Copyright © 2009 Cree, Inc. pg. 1 Indoor Solid State Lighting

Copyright © 2009 Cree, Inc. pg. 1

Indoor Solid State Lighting

Copyright © 2009 Cree, Inc. pg. 2

Fixture Efficacy10 lm/W17 lm/W

IncandCoefficient of Utilization

58%x =

* Including loss for thermal equilibrium @ Tj = 65°C

Coefficient of Utilization 90%Driver Efficiency 91%Thermal Equilibrium 88%*

75 lm/W =

XLampx Fixture Efficacy

54 lm/W

Fixture Efficacy35 lm/W60 lm/W

CFLCoefficient of Utilization

58%x =

WARM WHITE

CA Title 24

xx

5x more Efficient than Incandescent, 2X CFL…

Copyright © 2009 Cree, Inc. pg. 3

Indoor Applications

• Different requirements than outdoor– Warm White Color

Temperature (~3000K) required

– High CRI (>80) – Lamp maintenance not

a driving factor– High style content– Focus on energy, green– Different market

channels, cost expectations (consumer product)

Yes, these are LED!

Copyright © 2009 Cree, Inc. pg. 4

Successful Installations

• Anywhere Downlights are Used…– And High Efficacy, Excellent

Color, and Longevity are Required

• Retrofit and New Construction– Multi-family– Hotels– Restaurants– Offices– Schools– Universities– Retail– Single-Family Residences

Copyright © 2009 Cree, Inc. pg. 5

Residential Lighting

Cree LR6

Copyright © 2009 Cree, Inc. pg. 6

Walmart

Cree LR6mark_mcclear@cree.com

Copyright © 2009 Cree, Inc. pg. 7

Benefits Beyond Lighting Being Quantified

Cree Lighting LRP38 – Total Wattage = 36W; CRI = 93

Ceramic Metal Halide – Total Wattage = 158W; CRI = 81mark_mcclear@cree.com

Copyright © 2009 Cree, Inc. pg. 8

Yum Brands

Courtesy of Derry Berrigan, DBLD

• 81% energy reduction from baseline store

• 95% of lighting is high-performance LEDs

Copyright © 2009 Cree, Inc. pg. 9

Sheraton Hotel – Greensboro, NC

• 400 LR6 recessed down lights – 2000 planned

• Up to 82% energy savings

Copyright © 2009 Cree, Inc. pg. 10

– Indoor hibay– Indoor fluorescent

• Still some work to be done (0-3 years)– Higher wattage roadway– Replacement bulbs

• Education is key– DOE Energy Star and other quality programs will

help

Summary

– LED Fixture design learning curve

• All the major pieces are in place:– Standards– Performance

– Lower wattage street lights

– Indoor down lights– Freezer cases/displays

• LEDs save real energy and make good economic sense in many important applications now:– Parking decks, canopies– Hazardous work areas– Pedestrian, bollards, etc.

Copyright © 2009 Cree, Inc. pg. 11