Lighting Research Program

1. Lighting Research Program Technology Highlights May 2005 Judie Porter, CEM, LEED AP Architectural Energy Corporation

2. What is the Lighting Research Program? • Two-year $5.2 million R&D program • developed and introduced energy-efficient lighting technologies into the marketplace. • Set of diverse projects • included 15 technical and three market connection projects. • Unique partnership sponsored by the California Energy Commission • managed by Architectural Energy Corporation; involved various researchers and manufacturers.

3. What Is the Value of the LRP? For California citizens, the LRP provided the opportunity to: • Save energy, lower peak electricity demand, and reduce pollution. • Integrate research with market connection activities. • Leverage expertise and co-funding from lighting manufacturers and organizations.

4. Integrated Classroom Lighting System Product: A high-performance lighting system with integrated sensors and controls for classrooms and training facilities. ‘Basic’ Option • Direct/indirect fixtures that use 96% reflective white paint to improve fixture efficiency. • Two rows of fixtures for maximum savings with manual switching for daylighting control. • 3100 lumen super T8 lamps and 1.18 BF electronic ballasts (2-rows light a 32-foot wide classroom).

5. Integrated Classroom Lighting System ‘Better’ and ‘Best’ Options • Dimming with teacher control switch (TCS) to lower light levels for A/V presentations and provide Quiet time mode. • Addition of photosensors to provide automatic daylight control. • Third row of fixtures added for better uniformity on desks, ceilings, and walls (.88 ballast factor).

6. Integrated Classroom Lighting System Test classrooms installed in six California schools; 19 classrooms monitored for entire school year. Energy Use Before 1.75 watts / sq foot Energy Use After 0.85 watts / sq foot

7. Integrated Classroom Lighting System Results • Reduced energy use by 30 to 50%. • Reduced glare and eyestrain for teachers and students. • Improved light levels on teaching walls. • Increased teacher satisfaction through better controls. • A/V mode had calming effect on students.

8. Integrated Classroom Lighting System Economics • Installed cost ($2.71/sqft) for a two row system is less than a typical layout of 15 Parabolic Troffers ($2.86/sqft). • The “best” system (3 rows with A/V) is approximately $3.81/sqft. • Two row system helps school districts stay within construction budget yet provide quality lighting. • Manufacturers are Finelite and The Watt Stopper (TWS).

9. LED Exterior Fixtures • Product: Exterior lighting systems integrating quality optics with solid state technology and controls. • The California Lighting Technology Center (CLTC) developed a hybrid LED/incandescent fixture with an integrated occupancy sensor. • Incandescent used because of low first cost versus higher cost of CFLs; CFL option may be offered. • Exceptional optics and energy efficiency. • Applications - commercial / residential entry and walkways (apartments, college campuses).

10. LED Exterior Fixtures How it works • Amber LED array runs continuously during the night. • Occupancy sensor turns on the incandescent lamp when motion is detected. • After a few minutes, the occupancy sensor turns the incandescent off. • There is always light in the coverage area.

11. LED Exterior Fixtures Results • LED array uses 5 W per nighttime hour. Assuming only 1 burn hour per night, incandescent lamp consumes 75 W. Total ~125 W over 10 hours. • With ~50,000 hours of life, LEDs should last 13 years. Less use each night extends the incandescent lamp life. • LEDs provide sufficient light to identify the surroundings. • Incandescent lamp provides expected outdoor light levels.

12. LED Exterior Fixtures Manufacturing Partners • Shaper Lighting - products available. • The Watt Stopper -LED/PAR lamp security lights available late 2005. • Demonstrations underway w/National Park Service and Sacramento apartments.

13. Bi-level Stairwell Fixtures • Product: Integrated ultra-sonic motion sensor dims lamps to save energy when stairwells are unoccupied. • Applications - commercial interior stairwells with no windows (retrofit / new construction), storage areas. • Reduces energy use in stairwells virtually 24/7. LaMar Lighting developed product. • Provides life-saving light when building occupants need it for emergency egress. • Designed to provide 1 fc as required by local and national code officials; also meets new ANSI code (10 fc).

14. Bi-level Stairwell Fixtures Features • Ballast options: 5,10, or 33% of full light output. • Varying fixture styles, lamps, voltages with integrated occupancy sensor. • Example consumption: full light output (two 4’ T8 Lamps) 62 W; stand-by output (10%) 13 W. • Four buildings installed and monitored: UC Berkeley (10 stories), Alameda County (11 stories), SBC (10 stories), Chiron (5 stories). Building occupants surveyed.

15. T-12 retrofit 10% standby Occupied Mode Bi-level Stairwell Fixtures Payback calculations based on $0.155/ kWh Project Results • Dependent on dimming and lamp configuration. • Retrofit paybacks are 4 to 10 years. • New construction paybacks are 2 to 8 years. • Occupant response positive.

16. Energy Efficient CFL Downlighting • Product: An energy efficient plug and play downlighting system using CFLs. • The CLTC developed the system with Lithonia. • Applications - residential and commercial downlighting areas (both retrofit and new construction). • Sacramento homebuilders have installed the new residential units in 400 homes. • Currently, commercial retrofit product available.

17. Energy Efficient CFL Downlighting Features • Plug-and-play wiring greatly reduces costly wire-nut connections. • Quick, simplified andflexible optical head mounting. • Two-lamp ballast cuts ballast costs in half.

18. Energy Efficient CFL Downlighting Benefits • Easy to install in t-bar ceilings. • Energy savings 60 to 75% over incandescent. Power (Watts) 26.8 Lamp Lumens 1800 Fixture Lumens (Lm/W) 1341 Fixture Efficacy 50.04 Fixture Efficiency 74.5% • Longer lamp life. • Output greater than 65W R-Lamp downlight (1050 lumens) or 75W R-Lamp downlight (1200 lumens). • Uniform light levels with the opportunity of using less units per area.

19. More PIER LRP Technologies • Smart bathroom fixture; LED nightlight switch • LEDs and integrated occupancy sensor; provides low level lighting when area is unoccupied. • Applications - large scale hotels and assisted living facilities. • Reduces energy use yet provides ability to see at night. • Energy savings 45 to 50%. • SpecLight and The Watt Stopper.

20. More PIER LRP Technologies • New classroom photosensor; handheld calibration tool (TWS) • Calculates “task to photosensor” ratios for electric lighting and daylighting. • Can export readings for cxing reports. • Expected in 2006. • Low glare outdoor wall sconce (Gardco) • 100 W ceramic MH w/electronic ballast. • Energy savings 30%; Provides better coverage. • Expected late 2005.

21. More PIER LRP Technologies • Portable fixture for private or open office spaces (CLTC and Finelite) • Integrates task/ambient lights with occupancy sensor. • Delivers light where and when needed. • Maximizes occupant comfort and energy savings 40 to 60%. • LED task lighting (LBNL and Luxo) and low profile elevator lighting (LRC) • Long lamp life and reduced energy use. • Excellent durability and highly controllable.

22. Lighting Research Program Information on the LRP products is available on the following web sites: www.energy.ca.gov/pier/buildings/projects/500-01-041-0.html www.archenergy.com/lrp