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Aztec Energy Partners: Dept. of Energy Case Study

For Immediate Release

November 2009

LED Freezer Case Lighting: Albertsons Grocery

CONYERS, GA. - The Department of Energy recently completed a case study to determine the benefits of utilizing LED striplights combined with occupancy sensors on upright freezer cases. Aztec Energy Partners was responsible for the installation in this particular Supermarket and has completed over 40 similar LED projects (over 3,000 fixtures) resulting in significant energy reductions and a typical payback of two years. For more information on the results of this case study, please click the link below or email us at info@aztec-energy.com and we will send you a pdf copy.

Click here to download the case study.

Case Study Highlights:

3.1 Energy Savings Analysis

Energy savings exists on several levels due to the retrofit to LEDs, the use of occupancy sensors, and an estimate of associated compressor savings. Each of these is estimated to be as shown in Table 1 and described below:

Table 1. Summary of Energy Savings for Single 5-door Refrigerated Case Savings Type	kWH/Year	Percentage of FL baseline
Wattage Reduction	1,682	61%
Occupancy Sensor Reduction	322	12%
Total Lighting Savings	2,004	73%
Compressor Operation Reduction	655	NA
Total Retrofit Savings	2,659	NA

The total estimated savings of 2,659 kWh per year for a 5-door case represents a 73% savings of the lighting itself plus the additional 655 kWH of compressor energy.