Lighting Research Program

1. Lighting Research Program Product Highlights March 2, 2004 Funded by California Energy Commission's Public Interest Energy Research (PIER) Program

2. What Is the Lighting Research Program? THE LRP IS… • a two-year $5.2 million R&D program focused on developing and introducing new energy-efficient lighting technologies into the marketplace. • a set of diverse projects that includes 15 technical and three market connection projects. • a unique program sponsored by the California Energy Commission, which engages numerous researchers and manufacturers, and is managed by Architectural Energy Corporation.

3. What Is the Value of the LRP? For California citizens, the LRP provides the opportunity to: • reduce peak electricity demand and energy use. • integrate research with market connection activities. • leverage expertise and co-funding from lighting manufacturers. • minimize pollution throughout California.

4. Why Fund a Lighting R&D Program? LOTS OF REASONS… • To address the widespread use of inefficient lighting sources in residential and commercial applications. • To focus attention on the successful application and impact of energy-efficient lighting. • To encourage coordination and collaboration among researchers and manufacturers. • To provide a forum to develop and evaluate technology opportunities.

5. Technology Elements of the LRP LUMINAIRES & SYSTEMS DEMAND RESPONSE ADVANCED TECHNOLOGIES TESTS & STANDARDS

6. LRP Featured Products • Bi-Level Stairwell Fixture with Occupancy Sensor • Hotel Bathroom Lighting Control System (LCS) • Integrated High-Efficiency Lighting Systems • Retrofit Energy Efficient Downlights

7. Bi-Level Stairwell Fixture Product: Line of Bi-Level Fluorescent Fixtures with an integrated ultra-sonic motion sensor that dims lamps to save energy when stairwells are unoccupied.

8. Reduces energy use in stairwells virtually 24/7. • Provides life-saving light when building occupants need it for emergency egress. • Easy installation and even easier to operate. • Designed to provide the proper amount of light required by local and national code officials. • Applicable to new construction and retrofit projects. Bi-Level Stairwell Fixture Benefits of Technology

9. Bi-Level Stairwell Fixture Accomplishments To Date • IFMA/LBNL team: • Recruited four test sites. • Researched NYSERDA work. • Worked with LaMar. • California test sites: • Three installed. • One more underway.

10. Bi-Level Stairwell Fixture Code Issues: • Low power level provides the minimum 1 fc at each site as required by code. Full output level provides around 3 fc. • ANSI recommendation to increase national requirement to 10 fc is on the horizon. Local code adoption may follow. • Electrical permits and Fire Marshall approval is required in some local jurisdictions.

11. Bi-Level Stairwell Fixture Initial feedback from first two test sites: • Chiron Campus Building ‘M’ (tour afterwards) • Replaced circlines that provided inconsistent light levels ranging from .08 to 20 fc in their stairwells. • Evans Hall at UC Berkeley • Replaced 40-watt T-12, 2-lamp fixtures. • Estimated savings is 50 to 80 percent of the original stairwell lighting use. Occupancy stairwell usage and energy use data collection is ongoing. • Both facility managers seemed pleased with the installation and lighting levels.

12. Bi-Level Stairwell Fixture Economics • IOU yearly energy savings ($.155/kWh): • 2-lamp--$50-$100; 1-lamp--$25-$50 per fixture. • New buildings: 1-3 yr paybacks. • Retrofit 3-7 years. • MUD yearly energy savings ($.105/kWh): • 2-lamp--$30-$70; 1-lamp--$16-$33 per fixture. • New buildings: 3-6 yr paybacks. • Retrofit 3-8 years.

13. Bi-Level Stairwell Fixture • Product is commercially available from LaMar Lighting. • Incentives may be available from utility under the Express Efficiency Program. • LaMar is offering special CA pricing. • Facility managers may want to revisit stairwell light levels. • LRP team will continue to gather data at the four test sites and publish the results in summer 2004.

14. Bathroom Lighting Control System Product: A customized hotel guestroom occupancy sensor with built-in LED nightlight. • Built-in nightlight illuminates room whenever overhead lights are off. • Energy efficient, super-bright LED. • Designed for hotel rooms and semi-public spaces. • Adjustable time delay from 15 minutes to 2 hours.

15. Bathroom Lighting Control System Demonstration at the Sacramento DoubleTree • LBNL developed the product and performed the pre-and post- monitoring for 15 rooms. • The Watt Stopper Inc. manufactured the product and provided technical support. • DoubleTree staff installed the LCS in more than 400 guestroom bathrooms. • PIER LRP and SMUD provided funding.

16. Bathroom Lighting Control System Results from Demonstration at the DoubleTree Bathroom lights were left on after the guests left the room Percentage of Lamps “on” Time of day Source: Lawrence Berkeley National Labs

17. Before the sensors were installed, some lights were left on for extended periods when the room was unoccupied. Source: Lawrence Berkeley National Labs Bathroom Lighting Control System Results from Demonstration at the DoubleTree

18. Bathroom Lighting Control System Results from Demonstration at the DoubleTree On average, the sensors reduced overall energy consumption by 50%! Source: Lawrence Berkeley National Labs

19. Bathroom Lighting Control System Results from Demonstration at the DoubleTree • Total energy savings just under 50%. • Most of the savings resulted from the elimination of infrequent, but energy intensive, long usage periods (> 4 hrs on). • Simple payback dependent on retrofit, but can be substantial. • Rebates available from utilities under Express Efficiency Program. • Very positive occupant feedback on nightlight feature.

20. Bathroom Lighting Control System Less than 2 year SPB possible!

21. Bathroom Lighting Control System • The Watt Stopper has fully commercialized the product (WN-100). • LBNL awarded the 2003 Flex Your Power Energy Efficiency Awardfor the nightlight sensor efforts. • Other California utilities (including SCE and PG&E) are currently considering demos in their regions. • LBNL soon will initiate Phase 2: Bathroom Smart Fixture in cooperation with Lithonia Lighting.

22. Integrated Lighting System Product: A high-performance lighting system with integrated sensors and controls for classrooms and training facilities. ‘Basic’ Option • Direct/indirect Fixtures with super T8 lamps. • Uses 96% reflective material to improve fixture efficiency. • Two rows of fixtures for maximum savings. • Manually switched rows for daylighting control. • Ballast factor managed to maximize savings with two rows. • One source for layout, pricing, and warranty.

23. Integrated Lighting System ‘Better’ and ‘Best’ Options • Dimming with teacher/instructor control switch to lower light levels (5 fc) for audio/visual (A/V) presentations. • Addition of photosensors to provide automatic daylight control. • Third row of fixtures added for better uniformity on desks, ceilings, and walls. • Ballast factor managed to maximize savings with three rows.

24. Integrated Lighting System • Switch “Up” = general classroom mode. • Switch “Down” = A/V or reading mode. • Switch in the front of classroom • Easy to use. NOTE: All 3 lamps can not be on at the same time.

25. Integrated Lighting System General Up Light Mode Audio Visual Mode

26. Integrated Lighting System A total of nineteen test classrooms and one office meeting room have been installed in California and monitoring is underway. Energy Use Before 1.75 watts / sq foot After 0.85 watts / sq foot

27. Integrated Lighting System Initial Feedback from Test Sites • Energy Usage: .85 watts / sq foot or approximately one-half the energy of the control classroom. • Desk-level lighting: ~35 fc in the far corners to ~ 90 fc under the fixtures. • Vertical foot candles at 4’ above the floor: 20 - 35 foot candles for the 2-row rooms and 26 - 36 foot candles for the 3-row rooms. • Instructors said they liked the "calming feeling" of the indirect/direct lighting. Most use the downlight mode (~ one hour per day).

28. Integrated Lighting System Economics • The 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. The system pays for itself, by delivering: • Reasonable first cost and lower energy usage. • Better quality lighting and more user control. • Flexibility with different options and one stop shopping for integrated system.

29. Integrated Lighting System • Finelite Inc. manufacturers and warranties the system. • The Watt Stopper provides the occupancy sensor and the photosensor to Finelite. • Osram works with Finelite to provide warranty and service. • Low voltage wiring option to support retrofit installations. • The project team is communicating with the CHPS program for school designs and the state architect’s office.

30. Retrofit Energy Efficient Downlights Product: An energy efficient plug and play downlighting system using CFLs. Expected Applications: Commercial, residential, and institutional buildings - retrofit applications. LRP Partners: LBNL, Lithonia Lighting, and SMUD.

31. Retrofit Energy Efficient Downlights Highlights • Builds off an existing product developed through PIER for downlighting in new residential construction. • LBNL is working closely with end users and the manufacturer to evolve the low cost system. • Product is easy to install where access is limited. • The system saves on labor cost and reduces energy costs.

32. Retrofit Energy Efficient Downlights System approach to optimize performance and minimize cost: • Two-lamp ballast cuts ballast costs in half. • Simplified materials with “optical heads” instead of individual fixtures. Photometrically superior light output • High-quality, high-output electronically ballasted CFL. • High-efficiency, low-glare reflector optics.

33. Retrofit Energy Efficient Downlights Builder friendly to reduce installation labor costs: • Plug and play wiring greatly reduces number of costly wire-nut connections. • Quick, simplified and flexible optical head mounting. • Thermal protected electronic ballasting to ensure reliability. • Ballasting placed in locations that can be thermally optimized.

34. Retrofit Energy Efficient Downlights Single modular unit. Two downlights with a “visible” cover plate over ballast on room side.

35. Retrofit Energy Efficient Downlights Double modular unit. Four downlights with a “visible” cover plate over ballast on room side.

36. Retrofit Energy Efficient Downlights No visible cover plate is required for the system. The unit consists of a conventional downlight pan with a remote downlight.

37. Retrofit Energy Efficient Downlights Achievements To Date • Product installed in 40 homes in the Sacramento area. • The installations have shown labor savings and contractor acceptance, particularly in multi-story dwellings where access is limited. • Commercial and residential retrofit product focus of current PIER LRP work. • SMUD helping to recruit more test sites.

38. Lighting Research Program Information on the LRP products is available in the PIER LRP packets and on the following web site: www.archenergy.com/lrp