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1 How to Submit Your Question Step 1: Type in your question here. Step 2: Click on the Send button.

2 Solid State Lighting (SSL) Technology Where We ve Been? What s s Working Now? What s s Next? December 1, 2011 Polling Question No. 1 Are you including SSL products in your energy efficiency/demand response programs today? Polling Question No. 2 Is your cooperative installing outdoor LED fixtures supported by measurement and validation of performance?

3 Polling Question No. 3 Would you be willing to share field results with the Cooperative Research Network as pertains to outdoor LED security lights? Polling Question No. Would it be useful to have NRECA training materials to support a SSL demonstration? Today s Agenda: 1. SSL Today 2. SSL Standards - What s New? 3. Lessons from the Front Lines: Phase I and Phase II. Market Barriers and Why? 5. New Frontier of CRN Research

4 Recent Rapid Advancements in SSL Driving A Significant Transformation of the Lighting Industry LEDs Do Save Energy validated by: CRN - Phase I and Phase II Field Research (NRECA s Cooperative Research Network ) DOE Caliper and Gateway Reports ( ) Source: Dept of Energy SSL Gateway/Caliper Testing in 2011 Decorative Residential Streetlights SSL Technology Today Average Efficacy at 2011: 61 lm/watt (Compared to 1 lm/watt in 2009) Indoor 0-50 lm/watt Outdoor lm/watt lm/watt now available (IESNA Outdoor Street and Area Conference; New Orleans, LA Sept 2011) Source: DOE SSL, Caliper, Round 13; October 2011; Caliper Round 8, 2009

5 How Does 2011 LED Efficacy Compare to Traditional Lighting? Application Average LED Efficacy Conventional Lighting (HID/Fluorescent) High Bay Luminaires 68 lumens per watt 66 lumens per watt Wall Packs 6 lumens per watt 35 lumens per watt 2x2 Troffers 56 lumens per watt 5 lumens per watt 2x Troffers lumens per watt lumens per watt Street and Area Lights lumens per watt lumens per watt Source: Caliper Round 13, 2011 LED Professional Journal, CRN Test sites in 2010 More SSL Technology Today Wide variability in fixture performance, but beginning to shorten Most CRN demonstrations show matched or better quality illumination (with the exception of classrooms) Rapid pace of advancement gives a look at what s to come (soon); lm/watt (Electronic Products, Nov 2011) Less Variability in Power Factor (Caliper 13, Oct 2011) ENERGYSTAR SSL Specification >.90 PF

6 Residential 60 watt replacement? L-Prize Lamp Incandescent Bulb (60 watt) Lumens 910 lm 800 lm Wattage 10 watts 60 watts Efficacy (lm/watt) Correlated Color Temperature 2727K 2,000 3,000K Color Rendering Index Rated Useful Life 25,000 1,000 Dimming Yes Yes Cost $50 $1 L-Prize tested version commercially available in 1 st quarter 2012 Commercial Applications First Residential, Middle of 2012 Costs are Dropping LEDs 8 LEDs 650 lumens 575 lumens 12 watts 10 watts $90-$100 $50 LED chip cost is less of a contributor to fixture cost LED Chip Driver Optics Housing Source: Cree 2011

7 Lighting Class LEDs are Different 5mm LEDs Lighting Class LEDs No thermal path Thermal path LED Lifetime: It s Different

8 CRN s Goal with Emerging SSL Technology? Provide members with everything they need to know to make informed decisions about SSL systems - How does the technology fit? - How will we communicate results to members? - Standards a good start, but need field evaluation. SSL Requires EM&V that is different Performance Complexities Customer Interface and Valuation Standards LM-79: Approved Method for Electrical and Photometric Measurements of Solid State Lighting Products LM-80: Approved Method for Measuring Lumen Maintenance of LED Light Sources (55 C, 85 C and 3 rd of choice) TM-21: Approved Method for Lumen Maintenance Testing of LED Light Sources (just published in Sept 2011)

9 The Life Puzzle of LED Lighting Systems Sealants Paint Gaskets Driver Optics TM-21 Adhesives Thermal Mechanical More on Standards UL 8750 Standards for Safety of LED Equipment for Use in Lighting Products Addresses safety requirements for LED components Interoperability or Replaceable Parts Warranty: 3 years typical.5 years more common LED Drivers Considered the brain of the LED Drivers are extremely complex components Make certain to ask how drivers are included in product warranties

10 CRN Demonstrations Validated: LEDs save energy LED Application Streetlights GE Evolve BetaLED Way Philips Roadway Parking Lots Relume Leotek GE Evolve Beta Edge Agriculture Dairy Swine Poultry Classroom 2x2 Recessed Troffers 2x Recessed Troffers Energy Savings Efficiency (lm/watt) 50% 51% 3% 78% 0% 61% 5% 50% 78% 0% Source: CRN ; Hoosier Energy 2011 Payback Net Present Value (20 yr) $1,633 $2,207 $2,100 $1,01 $ 192 $ 67 Validated: Efficacy on the Rise LED Application Streetlights GE Evolve BetaLED Way Philips Roadway Parking Lots Relume Leotek GE Evolve Beta Edge Agriculture Dairy Swine Poultry Classroom 2x2 Recessed Troffers 2x Recessed Troffers Source: CRN Energy Savings Efficiency (lm/watt) 50% 51% 3% 78% 0% 61% 5% 50% 78% 0% Payback Net Present Value (20 yr) $1,633 $2,207 $2,100 $1,01 $ 192 $ 67

11 Validated: Reasonable Payback LED Application Streetlights GE Evolve BetaLED Way Philips Roadway Parking Lots Relume Leotek GE Evolve Beta Edge Agriculture Dairy Swine Poultry Classroom 2x2 Recessed Troffers 2x Recessed Troffers Source: CRN Energy Savings Efficiency (lm/watt) 50% 51% 3% 78% 0% 61% 5% 50% 78% 0% Payback Net Present Value (20 yr) $1,633 $2,207 $2,100 $1,01 $ 192 $ 67 Streetlights Let s Not Guess Change in Average GE-Evolve Illuminance 6,000 hrs Photopic (.006)-1% Scotopic (.02)-5% Beta LEDWay Good! Photopic (.002) 0% Scotopic (.03) -5% Philips RoadStar Photopic (.180)-32% Scotopic (.251)-33% High Pressure Sodium Photopic (.111) -12% Scotopic (.087) -15% Margin of error ±5% Not so good Do LED Streetlights Meet IES RP- 8 Roadway Standards? Lighting Product Average Illumination (.-.7 footcandles) Average Uniformity (6:1) GE-Evolve YES( ) NO (8.08) BetaLEDWay YES( ) YES(6.70) Philips RoadStar No( ) No(7.9) High Pressure Sodium YES ( ) Footcandlesafter 6,000 hours No(31.6) Comparison of 150 watt HPS replacements 30 foot mounting height 150 feet between poles

12 LED Streetlight Distribution Varies Flagstaff Street, City of Apple Valley, MN & Dakota Electric Association Cold Storage Warehouse Let s Not Guess Courtesy of Hoosier Energy, 2011 Where Does SSL Make Sense? Outdoor Streetlights DOE smunicipal SSL Consortium s Model for LED Roadway Lighting C&I Applications; High-Bay High Maintenance Costs ($ /hr) Better Quality Illumination High Burn Time (>12-15 hours/day) Higher average K/Wh rates $>.12 Community outreach and/or community education

13 But Is There Something More? New value beyond k/wh savings? Enhanced safety? Lighting controls? Livestock and Poultry Behavioral Impact?? Increased Milk Production? Validated 60% energy savings (power draw of 120 watts) 6% increase in milk yield (100+ cows) Warrants further investigation Source: Oklahoma State University, Sept 2011 Enhanced Product Durability? CFLs not IP rated Ingress Protected (IP-65 Rated) LEDs The Holy Grail of Innovation? -Have never seen anything like it, but find they can t live without it when they have it

14 Validated 50% energy savings (LED power draw of 15 watts) TRUE Peoples Electric Cooperative Erroneous or True? Faster growth rates? Less feed waste? Healthier livestock? INNOVATION HAPPENS RESEARCH UNIVERSITY - BASED RESEARCH SSL BUSINESS& TECHNOLOGY COLLABORATION NRECA scooperative Research Network Research Initiatives HERE CRN Research Initiatives for NEMA HEAD LED Security Light vs. Induction (Eastern Iowa Cooperative) 2. Agricultural Business Meeting (May 30-31, 2012 in St. Louis, MO) and Syndicated University-Based Ag Research

15 In Closing SSL becoming a player in Energy Efficiency Programs Many standards are in place to support demonstration Market adoption is still a matter of cost Long-term reliability still an unknown Behavioral value warrants further investigation Thank you questions? How to Submit Your Question Step 1: Type in your question here. Step 2: Click on the Send button.

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