Post-Top LED Street Lamps Help the City of Roses Reduce Energy and Maintenance Costs.
Internationally famous for the Tournament of Roses Parade, NASA's Jet Propulsion Laboratory, California Institute of Technology, and the Rose Bowl, Pasadena was one of the early cities to sign onto the U.S. Conference of Mayors Climate Control Agreement in 2005, committing to reduce its carbon footprint dramatically by 2020. It is one of the few cities in the nation to draft and implement a Green City Action Plan.
Along the same line, the city was one of the first to apply to a federal grant earmarked for energy programs that was part of the $787 billion stimulus package Congress approved in 2009. Pasadena had several œshovel-ready projects at hand, many of them involved using longer-lasting, more energy-efficient LED (light-emitting diode) bulbs to replace outdated metal halide (MH) street lights that waste energy and have high maintenance costs.
LEDtronics, Inc. is one of the Southern California companies helping the Pasadena City Council in its goal to œincrease conservation and sustainability and put these funds to good use.
Even before the federal stimulus grant became available, LEDtronics, a Torrance-based firm that started the energy-saving LED lighting innovations in the U.S. almost 30 years ago, had helped the city implement several light-replacement projects. Working with the city's Department of Public Works, LEDtronics supplied fifty 40-watt LED acoustic-ceiling fixtures that replaced old 90-watt ballasted-type fluorescent fixtures in Pasadena Central Library's document room. Subsequently, the company designed and implemented a high-power 95-watt LED cluster for retrofit to replace metal-halide bulbs and ballasts totalling 900 watts in the pendant lighting fixtures in the library's main lobby and other common areas. The project did not compromise the library's historical integrity, and helped the city save tens of thousands of dollars annually in energy and maintenance costs. LEDtronics also had helped to customize Pasadena High School's aging message board with 2,500 red Â½-watt miniature LED bulbs.
Over a span of three years, LEDtronics has also worked with the Pasadena Department of Public Works for the installation of new post-top LED streetlights for the replacement of high-wattage metal-halide bulbs”part of an ongoing capital improvement project to add, refurbish or replace approximately 54 miles of street light systems around the city.
œWith our post-top LED units, the city can expect to save up to 80% in energy consumption after the replacement, said Greg Krymer of LEDtronics. œThe post-top LED lamps use only 27 watts, compared to the metal-halide bulbs being replaced that consume 100 watts, with an additional 30 watts for their ballast.
LEDtronics LED30MH-600-TPW-002 lamp compared to a typical HPS bulb
After the success of the initial six beta-test post-top LEDtronics units installed on the residential Daisy Street in the city's eastern district, within months the first major LED streetlight installation was completed in its western district. Approximately 50 of the LEDtronics LED30MH-600-TPW-002 lamps were installed in decorative globe fixtures atop 15-ft cement utility poles along the northern section of Orange Grove Boulevard”the thoroughfare where the annual Rose Parade starts. In addition to estimated annual energy cost savings of up to 80%, the city anticipates decreased maintenance demand and a much longer lifespan ” up to 50,000 hours of continuous operation, according to Mr. Krymer.
Other expected LED benefits include much greater ambient clarity, which improves traffic and pedestrian safety, less light intrusion into surrounding homes and businesses, less light pollution into the night sky, as well as reduced carbon emissions. The LED product contains no mercury, lead or other known disposal hazards, and LEDs come on instantly without run-up time or restrike delay.