B O N N E V I L L E P O W E R A D M I N I S T R A T I O N

Residential LED Recessed Down light Fixtures

RTF

January 4, 2011

B O N N E V I L L E P O W E R A D M I N I S T R A T I O N

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Background

RTF deemed savings for specialty bulbs at April 2010 meeting.

LED Downlight measure was included:

Analysis was completed with same inputs and assumptions as reflector (specialty) bulbs

Lamp Type Direct Install Retail Direct Install RetailLED Downlight- Inc_base 0.9 1.1 34.1 35.2

TRC B/C Ratio Annual kWh Savings

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Residential LED Down Light Fixtures

New LED recessed down light fixtures• Recommend updating

– Hours of use from 1.9 hours/day to ~3.0 hours/day Specific hours of use by room type instead of average for

applicable uses

– Efficacy requirements – Increase to 50 Lumens/watt

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Updated Inputs – Hours of Use

RTF approved Hours of Use

Lamp TypeDaily

Hours of Use

Source

LED Downlight- Inc_base 1.9

The Cadmus Group, Inc. "Residential Retrofit High Impact Measure Evaluation Report", prepared for the California Public Utilities Commission, February 2010

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RTF Hours of Use by Room TypeHours of Use (hours/day), by Room Type

Room Type DOE 2002 KEMA 2005 EMI 2007 Average

Dining room 2.5 2.5 3.0 2.7

Kitchen 3.0 3.5 3.9 3.5

Bathroom 1.8 1.5 1.7 1.7

Living Room 2.5 3.3 3.1 3.0

Exterior 2.1 3.1 3.4 2.9

Bedroom 1.1 1.6 1.3 1.3

Family/Den 1.8 2.5 2.5 2.3

Hallway/Foyer /Stairs 1.5 1.6 1.6 1.6

Garage 1.5 2.5 2.5 2.2

Office 1.8     1.8

Basement/Utility Room        

Laundry   1.2 1.3 1.3

Closet        

Other   1.9 1.9 1.9

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Average based on all room types

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RTF Reflectors by Room Type

Analysis of reflectors

Not appropriate for downlight application

Likely only installed in dining room, kitchen, and living room• Need to be

dimmable

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(from KEMA 2010, CA Statewide for CPUC)

Locations of Bulbs ReflectorBathroom 9%Bedroom 6%

Kitchen 21%Exterior 20%

Living Room 9%Hallway/Foyer /Stairs 14%

Dining room 3%Basement/Utility Room na

Family/Den 7%Laundry na

Other 2%Closet na

Garage 1%Office 6%Total 98%

Percentages by lamp type may not add to 100% due to rounding

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Calculating Daily Hours of Use

For lamp types not metered in CA study• Use location* (room type) and hours of use by

location** to determine lamp hours of use

*The Cadmus Group, Inc. "Residential Retrofit High Impact Measure Evaluation Report", prepared for the California Public Utilities Commission, February 2010

**Navigant Consulting, "U.S. Lighting Market Characterization, Volume I: National Lighting Inventory and Energy Consumption Estimate Final Report", Table 5-9, p 40, Prepared for U.S.

Department of Energy Office of Energy Efficiency and Renewable Energy, 2002

**KEMA, Inc.,”CFL Metering Study” for Pacific Gas & Electric Company, Southern California Edison Company, San Diego Gas & Electric Company, 2005.

**Energy Market Innovations, Inc., "Puget Sound Area Residential Compact Fluorescent Lighting Market Saturation Study", November 2007

RoomType

RoomTypeRoomTypelamp Prevalence*HOUHOU

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Updated Hours of Use Calculation

Reweight prevalence by applicable room types

3.35 hours weighted average• Rounded to 3 for analysis

Room TypeHours of

UseReflector

Prevalence

Re-weighted for downlight

applicationsDownlight

Hours of Use

Kitchen 3.5 21% 64%Living Room 3.3 9% 27%Dining Room 2.5 3% 9%

0.33 3.35

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Savings and Cost Effectiveness

3 hours 6th Plan ProCost

• All other inputs consistent with approved analysis

Increase of about 20 kWh per bulb

Lamp Type Direct Install Retail Direct Install RetailLED Downlight- Inc_base 1.5 1.6 53.9 55.6

TRC B/C Ratio Annual kWh Savings

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Proposal

Revise deemed savings for Approved LED Recessed Down Light fixtures for use in residential applications. 

Recommended Measure Specifications:• Must be Energy Star rated LED fixtures

– 3 year minimum warranty

• In addition to Energy Star, product must also be rated at a minimum of 50 Lumens/watt.