results reported for packaged, high-power LEDs.
Another installation cited on the LED Workplace website is that of Sentry Equipment Corporation Oconomowoc, WI. When they decided to build a new facility, a major concern was energy-efficiency and chose LED lighting for most of their lighting.
The building’s original lighting design indicated that the company’s fixtures would require about 75 kW. The company reduced their actual lighting load, however, to only about 30 kW through effective use of daylight and high-efficiency artificial lighting, mainly LED technology.
Sentry estimates the cost for the new lighting technology has an approximate 1.3-year payback. They also project their annual lighting energy costs to be more than $13,000 less than estimated in the original lighting design.
Not all of Sentry’s lighting comes from LEDs. They use some fluorescent lighting. However, LED lighting provides the greatest energy savings. Where the company installed LED lighting, they reduced energy consumption from 14.6 kW in the original plan to an actual consumption of only 3.6 kW. The company’s LED lighting also reduced overall energy consumption since they have a power factor near 90%.
Cree is a market-leading innovator and manufacturer of semiconductors and devices that enhance the value of solid-state lighting, power and communications products by significantly increasing their energy performance and efficiency.
Cree drives its increased performance technology into multiple applications, including exciting alternatives in brighter and more-tunable light for general illumination, backlighting for more-vivid displays, optimized power management for high-current, switch-mode power supplies and variable-speed motors, and more-effective wireless infrastructure for data and voice communications.