DOE Solid-State Lighting GATEWAY Program. GATEWAY Registry and Demonstration Reporting Template. U.S. Department of Energy November 2008

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1 DOE Solid-State Lighting GATEWAY Program GATEWAY Registry and Demonstration Reporting Template U.S. Department of Energy November 2008 Building Technologies Program Energy Efficiency and Renewable Energy U.S. Department of Energy 1

2 Disclaimer GATEWAY Demonstrations Purpose and Qualification Statement: The U.S. Department of Energy (DOE) supports demonstrations of high performance solid-state lighting (SSL) products in order to develop empirical data and experience with in-the-field applications of this advanced lighting technology. GATEWAY demonstrations focus on providing a source of independent, third-party data for use in decision making by lighting users and professionals; and this data should be considered in combination with other information relevant to the particular site and application under examination. Each GATEWAY demonstration compares one SSL product against the incumbent technology used in that location. Depending on available information and circumstances, the SSL product may also be compared to alternate lighting technologies. Though products demonstrated in the GATEWAY program have been prescreened and tested to verify their actual performance, DOE does not endorse any commercial product or in any way guarantee that users will achieve the same results through use of these products. 2

3 Overview DOE s Solid-State Lighting (SSL) GATEWAY Registry is intended to provide interested parties with information on SSL Technology Demonstrations. The Registry is open to all participants wishing to access information and updates regarding ongoing, completed site installations and analyses (also known as pilots) supported by DOE. Parties wishing to conduct their own SSL demonstration can access information on DOE s demonstration methodology and available resources, or to share their demonstration results. The Pacific Northwest National Laboratory (PNNL) maintains the GATEWAY Registry on behalf of DOE. The primary purpose of the GATEWAY Registry is to disseminate results for DOE-supported SSL demonstrations, as well as general information for interested parties. It is not intended to provide undocumented or insufficiently documented results or for the promotion of any particular SSL products. In general, information from DOE-supported SSL projects is available from the Registry. DOE also considers results from independently conducted demonstration projects for inclusion in the Registry in order to increase the general knowledge regarding SSL products and applications. Projects selected for inclusion complement DOE s supported projects, utilize DOE s methodology/reporting template or present clear, transparent and repeatable results, and are designed to accomplish one or more of the following objectives with SSL: Save energy Demonstrate cost effectiveness Meet minimum Illuminating Engineers Society (IES) standards for illumination Highlight the advantages of SSL in other areas of lighting applications, such as: o Application suitability (light output, photometrics or modeled illumination levels, mechanical fit, etc.) o Maintenance o Safety Utilize commercially or near commercially (within 6 months) available products For parties experienced in demonstrations/pilots or employing their own methodology and wishing to share their results on the Registry, DOE will consider the following elements essential in any third-party demonstration reporting: Evaluation: project evaluation should be done by an independent evaluator. Lighting measurements: the report should compare pre- and post-lighting measurements, with simulations of lighting distribution where applicable. Control for external factors: the report should identify and discuss measures to control for external factors. Photometric data: data for SSL and data/baseline for incumbent technology should be presented and compared. Qualitative lighting analysis: a qualitative analysis should be conducted. Economic analysis: the report should present a clear and transparent economic analysis, documenting any assumptions used. 3

4 I. DOE s SSL GATEWAY Demonstration Methodology DOE has developed a format for its own GATEWAY Technology Demonstrations of LED products to enable unbiased evaluation of LEDs with conventional products, and allow comparison of results across multiple projects. The methodology is outlined in detail below, and incorporated into a final report template (provided). GATEWAY demonstration projects typically consist of seven phases, some of which may run concurrently: 1) Product Selection and Matching to Host Site Application 2) Team Formation 3) Product Laboratory Testing 4) Product Installation 5) Field Measurements 6) Evaluation of Results 7) Results Reporting Brief discussions on each of these topics are provided below. Product Selection DOE recommends the selection of products that perform at least as well as those that would qualify for DOE s recently released ENERGY STAR criteria. 1 Specific parameters used for evaluation of SSL luminaires for demonstration are included in the final report template. Site Selection Site selection criteria should consider the following: Appropriateness for the specific product being considered Good visual view of the luminaires Repeatable illumination measurements Demonstration Teams A typical demonstration team includes the following participants: A product supplier; A representative of the demonstration host site; An energy efficiency organization, public energy agency, or local electric utility; An independent professional project evaluator, with expertise in lighting and field lighting measurements (may also be provided by utility or site host, as appropriate). It is important that the project evaluation role be performed by an independent evaluator, with no financial ties to the participating product manufacturers, and no financial stake in the findings of their evaluation. The use of a lighting designer/expert for assistance in the proper application of products is also critical if there is no manufacturer participation. 1 Available at: 4

5 Product Testing Products should be submitted for LM-79 (photometric) tests and if appropriate, LM-80 (lumen depreciation) tests at an independent testing laboratory. All GATEWAY demonstration products undergo independent laboratory testing to ensure accuracy of the reported results. Measurements Pre-installation measurements of the existing lighting technology should be taken, including energy usage and illumination levels over a well-defined grid. The same parameters are measured after the new light source is installed, preferably under as similar conditions as possible (or concurrently, in cases of side-by-side tests). Measurements of the existing lighting technology should be taken with new lamps following an appropriate burn-in period. Measurements are best carried out by experienced personnel. At a minimum, the following pre- and post-parameters should be measured (additional parameters are included in the report outline for reference): energy usage (or calculated energy usage based on power measurements) 2 power factor on- and off-state energy consumption (as applicable) illumination levels on all relevant planes Details of measurement planes (l, w, measurement height, etc.) as well as location and distribution of measurement points, should be noted, as well as other factors that may affect the measurements, such as ambient light levels, and correction factors used. Evaluation Demonstration evaluations should include energy and cost savings and related economic analyses of the installation of the LED light source as well as any lessons learned from users and operators of the product. 3 Economic evaluations should clearly detail all assumptions necessary for conducting the analysis, such as hours/day of lighting system use and price of electricity. Any maintenance savings estimates used should be similarly detailed and should be as realistic as possible based on either actual or referenced sources (for example, RS Means). 4 Additional parameters are included in the reporting template. Finally, some gauge of user satisfaction with the new lighting, relative to that replaced, should be included in the evaluation, along with responses by lighting experts, where 2 Note that care should be taken so that real, not apparent, power is measured. 3 For example, the degree of ease or difficulty in product installation, before and after measurement of light levels, and user comments are areas where other interested parties can most benefit from a demonstration s experience. 4 It is also important to take into account the lifetime and maintenance requirements of components other than the LEDs themselves, such as periodic cleaning, power supplies, etc. 5

6 applicable. Examples of suitably-worded survey instruments can be found on the GATEWAY Demonstration web site. 6

7 REPORTING TEMPLATE FOR SSL DEMONSTRATION PROJECTS 1) Comprehensive description of the project a. Dimensions of space or outdoor area to be illuminated b. Function of the space to be illuminated c. New or retrofit d. Tasks to be illuminated or applications e. Occupancy approximate numbers and any special needs f. Hours of operation g. Floorplan h. Any special/specific lighting requirements for the area 2) Current lighting (for retrofit projects) a. Fixture type(s), brand(s), model number(s), age(s) b. Lamp type(s), brand(s), model number(s), wattage(s) c. Ballast type(s), brand(s), model number(s), age(s) d. Product weight and dimensions e. Luminaire photometry for existing fixtures, if available f. Photos of space with existing lighting g. Number and location of fixtures to be replaced h. Connected load for existing fixtures (measured), or watts per square foot (design specifications) i. Lamps replaced in existing fixtures; fixtures cleaned, operated for at least 100 hours j. Baseline illuminance measurements i. Calibrated illuminance meter state brand and calibration date ii. Provide space plan showing location of illuminance measurements (including measurements on vertical surfaces, as applicable) iii. Date, time of day, and conditions during measurements iv. Any adjustments for ambient conditions (i.e. moonlight, light from other fixtures nearby, etc.) 3) Baseline lighting requirements and alternatives (for new construction) a. IES guidelines for horizontal and vertical illuminance b. One alternative scenario for lighting the space, based on high efficiency conventional technology i. Lamps, ballasts, fixtures ii. Modeled connected load, watts per sq. ft. iii. Modeled illuminance levels, horizontal and vertical 4) LED lighting a. Luminaire brand and model b. Luminaire photometric and electrical measurements (LM-79-08) i. Total luminous flux ii. Zonal lumens iii. Luminous intensity distribution iv. Luminance v. CCT vi. CRI vii. SPD viii. Watts ix. Off-state power x. Power factor xi. Estimated or claimed lifetime xii. Product weight and dimensions xiii. LM-80 test results (where available) xiv. Warranty or other information 7

8 c. New LED luminiares installed and tested for functionality d. Installation and maintenance issues (if any were observed) e. Actual connected load of installed LED luminaires (measured) f. Illuminance measurements i. Same calibrated illuminance meter as used in baseline state brand and calibration date ii. Provide space plan showing location of illuminance measurements should be same as that used for current lighting measurements iii. Date, time of day, and conditions during measurements iv. Any adjustments for ambient conditions (i.e. moonlight, light from other fixtures nearby, etc.) g. Photos of space with LED lighting h. Reflected ceiling plan or outdoor area plan showing locations of LED luminaires 5) Economic comparison of existing/conventional and LED lighting a. Luminaire costs b. Installation costs c. Estimated energy costs i. Cost per kwh ii. Connected loads iii. Hours of operation iv. Demand charges if applicable d. Maintenance costs i. Lamp replacement ii. Luminaire cleaning iii. Labor costs iv. Others e. Total cost of ownership/life cycle costs 6) Independent evaluator report (not needed if reporting is by an independent evaluator) a. Pre- and post-installation lighting conditions and verification of calculations and assumptions b. Other factors that may affect the measurements, such as ambient light levels, and correction factors used 7) Occupant or user survey using GATEWAY format 8) Lighting designers feedback/participation 8