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LIGHTING LIBRARY_
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> CASE STUDIES ______________________ _| Current Periodicals | Case Studies | |
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Each of these clients has seen for themselves how much money can be saved through energy efficient lighting. |
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Baylor University made an educated move when it decided to reduce its $4.8 million annual energy bill. By retrofitting its lighting and building systems, Baylor has cut its annual energy bill by $1.6 million. These savings have allowed Baylor to spend its money on something a little more worthwhile students. The most crucial element of the project was the campus-wide retrofit of the university's lighting systems. The program saved energy and significantly raised brightness levels to current standards for the various spaces in academic buildings, dormitories and dining facilities. Within 3 years, the lighting upgrade project had paid for itself, and the savings continue to roll in. Ken Simons, Baylorıs assistant vice president and business manager, initiated the project as part of a plan to improve the utility infrastructure on the campus of over 70 building totaling 3.7 million square feet. "Our goal was to make major improvements in Baylorıs existing facilities and to prepare the school for future expansion," said Simons. Simons hears praise daily from students and faculty commenting on the brilliance and quality of the lighting system. The work was completed during off-hours when classes were not in session. The extensive relighting campaign consisted of upgrading 50,000 fixtures with energy-efficient lamps, electronic ballasts and specular reflectors. By taking Advanceıs Smart Solutions initiative, Baylorıs energy savings continue to grow. The new Advance electronic ballasts allow lamps on a circuit to continue operating after one lamp fails, helping maintain light levels and reduce maintenance costs. PROJECT: Energy-efficient lighting CLIENT: Baylor University ENERGY COST SAVINGS: $2 Million Annually with utility rebate REPLACED: Ballasts, fixtures, lamps PROJECT SCOPE: 50,000 fixtures 70+ Buildings 3.7 million square feet
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The Edison, NJ school district underwent a complete upgrade of its lighting systems. 6,300 fixtures and 38,700 fluorescent lamps powered by 2,700 Advance electronic ballasts were installed throughout the 18 schools. The schoolsı annual savings have been over $390,000, of which $25,000 are in operation and maintenance savings. The project, was partially supported by $150,000 in annual rebates for 10 years from the local utility, saved 2,200,000 kilowatt-hours a year in energy, and produced a return on investment of 13 percent. The upgrade brought classrooms and other spaces up to New Jerseyıs light level requirement, and reduced the school districtıs energy costs. The project not only paid for itself from energy savings, but it also generated a positive cash flow for the district. Additional energy savings came from the replacement of inefficient exit signs lighted with an array of light emitting diodes. The LEDs totaled only two watts per sign so they slashed electricity consumption of the old signs which were lighted with two, 40-watt incandescent lamps. Auditoriums in the high schools are frequently used as study halls and meeting rooms. They require 50 foot-candles of brightness and were illuminated by incandescent and quartz lighting fixtures that delivered one-tenth the desired light level. There were frequent lamp failures that required replacement using a cumbersome lift. For theatrical and entertainment events, low light levels and dimming down to 2.5 percent of maximum brightness were desired. To resolve these multiple issues, energy-efficient fluorescent fixtures, reflectors, lamps and Advance dimmable electronic ballasts were installed. The new lamps have a rated life of 20,000 hours, and reduced both maintenance labor and lamp replacement costs. New Jerseyıs brightness standard was met and the lights can be dimmed to satisfy the event requirements. With more than a ten-fold increase in light levels in the high school auditoriums, total power consumption dropped by 49 percent in one auditorium and 52 percent in the other. 153 inefficient fixtures lighted one high schoolıs hallways, each contained six fluorescent lamps. Retrofitted with two energy-efficient lamps per fixture, electronic ballasts, specular reflectors, and a new prismatic lens saved 80 percent of the energy and light levels doubled. A formula developed by the U.S. Environmental Protection Agency (EPA) calculates that the energy saved by the districtıs lighting upgrade prevented the annual emission of 1,210 tons of carbon dioxide, 3 tons of nitrogen oxide and 8 tons of sulfur dioxide into the atmosphere. Thereıs no place better than Edison, New Jersey to have energy-efficient, well-lighted schools. The town, named for Thomas A. Edison, completed a major lighting upgrade project in its public schools. Edison invented the electric light bulb in the Menlo Park section of Edison Township, and the project coincided with his 150th birthday. PROJECT: CLIENT: ENERGY
COST SAVINGS: REPLACED: PROJECT SCOPE:
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Spearheading the offensive is a five-stage energy savings program at Hill Air Force Base (HAFB), a large industrial complex near Ogden, Utah. The battle is being won. Annual energy savings from lighting upgrades in 30 buildings have totaled $445,500. A hospital retrofit saved $485,650 in its first six months. A repair hangar relighting has saved the base $140,177 in just one year. To begin the project, more than 13,200 lighting fixtures in 30 buildings were installed with energy-efficient lamps and electronic ballasts. Savings from this $2.3 million upgrade totaled $445,500 in energy cost and $88,000 in maintenance expense in the first full calendar year of operation. That also includes savings from mechanical and energy management upgrading in one of the buildings. Also completed was a $3.5 million lighting upgrade and mechanical work within the central plant of the base hospital. The hospital project produced energy savings of $380,650 during the first five months, and maintenance savings of $105,000 in the first 15 months of operation. Thatıs more than $1 million in annual savings. The energy-savings program has been key in maintaining the economic viability of the base and in meeting a directive to reduce energy costs. HAFB, the largest employer in the state of Utah, set out to reduce its utility bill of approximately $14 million annually, the stateıs second largest. The facilityıs 1,400 structures total more than 12.5 million square feet, some illuminated 24 hours a day. It is currently one of five Air Force Material Command Centers with extensive repair facilities where F16 fighters and C-130 cargo planes are overhauled. Because of the large size and complexity of the base-wide energy conservation project, it is being implemented in phases over five years, as part of an 18-year energy savings performance contract. The performance contract is somewhat unique. Itıs designed to use energy dollar savings from rapid payback projects to finance a significant number of projects that address longer-term operational problems. This contract arrangement thus provides the funds to implement fundamentally sound energy conservation measures which otherwise would be ignoredand, each projectıs energy savings cover its debt service. Another part of the overall upgrade of the air base consisted of lighting retrofits in an additional 49 buildings, plus base-wide steam system repairs and mechanical retrofits in two buildings, all totaling $2,385,400. The lighting retrofits included installing new, energy efficient lamps and Advance electronic ballasts. Advanceıs technology was in the spotlight in the lighting upgrade of a large aircraft repair hangar. This was a U.S. Department of Energy (DOE) Demonstration Project of extremely bright (135,000 lumens) electrodeless sulfur lamps connected to light pipes and downlight fixtures in the worldıs largest installation of the new sulfur lighting technology. The performance contractor volunteered its lighting expertise to apply to new technology to solve the hangarıs low light problem. Besides saving energy, the new lighting systems at the air base also help save the environment. Because fewer kilowatts need to be generated by the power plant, less pollution is created. For example U.S. Environmental Protection Agency (EPA) calculations show that the 3,700,000 kilowatt-hours saved by just the sulfur lamp upgrade will prevent the annual emission of more than 4,000 tons of carbon dioxide, 13 tons of nitrogen oxide and 13.5 tons of sulfur dioxide into the air. And, the thousands of replaced lamps containing mercury, and ballasts containing toxic PCBs, were properly disposed of by an EPA-licensed contractor. The HAFB project earned a U.S. Environmental Protection Agencyıs Green Lights Award. The project is a benchmark for implementing the U.S. DOEıs Federal Energy Management Program to use Energy Saving Performance Contracting throughout the federal government. PROJECT: CLIENT: ENERGY COST SAVINGS: REPLACED: PROJECT SCOPE:
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The retrofit and renovation of two lighting systems became an energy efficient dream come true for two hospitals in Northern Michigan. The Mercy Hospitals in both Grayling and Cadillac underwent upgrades to standardize their lighting systems. The upgrade in Grayling saved the hospital $27,000 in energy costs in its first year alone, while the Cadillac facility saved over $45,000. It took less than three years to pay back the initial cost of the system upgrade, while the savings continue to generate more revenue for the hospitals. At the Grayling facility, 1,680 fluorescent fixtures, 3,300 energy-efficient fluorescent lamps and 1,100 Advance electronic ballasts were installed. At the Cadillac location, 2,400 fluorescent fixtures, 4,800 lamps and 1,600 ballasts were installed. "The problem was that we didnıt have any consistency in our lighting as far as fluorescent and incandescent lamps were concerned." explained Jerry Daniels, the director of facility management at Mercy Hospitals in Grayling and Cadillac, Michigan. "We had some of this type of lamp, we had some of another. I found myself stocking the shelf with too many types of lamps." It got to the point where Jerry Daniels had just about enough. "We had too much inventory on hand and I had fixtures dating back to the 1960s," Daniels continued. "So I decided to standardize my lighting and upgrade the fixtures." And he did it without having to increase his budget. Moreover, the lighting upgrade helped protect the environment. Reduced energy meant power plants didnıt have to burn as much fuel to meet the hospitalsı energy needs, which reduced the amount of pollution produced by generating electricity. U.S. Environmental Protection Agency (EPA) statistics show that the energy saved by the hospitalsı lighting upgrades prevented the emission of carbon dioxide, nitrogen oxide and sulfur dioxide into the atmosphere. Energy savings were also realized by replacing exit signs with signs lighted with arrays of light emitting diodes (LEDs) that consumed just two watts, or only five percent of electricity of the old signs. LEDs last up to 25 years, compared to only the 1,000 hours of incandescents, which helped minimize maintenance, primarily in labor, for changing lamps. Old lamps and ballasts were sent to a recycling center where lamp components were separated for reuse, recycling or disposal. Old lamps, which contain hazardous mercury, were disposed of safely and ballasts that contained hazardous PCBs were also disposed of properly by a hazardous waste firm licensed by federal and state agencies. PROJECT: CLIENT: ENERGY COST SAVINGS:
REPLACED: PROJECT SCOPE: Cadillac, MI
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The authority cut its electricity bill for lighting by 50 percent at its 985-space South Penn Garage. The direct savings has totaled more than $40,000 per year and the Authority didnıt have to spend a dime to add those dollars to its bottom line. The South Penn Garage remedied their inefficient lighting system by removing 440 inefficient fluorescent fixtures and their 110-watt energy-eating lamps, and replaced them with 220 of high intensity discharge, vandal-resistant fixtures; 100 watt lamps and Advanceıs energy-efficient ballasts. In real dollars, the Authorityıs $7,000 a month energy bill for lighting the garage dropped to about $3,500. These savings paid the total cost of the system and its installation in less than four years. Now the savings accrue to the Authorityıs bottom line. The project started with an energy audit of the garageıs current lighting system conducted by Mid Atlantic Energy and Data Concepts, a Reading, Pennsylvania-based energy services company that can actually ensure lower energy bills for businesses. "The audit found the garage has a serious lighting problem," Oropesa explained. "Itıs far from energy efficient." The new lighting produces more illumination that is more evenly distributed than with the old system, while consuming less energy. The higher light level provides an enhanced sense of security for customers, an important feature in an urban parking structure. Photocells that detect daylight replaced old fashioned timers. They are connected to the new fixtures on the roof level to turn off the lamps when light is not needed, increasing the systemıs energy efficiency. Considering the lighting system operates seven days a week all year, the difference in energy consumption in a single year will total 680,700 kilowatt-hours of electricity. Additional energy savings were realized with the replacement of the garageıs 55 inefficient exit signs. Signs lighted with an array of lighting emitting diodes (LEDs) totaling only two watts per sign slash electricity consumption of the old signs that were lighted with two, 40 watt incandescent lamps by up to 95 percent. With their 25-year expected service life, the LEDs will far outlast incandescents with their 1,000-hour service life. The total energy savings generated by the new lighting and exit signs exceeds $40,000 annually. Cutting kilowatts saves more than dollars. According to U.S. Environmental Protection Agency calculations, the electricity saved by the lighting upgrade prevents the emission of 544 tons of carbon dioxide, nearly two tons of nitrogen oxide and nearly six tons of sulfur dioxide into the atmosphere yearly. PROJECT: CLIENT: ENERGY
COST SAVINGS: REPLACED: PROJECT SCOPE:
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