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SnoTemp Cold Storage addresses complex lighting needs with Intelligent LED system

Jan. 28, 2015
Headquartered in Eugene OR, SnoTemp Cold Storage is a family-owned warehousing and distribution company with more than 15 million cubic feet of climate-controlled space under management.
Lighting before installation of Digital Lumens Intelligent LED lighting.
Lighting after installation of Digital Lumens Intelligent LED lighting.

Headquartered in Eugene OR, SnoTemp Cold Storage is a family-owned warehousing and distribution company with more than 15 million cubic feet of climate-controlled space under management. To meet the needs of a growing customer base, the company owns and operates two centrally located facilities along the I-5 corridor in Eugene and Albany OR, offering easy access to vital transportation routes.
The SnoTemp management team recently completed a range of energy efficiency facility upgrades, resulting in more than 5 million kilowatt-hours (kWh) of electricity saved annually. A major contributor to these savings was lighting—specifically, Digital Lumens’ Intelligent LED Lighting System. Between the Eugene and Albany facilities, comprised of one new-build and two retrofit installations, the Digital Lumens system enabled SnoTemp to:
•Save in excess of one million kWh annually in lighting-related energy usage.
•Reduce heat-related energy loads on refrigeration systems by more than 500,000 kWh annually.
•Eliminate disruptive re-lamping and re-ballasting events, saving more than $12,000 in annual maintenance costs.
•Deliver consistent levels of high-quality light throughout its facilities, enhancing productivity, safety, and energy savings.
“The Digital Lumens deployment was a significant win for our organization,” said Jason Lafferty, vice-president and general manager for SnoTemp. “Our work teams love it for the natural quality of light it delivers, even to areas of the facility that traditionally have been very hard to illuminate; our maintenance teams for the ease of modifying lighting behaviors without touching a lighting fixture, while eliminating highly disruptive maintenance tasks; and management, for its ability to collect, analyze and document facility-wide energy use, occupancy patterns, and savings down to the individual fixture level. Add extraordinary energy savings to the list, which exceeded our initial funding estimates, and the result is one truly happy customer.”
Facing decades-old challenges lighting its bulk warehousing facilities, the SnoTemp management team tested a range of fluorescent and LED alternatives for its first upgrade project, retrofitting high-pressure sodium (HPS) fixtures at the Eugene facility in May 2013. With wide-open center aisles and stacked bulk storage spaces along the perimeter—sometimes 60 feet away from the center line—maintaining appropriate light levels was difficult. With traditional HID, HIF, or HPS lighting, illuminating the vertical stacks forced management to either significantly over-light surrounding spaces to get minimal illumination to the stacks, dramatically increasing the fixture count and producing unwanted glare; or, under-light space, with predictable ramifications on productivity and safety.
Designed from the ground up with three independently aimed and dimmable light bars in each fixture, the Digital Lumens system neatly solved this challenge.
“The benefits of being able to rotate light bars within each fixture to direct lighting to critical work surfaces cannot be overstated,” said Erik Moser, sales engineer for Groom Energy Solutions, a national leader in energy efficient solutions for industrial businesses engaged by SnoTemp to design and manage the retrofit. “When combined with the ability to turn lighting off when no one is present, it solves many of the lighting challenges we see in industrial facilities today.”
By enabling managers to meet all of their footcandle targets without over-lighting, SnoTemp was able to reduce its fixture count for the retrofit from 232 HPS 150-watt and 250-watt fixtures pre-retrofit, to 114 intelligent LEDs post-retrofit, a reduction of more than 50%. For the first time, the firm also gained the ability to:
•Automatically turn on, off, or dim lighting to save energy without worrying about ramp-up times or cycling impacts on the longevity of the lamp source or fixture.
•Adapt lighting to widely varying needs (eg, high traffic, fast turnover product storage areas versus seasonally intense traffic areas for harvested products, followed by low space usage for the rest of the year as fruits and vegetables are shipped on demand).
•Respond to unscheduled or unique events, such as operational emergencies, inventory assessments, or a facility open house, by instantly changing lighting settings and saving those settings for future use.
•Document precisely how lighting energy is being used throughout the facility, with visibility down to the individual fixture level.
•Inform the meter technician sent by the utility company that the precipitous drop in energy use was, in fact, correct—and prove it.
Once the retrofit project was complete at the Eugene facility, the SnoTemp management team decided to upgrade its 280,000-square foot warehouse in Albany to the Intelligent Lighting System. In the process, the firm reduced the facility’s fixture count from 479 HPS to 216 intelligent LED fixtures, mirroring the more than 50% reduction seen at the Eugene facility. With higher-quality lighting, the company is also saving more than 550,000 kWh of electricity annually at this facility, while gaining the control needed to adjust to variable seasonal workloads based on harvesting and shipping schedules for regional fruits and vegetables.
Most recently, SnoTemp completed a 70,000-sq-ft addition to its Eugene facility, an expansion driven by increased demand for its services. During the planning and design phase, the management team at SnoTemp specifically called for the use of Digital Lumens intelligent LEDs within the new-build space. The firm ended up deploying a combination of narrow and wide optic intelligent LED fixtures, which are used for lighting stacked or open spaces, respectively.
In addition to lighting, SnoTemp has implemented a range of other energy efficiency projects, including new refrigeration equipment and control systems within all three facilities. In this way, management continues to invest in the sustainability of its business operations, with truly impressive results.
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