Franklin High Bay Cold Storage Facility

Our team measured and evaluated the light and electrical performance of a 170-LED intelligent lighting system installed within a 120,000 square-foot freezer facility. Results showed a 50% increase in footcandles compared to the T5s they replaced with enhanced occupancy sensing to deliver a projected 25% energy savings. Further evaluation continues as pertains to demand response and coordination with smart Grid.

Research Report


  • - A measured 42% reduction in peak demand compared to the T5 lighting system replaced.


  • - LED input wattage higher than claimed by manufacturer.


  • - A 40% increase in measured light levels compared to the T5 lighting system they replaced although more than a 50% reduction in footcandle readings after 1 year raises questions about long-term reliability.


  • - Technology payback of 4 years.
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