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A nationally recognized food processing and distribution company
contacted Power Management Co. to conduct a lighting energy audit for one of their Upstate New York food processing and warehouse facilities.
The facility was separated into three areas: office, production and warehouse freezer. The LightSavers team audited the facility and
identified lighting efficiency tactics for each area.
In the office areas, the existing T12 light fixtures were retrofitted with new high efficiency T8 ballast and lamps.
The production area had T12 vapor tight fixtures and 400 watt metal halide fixtures. The vapor tight fixtures were retrofitted with new
high efficiency T8 ballast and lamps; and the 400 watt fixtures were replaced with 6 lamp T8 high intensity fluorescent light fixtures.
The warehouse freezer had 400 high pressure sodium (HPS) fixtures. These were replaced with 6 lamp T5 high intensity fluorescent light
fixtures. The T5 system supplies more comfortable white light compared to the yellow HPS light.
One of the advantages of the fluorescent system was the ability of the lights to come back on after a brown out. The HPS lights took 5
– 10 minutes to turn back on, which left the operators in the dark.
The annual energy removed from the facility was 785,404 kWh at a savings of $78,540. The effective cost of the project was $124,144 for
a pay back of 1.4 years. The total kWh saved was over 46% annually.
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