Central and South Florida Shallow Retrofit Pilot
Replaced ~56% of bulbs (avg. 35 per home) with CFLs/LEDs, reducing connected load by 1,429W.
Central and South Florida Shallow Retrofit Pilot
Real Life Case Study
This pilot targeted 56 single-family homes (avg. 1,777 sq ft, built 1942–2006) with phased shallow measures, emphasizing lighting as a low-cost entry point.
(DOE-Funded, 2012–2013)
Design and Technologies
Replaced ~56% of bulbs (avg. 35 per home) with CFLs/LEDs, reducing connected load by 1,429W. Included hot water wraps and coil cleaning; lighting focused on high-use areas like kitchens and living rooms.
Implementation and Challenges
Contractors completed in 4 hours/home ($374 total cost, $121 labor). 60-day pre/post monitoring via meters.
Challenge: Variable pre-existing efficiency; deeper replacements in low-LED homes yielded better results.
Results and Energy Savings
Lighting drove 1.2 kWh/day savings (17% of lighting/plug loads), contributing to 4.2 kWh/day overall (9% whole-home). Payback: 2 years.
Summary
Lighting offers reliable, quick wins; savings scale with replacement depth. Lesson: Use regression analysis for projections—25% variation tied to % bulbs changed; extend monitoring beyond 60 days for seasonal accuracy.
Last updated on November 8, 2025
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