U.S. Department of Energy - Energy Efficiency and Renewable Energy
Building Technologies Office – Information Resources
Text-Alternative Version: The L Prize-Winning LED A19 Replacement—What Commercial Building Owners/Operators Can Expect in 2012
Below is the text-alternative version of the "The L Prize-Winning LED A19 Replacement—What Commercial Building Owners/Operators Can Expect in 2012" webcast, held January 18, 2012.
Theresa Shoemaker: Welcome, ladies and gentlemen. I'm Terry Shoemaker with the Pacific Northwest National Laboratory, and I'd like to welcome you to today's webcast: the L Prize-Winning LED A19 60 Watt Replacement – What Commercial Building Owners/Operators Can Expect in 2012. Today's webcast is brought to you by the U.S. Department of Energy Solid-State Lighting Program.
We're very happy today to have our speakers as Todd Manegold of Phillips Lighting and Kelly Gordon of the Pacific Northwest National Laboratory. At this point, I will turn this over to Kelly Gordon. Thank you.
Kelly Gordon: Thank you very much, Terry. I'm Kelly Gordon, and I've been with PNNL for about 11 years. I am a Program Manager here supporting DOE's Solid-State Lighting Program, and I've been involved with the L Prize contest throughout its development and implementation. I'm joined today by Todd Manegold, who is the Director of LED Lamps Marketing, North America for Phillips Lighting. He joined Phillips in 2008 and is currently responsible for managing the grilling portfolio of LED retrofit and lamps.
I want to welcome everyone who has dialed into the webinar today and thank you very much for your patience as we get up and running. This webinar was targeted to - - especially to the commercial building sector, and we got a very good response. There are several categories of participants that I'd just like to recognize and welcome. First of all, members of DOE's Commercial Building Energy Alliances, would like to - - were participating in the webinar and very much like to welcome CBA members, partners of the DOE Federal Energy Management Program, or FEMP, as well as general services administration building owners and operators. We also have strong participation from electric utilities and energy efficiency organizations that implement a range of energy efficiency programs; lighting manufactures, lighting distributors, and other professionals from the lighting energy efficiency and building management professions. I'd also especially like to recognize our L Prize partners, these are 31 utilities and energy efficiency organizations across the country that has signed a Memorandum of Understanding with the Department of Energy, specifically to support and provide feedback to the L Prize Program. These partners have been fundamental in helping to shape the L Prize Contest and to evaluate the entry that we're going to be talking about today. So thank you very much to our partners.
So today, these are the topics that we're going to cover. First I'm going to provide an overview of the current levels of performance that we see in LED A19 60 watt replacement lamps. Then we'll look at the L Prize performance requirements and the testing that we applied to the L Prize entry and, included in that, I'll address the role of the partners in field assessments and in their looking forward to promotion of winning products. Then I'll be turning it over to Todd Manegold who will give us the update directly from Phillips on the market roll-out of this new product, looking specifically at target applications and fixture types and tools to gauge the cost effectiveness of the product.
Now first of all, why are 60 watt bulbs so important? I mean, this is the light bulb that typically when you think of a light bulb, or when a light bulb goes off in your head, this is the one that it is. It is a 60 watt A-19, sometimes we call it an omnidirectional light bulb or lamp, basically emits light in all directions. Certainly the most common household bulb, we all have these in our homes, but also used in a range of different commercial applications. We see them commonly in hotels, restaurants, retail, showrooms, healthcare, assisted living, higher education, anywhere where you would have a need for dimming capability you might see this type of lamp - table and floor lamps, pendants, wall sconces, a range of different fixture types that this light source continues to be very common in.
Now there are energy efficient alternatives, an increasing number of energy efficient alternatives to the traditional incandescent lamp. We have halogen lamps that are marginally more efficient, marginally more expensive than the basic incandescent. Halogen improves the efficacy of light output in a very similarly shaped light bulb package. They last a little bit longer typically than traditional incandescent. Of course we have compact fluorescent lamps, CFL, the technology that has been around for some time really has matured and it is a very cost effective, very energy efficient technology. They last 8-to-10,000 hours, so ten times longer than an incandescent. There are some issues with compact fluorescents, there's sometimes a run-up time before they come up to full brightness. There can be issues with dimming compatibility and color quality. And then, of course, we have a growing number of LED replacement lamp products and there are some very good products in the LED category. What we certainly can say is that not all LED products are created equal. There is pretty variable performance when you look across different products in terms of the light output, color issues, dimming issues and so it takes some research to find the products that will meet the needs of the application.
So how do we get our heads around what is available out there in terms of LED replacement lamp products today? There are a couple of sources that I've looked at and wanted to share with you here. One is the DOE LED Lighting Facts Program; and if you haven't visited this site yet, I would encourage you to do so; it's lightingfacts.com. When you go there you will see a listing of now more than 4,000 products. These are all LED replacement lamps and complete fixtures, or luminaires that have been listed by the Lighting Facts Program. What does it mean to be listed? You don't have to meet any specific performance requirements, but what you do have to do is to back up your performance claims with a test report. You need to have actual testing from an accredited independent laboratory that verifies your performance. So what I've done is pulled all of the products that are currently listed on Lighting Facts in this omnidirectional lamp category, so light bulbs, and screw in replacement light bulbs that emit light in all directions. This graph shows us the output, light output in lumens on the vertical axis, and efficacy in lumens per watt on the horizontal. So you see the scattering of blue dots there, that's all the products that are listed there, its 150 some and they certainly range in both output and efficacy. The L Prize winner there is above 90 lumens per watt, very efficacious, and more than 900 lumens. So how does this compare to incandescent since most of us still think in that incandescent wattage? Well, a 40 watt incandescent light bulb is around 400 lumens, a 60 watt would be more like 800, a 75 watt above 1000, so you see that the L Prize product is in between a 60 watt and a 75 watt and the vast majority of those existing LED replacement lamps are below a 60 watt output, many of them are below 40 watt.
Another very important consideration with replacement light bulbs is, how does it look, how does it do on color? So we look at correlated color temperature, or CCT, that's the color appearance. When you look at the light bulb, or look at the light coming out of it, it should be white. Well, there's different shades of white as we all know. Some whites are a little more to the yellow or the warm colors, amber colors, and some are more towards the blue end of the scale; what we would call kind of a cool light. So we look at it on that scale. The lower numbers on that CCT scale are the warmer color appearance. And then on the other axis there you have color rendering index, or CRI. That is an indication of how do things look when they are illuminated by this light source? Do the colors look right? And that is out of a scale out of 100 with 100 being either daylight, sunlight, or an incandescent light source is by definition 100. So you can see that the L Prize product is above 90 CRI, that's very good, and it has a warm color temperature between 2700 and 3000 Kelvin.
Okay, so that was the lighting facts listed products. Another good place to look is the Energy Star Qualified products list. The Energy Star Program does have a qualification for LED replacement lamps; there are currently more than 400 total products that have been qualified. Most of those are what we would call directional light sources, so it's a flood lamp or a reflector lamp, that type. When I checked the list last week there were fewer than 20 that were this A type or omnidirectional lamp, and of those less than half were 60 watt replacements, so meaning that they have at least 800 lumens light output.
In this next chart I provided a comparison of the Energy Star requirements and the L Prize requirements, and I'm not going to go through this line by line, but the main point here is that the L Prize requirements were set at a higher level than Energy Star. And that's intentional, Energy Star it sets kind of minimum performance levels for good energy efficient quality products. The L Prize served a different function which was to provide a stretch goal for the industry to say, "If we push this technology, can we get very high efficacy and exceptional performance on those quality metrics, light output, color quality, uniformity, etcetera?" So in each of those cases, on the basic performance metrics, the L Prize requirements were higher. So the L Prize Contest, Phillips Lighting submitted 2,000 samples, and many of you may have seen this picture at the time in the press when the entry first came in.
In September 2009, they sent 2,000 samples of that product to DOE and those were immediately sent off for photometric testing by qualified testing laboratories using the industry standard test procedure LM-79. There were 200 samples that were tested at that time and the table here provides you, for comparison, the L Prize requirement, and then what was the result for the Phillips' product, and those numbers are averages for the 200 units. So they were able to exceed each of the basic requirements of the contest according to the short-term testing.
But that was not all. We immediately moved those same 200 products into long-term lumen maintenance testing. We wanted to see how long they last and how long do they last under an elevated temperature environment. So they were tested at 45 degrees Celsius, that's 113 degrees Fahrenheit, in this apparatus that is shown there in the photo. It's basically a large box that holds it at a certain temperature. The lamps operate continuously, that's an integrating sphere, the measurement device underneath, and it moves automatically on a track and takes periodic measurements of each lamp. So the minimum test period that we establish for the contest was 7,000 - - was the maximum output point of the lamps plus 5,000 hours, 7,000 hours of continuous run time later was when we evaluated the performance, and we are continuing to run these lamps at this time. They've now clocked more than 12,000 hours. So the results are given there below. The L Prize requirement for lumen maintenance was the projection for 25,000 hours has to be at least 70% of the initial light output. The Phillips result based on those 7,000 hours of data that we collected was that the projection would be 99.3% at 25,000 hours, so much higher than the requirement. We also looked at color maintenance because we want to make sure that the color is not going to shift over time. We don't want it to get pinker as time goes on or greener or more purple and so we want to make sure that it stays a white light source. And the performance of the Phillips' product was well within the requirement for that color maintenance over time. So that was the long-term testing.
We also conducted stress testing on the products to see how it would do under relatively extreme conditions. This is about giving some assessment of the durability of the product, so there were a number of stressors applied to the products simultaneously. There was high and low temperatures cycling; that's going from temperature extremes, very low temperatures to very high temperatures. The picture that you see there shows the lamps mounted on a table top; this thing can tilt and shake and apply quite strong vibration g-forces to the products. We also subjected them to power wave form distortions, so different power quality aspects that they may have to endure, and rapid cycling, rapid on/off cycling. The Phillips' products that were tested there, about 15 there in the test sample; there were no failures among those products. As a benchmark, we also included high quality CFLs in this test and all of the CFL benchmarks failed over the course of the testing, at different levels of stress. But none of the Phillips' products failed.
Now, this is where our partners come in, field assessments. Fourteen of the 31 L Prize partner organizations, again utilities and energy efficiency sponsor organizations conducted field assessments, and this was a great role for them. They know their customers, they know their customer facilities, and they were able to identify various locations in which to locate these Phillips L Prize candidate lamps.
So we ended up having more than 1,300 lamps that were installed out in the field, 40 different locations and they really range - commercial offices, retail, institutional, health care, hospitality, and residential applications. And the whole purpose of these field assessments was to look at energy use, verify the energy performance and the lighting system performance. Sometimes things are different when you go to put it in in the field on existing circuits and with existing systems, and we wanted to see how it did - reliability in the field, customer acceptance, and the opportunities for future cost effective deployment of these products as an energy saving measure.
So those field assessments were completed in the summer and fall of 2010 and various site measurements were taken by the L Prize partners. Some of them did a luminance measurement so it's a measuring the light output on the surface compared to what was in there before. They also requested feedback from the users and the occupants of the spaces to see how they liked it and in some cases did power measurements and a variety of other indicators. Just some of the results of the feedback from users, "Would you recommend this type of lighting to others?" Three quarters of the respondents said, "Yes", and I should say the number of respondents was around 1,000 to 1,200, depending on the question. "Is the light too dim, too bright, just right?" Two-thirds of them said, "It was just right." Similarly on the issue of, is the color good, is it too cool or blue, is it too warm or yellow? Two-thirds said, "Just right".
So on all of the requirements of the L Prize 60 watt replacement category, the Phillips product did meet those requirements in terms of light output, efficacy, color characteristics, life as well as the stress and field assessment tests.
And the award was made to Phillips in August of 2011; there was an awards ceremony on Capitol Hill. Senators Murkowski and Bingaman of the Senate Energy Committee were in attendance at that ceremony, as well as the representatives from Phillips and DOE and the L Prize partners.
And so now, that brings us to today when the winning product is going to be coming to market very, very soon. Now you see here that the photo of the production ready version of the product, it's been streamlined and looks ready for prime time.
We've been continuing to communicate very closely with the L Prize partners on how this product will work into their energy efficiency programs, and that's - - incentives are an important part of those programs but also cooperative marketing with retailers, promotions to their customers, direct contact with the commercial and residential sectors in their territory. This map has what we're aware of now, and I know there are already a few more that we've learned about in the last couple of days. So if you look at your area of the country and your state, your local territory, and see what might be available and there should be a growing number of them soon.
At this point, I am going to turn it over to Todd Manegold of Phillips who is going to tell us more about this exciting product. Todd?
Todd Manegold: Thank you very much, Kelly. Thank you everyone for spending a little bit of your afternoon with us. We're very excited to introduce the L Prize award winning light bulb, which is the most efficient 60 watt bulb you can purchase. So we'd like to go through a little bit of the performance of this specific product and highlight where it makes sense. So in terms of the performance of the product, the product has 940 lumens, which is 17% more light than other LED 60 watt equivalents that are on the market today. It has longer life and it consumes less energy, so this product actually only consumes about 10 watts, which compared to the traditional 60 watt incandescent lamp is an 83% energy savings. And this particular product was designed for the applications in the United States and will be assembled in the United States.
So not only does it have more light, consume less energy and have longer life, it's a high quality product that delivers lighting without compromise. So in addition to the features we've already mentioned, and this is something Kelly referenced previously, it remains the same color of light over the lifetime, and it also has a very CRI content which will actually bring colors and make them show up more vivid, and we'll talk about why that's important in the applications in the slides to come. From an environmental perspective it contains no mercury, which is a feature of most LEDs, and it also has a 360 degree light distribution giving an effect that people are used to when they are using typical incandescent lamps today.
So where are these lamps used? They're used basically everywhere and this is something, again, that Kelly referenced earlier. They're used in hotels and restaurants, in retail, in government, education and commercial facilities and the number of attendees that are on the phone today, we would argue that pretty much every one of your buildings would have one of these lamps in it in some location.
Now each of these particular segments has different requirements. In a hotel, ambiance is important. So the ability to have the light bulb be dimmable and create a warm color temperature and a high CRI create an atmosphere that people are used to and comfortable with. In retail, it's about image and presentation, again the features of having a high CRI make the colors vivid, and it's an energy efficient product, meaning the stores can actually save money in operations. From a government and education perspective, the energy efficiency and the long life make it a maintenance savings for everyone. And similarly for commercial applications, the functionality of this product, meaning it's dimmable as well as energy efficient, make it a viable application for such uses.
But within these spaces there are lots of different applications where the product could be used, and we have a comprehensive list of applications on this particular slide. What we've tried to highlight the areas that we think are the sweet spots for this particular product, and it's the products - - it's the spaces were the product is on all the time. So if you look in a reception area or common space in a lobby, those are places where lighting is on 24/7 and is very difficult to interrupt the space. Similarly with an elevator, it's a space that's constantly used and the ability to actually undergo maintenance in a space like that can be difficult. And at the bottom, you actually see refrigeration and kitchens. This is a place where CFLs have struggled; the cold environments that are a perfect place for the LED to be used and to minimize the amount of maintenance that might be associated with other technologies.
So what do I need to look for? Well, if you have fixtures that might look like some of these particular products, these would be appropriate uses for the L Prize bulb. Whether it's a downlight or a wall sconce or a table lamp, all of these are places where we have found applications for the L Prize bulb.
And so what we'd like to do for the next coming slides is actually walk you through some of the test installations that were done previously and show you the economic savings that could be delivered with this particular product. So in a hotel or common space, this particular product replaced a 67 watt lamp, and you actually see over that particular test period the savings that were realized and that the payback can be less than a year. Similarly in a different common space, you actually see that the payback is slightly over two years and this is compared against the CFL. So that we've seen that people have questions about whether or not LEDs are ready to replace, not only incandescent, but CFLs and in the right application it is absolutely true that this product could be a viable substitute and deliver financial savings for the user.
In the next slide, we talked about cold spaces earlier, and this is an enclosed fixture that may not be appropriate for every space, but in a refrigerator or a freezer application it's a perfectly suitable application for this particular lamp. And when compared to 100 watt lamp, in this particular case, you see a very fast payback. And in this particular case it is not something that's used 24/7, it's used about 12 hours a day, which of the working period of this particular application, and you still receive a very viable financial benefit.
In Kelly's slides, we actually referenced this particular setting, which was the Merchandise Mart in Chicago. So in this particular case, energy savings is critical because it's a space that is quite large and any savings can contribute to the bottom line; however, it's also a space where image and representation is actually quite important. So not only did this product deliver on both, it actually - - they actually took it one step further.
So in scenario one, on the top of this slide, you actually see a one for one replacements,\ where the payback was slightly over a year. However, in scenario two, because of the light output of this particular product, they were actually able to reduce the number of lamps per fixture and still deliver what people call, the just right amount of light. And in this particular case the payback becomes a no brainer for people because it's less than one year.
As we move forward, there are applications where energy savings is not the most paramount aspect of the setting. So in a museum, the display and the presentation of what is on display is crucial. In this particular case, the features of the L Prize and the CRI and the ability to deliver light and color, the way it's supposed to be perceived, is critical. In this particular case, the L Prize was perceived as a success, but you can see here the payback wasn't quite the same as some of the other applications that had the much longer times of use in maybe 24/7 operations. This is a place where it's used selectively, but we wanted to point out that there are multiple reasons to use the L Prize, energy savings being a very big piece of it, but the high quality light is actually critical for some applications, and it is a viable solution for those as well.
So we've gone through a couple of calculations for you and we wanted to highlight what this particular product does. It's a high quality product that delivers light that's basically unparalleled to people in the sense that it gives more lumens, longer life, and less energy than any other product on the market. It provides a very sustainable solution for people who are looking to achieve such goals in their particular operations. The product will be available in February 2012. If you actually contact your local distributor, they have been given the information to take orders for this particular product. And once again, for those who are with the government, this product will be assembled in the United States and qualify for such programs. At the bottom of the page, we have actually provided two links for you. The first link is a link providing you updates on the L Prize and it's status and availability, for those who are interested please sign up. And the second link is actually a calculator so you can do your own calculations and determine how this particular product could be used and the financial benefit that it would give your particular organization.
So with that, we conclude our particular presentation and we would be open for further questions.
Kelly Gordon: Okay great, thank you very much Todd. This is Kelly Gordon again, and I will just go back to my slide set again to give you another potential resource for questions. So in addition to the links that Todd has provided that take you directly to Phillips Resources, if you have additional questions about the L Prize that you would like to pose to us, to the DOE team, this is the email address where you can send questions in.
I believe we have a number of questions that have come in online, and so I am going to start working through those in the time that we have remaining. I will answer the questions that I can answer and send some over to Todd as well. There were several questions that were about the testing. Why was the test temperature so high? And that is a very good question because often you see lighting products are rated for light output and other characteristics at 25C, or basic room temperature. We decided to test it at a higher temperature because in some of the fixture types where your basic 60 watt incandescent lamps are used, it can actually get very hot in those fixtures - if it's a totally enclosed fixture, if it's a recessed downlight that's in an insulated ceiling, for example. And we've seen this in the past with CFLs, basically anything that has electronics can get cooked if it's too hot in the fixture. And so we wanted to put it through its paces in an elevated temperature, and in 45C is what has been measured in certain fixture types.
Were there any failures of the 200 that were tested? This is I assume with regard to the long-term lumen maintenance testing. No, and those lamps continue to operate and have accumulated more than 12,000 hours of operation now. We will be publishing more details on the results of the lumen maintenance testing in the next month or so incorporating that more recent data.
Okay, this maybe a question for you Todd. Is there a disposal cost or is the product recyclable?
Todd Manegold: So this particular product actually does not contain mercury, which is a common concern of the CFL products, and so it would have - - it would not have the disposal cost associated with the hazardous waste of typical CFLs today.
Kelly Gordon: The next question is: Why were the color temperatures limited to 2700 to 3000 K? That - - those values are what was put into the legislation that established the L Prize Contest. This was part of the Energy Independence and Security Act of 2007, and those values were specified there. The intent of that was to provide a light source that is very comparable to the 60 watt incandescent, and those are warm white products. And as we know with LEDs, many of the early LED products were very high color temperature, very cool light, very blue, and that may be fine for some applications, probably not as much for the type of residential or residential style fixtures where we would most commonly use these light bulbs, so that's why it was restricted to warm white.
That relates to the next question: What are CCT and CRI of the typical 60 watt incandescent? Incandescent is usually about 2700K and CRI, by definition, is 100 or close to 100, it is the reference source.
Okay, the next question: At what ambient temperature was the 910 lumens at 9.7 watts measured? So that was the initial photometric measurements, those are done according to the LM-79 test procedure that is done at 25 degrees C, room temperature.
And then: How is the light output affected by temperature? So the testing that has been going on in the lumen maintenance test apparatus, again that's at 45C, and the light output relative to the - - what was measured in the LM-79 testing has remained the same or gone up. Now we do see if the temperature goes down, output goes up. There is - - LEDs like the colder temperatures, so light output will go up somewhat with colder temperatures.
Would you have anything to add to that question, Todd?
Todd Manegold: I don't think so. I think you mentioned that the previously, basically, that the 2700 Kelvin temperature was the appropriate place because it most closely replicated what an incandescent lamp is producing today.
Kelly Gordon: Right, right. Okay, question about the competition. Have other manufacturers submitted products for L Prize testing? No, the Phillips entry was the first and, to date, only entry in the competition. There may be future categories in the L Prize Contest, but at this point the 60 watt category is the only category in which an entry has been received and an award made.
Okay. Let's see, additional questions: What does qualified mean, what criteria? I'm not sure if I know which - - what that means. Oh, qualified for might be for, for lighting facts or for Energy Star, qualified for Energy Star means that it has met all the requirements of the Energy Star Program and those have been verified. Qualified for lighting facts, again means that it has a test report that backs up the product performance claims.
Questions about the field assessments: Do the field assessments include performance with various dimmers and dimming controllers? Yes, there were dimming applications that were undertaken in the field assessments, and this was actually a really useful area of feedback from the field assessment partners. They were able to identify issues with dimming and in some cases there were problems with the dimming performance and with the - - particularly the color of the lamp under dimming. That feedback was provided back to Phillips and the dimming circuitry improved in the production version of the lamp. Now several of the partners that undertook those field assessments have now seen the production version of the lamp and have assessed its dimming performance and indicated that it is greatly improved.
Okay, so the question for you, Todd, on Energy Star: What is the status of the Energy Star label on this L Prize bulb?
Todd Manegold: So the product is actually undergoing further testing with Energy Star. The product will have an Energy Star status in the second quarter. Do you want me to go through the rest of these questions Kelly?
Kelly Gordon: Sure, do you want to take the next one?
Todd Manegold: Yeah, sure. There's several questions here on, related to the same topic about retail pricing. The MSRP for the L Prize is slated at $50. That particular price will be - - will vary from region to region depending on the level of subsidy associated with particular utilities. And as you can see, as we presented earlier, there are many utilities who are contributing to this product and as it begins its national roll out, we anticipate and do expect more and more utilities to come on board. It's hard to give a firm number because the utility numbers actually vary quite significantly from region to region particularly as you have different utility rates in those particular areas.
Okay, let's see, those are most of the questions right there, Kelly.
Kelly Gordon: Okay, there was a - - there is a question about the time periods beyond 7,000 hours. Is Phillips planning to publish testing for time periods beyond 7,000 hours? Can you answer that, Todd?
Todd Manegold: Most of the testing for this particular product is being done in conjunction with you and the DOE, so I think we would jointly make those pieces of data available when they're actually completed.
Kelly Gordon: Right. And as I mentioned, we are planning to publish a paper on the results of the lumen maintenance testing. It'll provide more detail on the overall approach to lumen maintenance testing used in the L Prize and the results to date and how that data was used to make a projection. So that will be coming out in the next couple of months.
There's also another question: Is there a national stock number being assigned to this product? That's a question for you, Todd.
Todd Manegold: I'm actually not 100 percent familiar with that particular term. In the - - the distributors who support Phillips product will have their numbers associated with it and our particular product number is in the process of being set up with all those particular people so…
Kelly Gordon: Right, and the link that Todd provided at the end of his slides will get you to the network of Phillips' distributors. You can find more information there. A couple more questions have come in. We have a few more minutes. There's a question about the appearance of the lamp: Along the same lines that consumers have thought that CFLs look strange, has there been any testing or is there any data about what consumers think of the LED A-19 bulb when it's unlit, for example in its packaging? That's a very good question because of course this product has a yellow appearance; it doesn't look white when it's not lit. And I've seen on some of the Phillips packages of the earlier related product, the AmbientLED that you may have seen in some of the retail stores, that there is an indication on it that says, "It's white when it's lit," so you don't think that the yellow is what it's going to be. So that certainly is something different and we have not collected any data about consumer preferences in this area.
Has Phillips done any of that work, Todd?
Todd Manegold: We certainly make it abundantly clear to people that it is a white light that is produced from this particular product and in consumer testing, that we've done, not only in the United States but globally, it is not an overwhelming deterrent for people to try the product. And the best way to actually demonstrate the product is when it's on, and that's what we would hope and expect people to actually do with the product.
Kelly Gordon: Right. So I would say along with the increasing variety of energy efficient light sources that we have, there is going to be variation in how they look and it will give people perhaps more choices. And some people may like it and some may not, but hopefully they will have choices that where they will find something that they do like.
Another question was: At how many hours is the lamp expected to hit L70 or hit that 70% of initial light output? Now we don't know for sure, there are - - there is an industry standard method now for projecting life. So basically you take the data that you have collected in the first 6,000 hours or 10,000 hours or however much time you have, but at least 6,000 hours, and you use that data to project out to the 25,000 hour period. Now as indicated, the Phillips' products that were submitted to the L Prize and that we tested and have continued to test, when we applied that projection out to 25,000 hours, it was still at 99%, above 99% lumen maintenance. Now I did notice in your materials, Todd, that Phillips has adjusted the rating to 30,000 hours from 25,000 hours.
Todd Manegold: Correct.
Kelly Gordon: Can you say a few words about that?
Todd Manegold: Yeah, I mean based on the testing that's been done by the DOE and our testing internally of our product, we're confident that this product could last for 30,000 hours and that's why…
Kelly Gordon: And that means above 70%?
Todd Manegold: Yes absolutely, and that's why the lifetime has been extended for the commercial product that will be released.
Kelly Gordon: Okay, Todd, you see the next few questions in front of you? Could you…
Todd Manegold: Yes. Yes I do
Kelly Gordon: Okay.
Todd Manegold: There's some questions about downlights and heat transfer. I certainly - - not every application is always appropriate. If it's a very tight downlight, that could be - - there's a lot of heat trapped in that particular area, it could compromise the life of the particular product, so we would certainly ask that people inspect the application before just putting it in at any place. But assuming there's space in there and the ability to have air movement in that particular space, it would be an appropriate application for this lamp. We would not recommend it be used in a completely enclosed fixture at ambient temperatures; however, we actually did show an application where it was enclosed in a freezer-type application, which may be more appropriate.
Let's see, so there's some questions about dimming. This particular product to actually have the wide range of dimming compatibility. As all LEDs, there's always a need to be tested and what actually a load can be actually accommodated for a particular dimming system, so it's hard to give a specific answer to that particular question.
So there is a question here about omnidirectional light and how that compares to the incandescent light bulb. This product was, in particular, designed to replicate the light that people are used to with an incandescent product. So that's not only the quality of light, the color of light, but it's also the delivery of light, in this particular case replicating the omnidirectional nature of an incandescent light bulb. So our answer to that question would be yes, it does.
Kelly Gordon: And, I'll just chime in to say that we have published in some of our materials an overlay of the distribution of this lamp compared to an incandescent lamp and it matches almost identically, and that is very much intentional. It was intended to be a very similar distribution to an incandescent.
Todd Manegold: So we just got a couple more questions in here, Kelly, and just going to jump to those.
Kelly Gordon: Okay.
Todd Manegold: So the question is about the L Prize. The L Prize is denoted, as we mentioned earlier, by its yellow caps, it's also by its white housing and it's very unique look. That's how you would actually note that it actually is the L Prize and it's with its particular three chambers. The bulbs will be UL listed. The product will not be available in a GU-24 base, it will be only available in the E-26 base. The product will be available in Canada.
And I guess the other questions are for you, Kelly.
Kelly Gordon: Okay great. There was a question: Would this product qualify for Arra Funds? I believe it needs to have 51% or more made in the USA. I believe it would because the U.S. content requirements were pretty stringent…
Todd Manegold: Yes, it will.
Kelly Gordon: …for the (inaudible) petition. Okay, Todd is confirming, yes. Has the technology improved since the L Prize samples were submitted? Will the product has the exact same specs as the sample? So, yes the technology, LED technology, has continued to improve, and that's the reason that you see that difference in the production version of the lamp where the original - - it wasn't a prototype, but it was a pre-production model had four sections and now they've gone to three sections. That's because the LEDs have continued to get more efficacious and get more light out of them for the same space, so they were able to streamline that design.
Todd Manegold: Yeah, and on that note, Kelly, I mean the initial samples that were tested had about 910 lumens, as you mentioned, and the commercialized product will now have 940, so the technology has improved and that's been incorporated into the commercialized version of the L Prize.
Kelly Gordon: Any deviation from the L Prize specs would be in the right direction; they will not be below…
Todd Manegold: No.
Kelly Gordon: …the L Prize requirements.
Todd Manegold: Everything will be at or exceeded as we talked about both from a light level and even from a lifetime perspective.
Kelly Gordon: Right. Okay, here's a question: Since these are standard Edison base how can designers use this product in initial building designs to meet IECC model energy code watts per square foot requirements? Does IECC have to use the max wattage for the fixture? That's a good question, and that is something that would face any screw in replacement lamp.
And you have indicated already, Todd that it's not going to be in a GU-24 base.
Todd Manegold: Correct.
Kelly Gordon: But this, it really is targeted at the screw in replacement market.
Todd Manegold: Yes, that's what it's designed for. There is one last question here about the comparison that was given from an economic perspective where we made a comparison to the 32 watt CFL and the light output from that versus the L Prize. And in this particular case, the L Prize actually provided sufficient light output to replicate what people were actually used to, and I don't have the exact foot candle measurements of that at my fingertips, but the way that we would measure that is whether the perceived nature of the application was impacted in any way and actually people, the positive feedback from the respondents that Kelly mentioned would suggest that the product actually delivered what it was supposed to, if not exceeded.
Kelly Gordon: Other question or a comment: It would be worth noting the extra energy savings from not having to expel energy from refrigerators and freezers. So I assume that means that not having to expel the heat or offset the heat from incandescent lamps, that's certainly true.
Any problems with bulb snatching these valuable bulbs? That's something that we discussed with the partners during the field assessments, that that was a concern that in some cases something that looks different, especially if people know that it is worth more that could be a concern in more public type spaces or say in hotel rooms, that sector. And we did look into a number of different socket locking options and there are some that are available on the market that are relatively inexpensive. That would, I guess, be something that people should consider.
Okay, I'm going to go to a few more questions, we can run - - we're going to run maybe just a little bit over the hour given that we had a somewhat late start, and I certainly understand if some people need to sign off, but we will continue to answer a few questions here. Let me just read the next one: What were the program requirements regarding acceptable changes between the L Prize lamp tested during the competition and the L Prize lamp that's actually introduced to the market? It looks different on the outside, must be different on the inside since it's now dimmable to 10%. So that I think we have really addressed earlier that it has to do with the continued improvement of LED technology. There is in the L Prize Contest, the evaluation process there is a change control policy. So in the development of any manufactured product there are changes in design along the way as you move from prototype into actual production that was planned for. The manufacturer is required to submit those changes, notification of any changes, to DOE so that it can be reviewed by the Technical Review Committee to insure that it does not negatively affect the performance of the product. As long as it is performing at or above the requirements, then it is fine, and that process was very much something that was applied to evaluation of the Phillips lamp.
Will future life projections be made using IFTM-21? That is the industry standard method that's now available just as of last year. At the time that the L Prize rules were developed, TM-21 was not yet available and so we used a non-parametric statistical approach to assessing the data that we collected over that 7,000 hour period and fitting an expediential decay curve out to 25,000 hours to make our projection. Now that the IES method is available, TM-21, that in the future is what would be used in the L Prize.
Okay, Todd, would you like to take those last few questions?
Todd Manegold: There's a couple last questions here, and then I guess we'll probably close things up, right, Kelly?
Kelly Gordon: That's right.
Todd Manegold: There's a comparison of: How does this particular product compare to other commercially available LED products, probably specifically the bulbs that are available? The bulbs that are available commercially, professionally and in retail stores are designed to meet Energy Star specifications. The L Prize was designed to meet the L Prize specifications, which, as Kelly highlighted, were much more stringent and actually took lighting and set a new standard. And so when we claim that this is the most efficient product that's available, that is because the L Prize set those particular specifications. Kelly, would you like to add anything to that?
Kelly Gordon: No, I think you answered it.
Todd Manegold: Questions about future wattages. We are working towards those particular lamp types, and they'll be available down the road as LEDs permit.
And then in terms of sales channels, this product we do anticipate to be available in the professional channel in February and likely in the retail market shortly thereafter.
And, yeah, so we would very much thank you for your time. And if we have any other future questions on - - please reach out to the local Phillips representative in your region. They can help you address questions about availability and distribution and those types of questions.
Kelly Gordon: Yes, thank you very much, Todd, and thank you to everyone who participated with us today. Again, use the resources that we've provided and the links that we've provided to do follow-up questions. We have captured all of the questions that have come in electronically and we will do our best to address those questions online at the time that we post the complete webinar. Thank you very much.
Theresa Shoemaker: Thank you for participating in today's webcast brought to you by the U. S. Department of Energy.