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Lighting Hours of Use EnergyStar New Construction David Baylon.

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Presentation on theme: "Lighting Hours of Use EnergyStar New Construction David Baylon."— Presentation transcript:

1 Lighting Hours of Use EnergyStar New Construction David Baylon

2 Metering Lighting Runtime KEMA evaluation of EStar new construction logged hours of use (HOU) – 467 fixtures logged in 68 homes – Fixtures logged using an on-site random assignment Runtime accumulated by room type. Average HOU calculated from the weighting of each room type. For sample average HOU for the lighting systems was 1.2 hours

3 HOU Calculation The 2005 Residential New Construction Characterization (RLW,2007) – 604 lighting audits across the region – Detailed Lighting power divided into 24 room types – Reallocated into EStar HOU categories The EStar evaluation (KEMA, 2010) – 345 homes with lighting audit, – 68 with runtime meters on 6 to 8 fixtures. – Runtime weights use the lighting loggers only Final HOU estimate: RLW fixture weights, KEMA runt time results

4 Weights by Room Type

5 HOU metering results

6 Hours of Use, New Construction Room TypeHours/DayRLW Weights Baths % Beds % LR % Kit % Hall % Closet0.53.3% Office2.12.8% Other % Exterior3.8*4.9% Total % *California, “Upstream Lighting program” evaluation,2010

7 Conclusion New construction lighting runtime should be reset. Current lighting runtime used for savings based on 2 hrs/lamp/day This suggests the runtime assumption be reduced to 1.5 hrs/lamp/day


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