True Analytics™ - Energy Savings, Comfort, and Operational Efficiency
Efficiency Out of the Park
with Advanced Lighting Control
President & CEO,
Energy efficiency is
potential opportunity residing in commercial
building systems. If tapped, it is profit that grows annually as energy
prices rise. Yet for as long as this opportunity is left untapped, it
becomes more costly to implement.
In October 2009, the average cost per kilowatt-hour was approximately $0.10 for commercial buildings, 42 percent higher than the average for the year 1999. Typically the largest and least controllable load in a commercial building, lighting accounts for 20 to 40 percent of the average business’ electric bill and 25 percent of an average building’s total energy use (including electricity and all other fuels).
A large portion of this rising cost is avoidable. According to the Lawrence Berkeley National Laboratory, about $130 to135 billion, or 57 to 59 percent, of the some $230 billion annual cost of global lighting could be saved by using commercially available energy-efficient lighting technologies – with 25 to 40 percent of those savings achievable in the commercial sector.
Within this context, advanced lighting control provides a platform able to accomplish a broad spectrum of integrated strategies for the purpose of energy management, such as smart time scheduling, occupancy control, load shedding, daylighting control, task tuning and personal lighting control. Good systems are simple to design, install and use. They adapt to future needs and lend themselves to both retrofit and new building applications.
Considering that November is the month the sports world completes its seasonal transition from baseball to football, this is an opportune time to focus on a case study involving the implementation of advance lighting control in a high-profile stadium – namely, Rogers Centre in Toronto, Ontario.
TASK: GAINING CONTROL
Rogers Centre (formerly the
Skydome) is one of the world's premier
sports and entertainment arenas. Since opening in 1989, it has hosted
more than 2,000 events with more than 50 million visitors. Rogers
Centre is home to two professional sports teams – The Toronto Blue Jays
Baseball Club and The Toronto Argonauts Football Team of the Canadian
Football League. From 2008 to 2012, the arena will also host eight
Buffalo Bills football games.
The facility's versatility allows it to accommodate a variety of events with capacities from 5,000 to 60,000 spectators. As an arena, a domed stadium and an open air facility, it also hosts concerts, family shows, trade shows and conventions.
Entertainment and sports arenas are known for their heavy use of energy, in general, and lighting, in particular. Rogers Centre contains approximately 7,000 light fixtures distributed over a total area of 1.4 million square feet. Gaining control of that energy usage and related cost became imperative to its facility management team.
Rogers Centre tasked Encelium Technologies' engineering group with several priorities:
Employing a customized approach,
the advance lighting control system at
Rogers Centre was designed to accommodate needs and usage in a number
of distinct areas. For example, in the parking garage - where the
lights previously had not been switched off in 18 years – it provided
for occupancy sensor based switching control on a zone basis.
Additionally, the eight-foot, T12, 96-watt lamps were changed out with
two, four-foot T8, 32 watt lamps and electronic ballasts.
In the concourses and stairway areas, a combination of occupancy sensing and time-scheduled switching (based on building events) was employed. The existing, 175-watt metal halide fixtures were retrofitted with two, 32-watt T8 lamps and standard electronic ballasts.
All office areas and lounges were equipped with personal lighting control, time scheduling, daylight harvesting and occupancy sensing technologies. Additionally, all existing fluorescent fixtures were retrofitted with new dimming electronic ballasts. The approach in the luxury boxes involved control of lighting and television circuits by time schedule, based on Rogers Centre’s scheduled events.
The project deployed a number of energy management strategies:
result? Rogers Centre’s advance lighting control system delivered
energy savings exceeding customer expectations. Savings ranged from 56
to 79 percent throughout the building, totaling approximately $303,000
annually*. The yearly reduction of 3,731,000 kWh takes enough energy
off the grid to power more than 400 homes in Toronto.
The success at Rogers Centre illustrates how advanced lighting control goes beyond conventional lighting control capability in terms of overall control, integration, capabilities, granularity and flexibility; and results in greater cost savings and overall cost effectiveness. In all cases, advanced lighting control should offer:
Ultimately, advanced lighting control
systems must provide flexibility
to continuously integrate new, powerful innovations. When it comes to
stadiums and other commercial buildings, which take years to build and
then continue to operate for decades, that type of versatility is
essential in the ongoing quest for energy efficiency.
*Toronto Hydro Energy Services was contracted by Rogers Centre to undertake a Measurement and Verification (M&V) program to verify energy savings resulting from the lighting retrofit program. Pre- and post- construction measurements of energy use and power draw (demand) were taken and compared. Current data loggers were used to provide a means of verifying all lighting control strategies. Spot measurements of power, voltage, current and power factor were taken using an Elcontrol NanoVip Plus Power and Harmonic Analyzer. Trending data was logged using ACR Systems Smart Reader 3 Current data loggers.
About the Author
Tony Marano is president and chief executive officer
of Encelium Technologies, a technology development company specializing
in integrated lighting control systems for commercial buildings. He
joined Encelium in 2009; the company has posted a nearly 100 percent
annual sales increase in the last two years. Headquartered in Teaneck,
N.J., the firm has additional operations in Canada and Europe.
Previously, Marano was the chief executive officer of the Americas for
Cushman & Wakefield in New York and had also served as that
company’s global chief operating officer. Prior to that, he was vice
president of the business services division at Lucent Technologies as
well as the vice president of global real estate for Lucent after its
spinoff from AT&T.
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