- Humble light bulb helps Japan fill nuclear gap – Chicago Tribune: When the Fukushima nuclear meltdown of 2011 resulted in the closure of many of Japan’s reactors, a national campaign was started to reduce energy consumption. Since the start of 2012, 73 million LED light bulbs have been sold in Japan, comprising about 30 percent of all bulbs sold there. As LED adoption continues to increase, the country is also pursuing alternative energy sources such as solar power to help relieve the pressure caused by the shuttering of its nuclear energy program.
- Revamped Dubai park to bask in the sunshine – Khaleej Times: Al Khazan Park – which officially opened to the public on March 2 – has been revamped into Dubai’s first sustainable park. An off-grid solar power system and LED lights will reduce the amount of CO2 emissions annually by 44.5 tons, which is the equivalent to saving 1,100 trees.
- Europe to have 2.9 bn general lighting LED lamp installations by 2019 – Greentech Lead: According to an ElectroniCast Consultants report, the number of LED lights installed for general lighting in Europe will grow at an average annual rate of 58.7 percent, rising from 288 million in 2014 to 2.9 billion in 2019. The European market is predicted to grow at a slightly faster rate than the U.S. market during the same time frame. Europe is expected to maintain its leadership in relative market share throughout the forecasted period.
- SF Ferry Building Gets Makeover for World’s Fair Centennial Anniversary – ABC 7: To celebrate the centennial anniversary of the San Francisco World’s Fair, the iconic Ferry Building has been lit up the same way it was when the fair opened in 1915. Only this time the building will be lit up with nearly 1,100 energy efficient LED lights. The lights will stay up through December with two large beacons commemorating the year 1915.
Nowadays, LEDs are ubiquitous. Whether we’re talking about a football stadium, a street light, or nightlight, LEDs are used virtually anywhere lighting is needed.
What most people don’t know is that LEDs are also at the forefront of an “illumination revolution” in developing countries throughout the world.
While we live in a technologically driven society, we may not realize that access to safe and reliable electricity remains one of the key challengers plaguing more than 1.5 billion people in developing countries around the world.
Where do LEDs fit in?
According to International Finance Corporation, 2.1 million LED-solar products have been sold in countries that lack access to electrical grids.
In Africa — A growing portion of the more than 1 billion people living without reliable sources of electricity now have access to lights, thanks in part to LED technology. Nearly 5 percent of Africans without access to electricity — or some 28.5 million people — now use solar-powered LED lights.
A women in Senegal charges her cellphone using a port in her solar-powered LED lantern.
In India — Pollinate Energy has one simple mission: improve the lives of India’s urban poor by providing access to sustainable technologies, including solar lights and improved stoves for cooking.
With the help of LEDs and kerosene-free cooking equipment, local Indian communities can save money, experience reduced indoor smoke and enjoy better lights in homes and businesses.
Pollinate has already helped more than 25,000 people in Bangalore switch to solar LED lighting in their homes.
So how are LEDs changing the equation?
Eight to 10 years ago, the high cost of LEDs made them unrealistic for use in applications like this. But the efficiency of LEDs is rising, and prices are dropping, finally allowing LEDs to become a viable option.
The shift is taking place thanks to sapphire — the foundation for more than 95 percent of high brightness white LEDs. Large diameter sapphire wafers and patterned sapphire substrates contribute to greater efficiency and lower costs for LED lighting.
Incandescent lighting ruled the world for more than a century, but times have changed as the world looks to energy efficient alternatives to the incandescent bulb. In the 1970s, compact fluorescent light bulbs (CFLs) came along as the new alternative light source. Market penetration for CFL bulbs never rose above 1% of all units in the first 20 years following market introduction.
In the US, the US Department of Energy joined together with retailers and the lighting manufacturers to encourage consumer adoption of energy-efficient lighting including LEDs and CFLs. There has been careful consideration not to repeat the mistakes experienced with CFLs that led to that very slow adoption rate.
We’ve spoken a lot about the EISA phase-out of incandescent bulbs in Clearlysapphire.com. US legislators imposed strict energy efficient guidelines impacting incandescent light bulbs in the Energy Independence and Security Act of 2007. In a rolling phase-out through 2014, manufacturers stopped making 100-W, 75-W, 60-W and 40-W incandescent light bulbs. But that legislation is only part of today’s story.
Before the phase-out legislation, The Energy Policy Act of 2005 established the Next Generation Lighting Initiative, directing the DOE to “support research, development, demonstration, and commercial application activities related to advanced solid‐state lighting technologies based on white light-emitting diodes.” This legislation was an important part in establishing the DOE’s leadership in the adoption of solid state lighting (SSL).
The US Department of Energy reviewed the CFL experience and developed a strategy for leading the industry and supporting their activities for SSL. The DOE analyzed both CFL adoption and early SSL experiences since they’ve launched to determine a strategy for the initiative. You can find links to the reports below in Further Reading.
Some of the lessons learned were quite reasonable. First, coordination and collaboration between government and industry should take place at a national level. Secondly, they needed to establish standards and product testing for minimum performance and back-up of long-life claims with standard-based projections and/or guarantees. Thirdly, they needed to introduce new lighting technology in applications where the benefits were clearly established before moving on to others. They also found they needed to respond to the market and resolve problems and issues quickly. Finally, they needed to know and acknowledge technology limitations, determine and address compatibility issues with conventional lighting, deal with technology failures aggressively, and not launch a new product until performance issues were ironed out.
The parties in the initiative analyzed LED technology itself and possible bumps in the road to mitigate for consumers. They knew that consumers would have to get used to new language of LEDs. For example, the different way of communicating light brightness in lumens rather than traditional watts might cause confusion. The DOE worked with manufacturers proactively to communicate the new language of LEDs through the introduction of new package labeling, LED Lighting Facts program. They also established CALiPER program, to test a wide array of new LED lighting products for the public interest using industry-approved metrics. With a myriad of new LED light bulb offerings, consumers can find LED light bulbs that are qualified using 20 standards and procedures by the familiar Energy Star program. These proactive efforts were designed to smooth the transition and advance consumer adoption.
How successful have these government and industry efforts been?
There has been a very big change in the installed base of light bulbs between 2010 and 2012. This is mainly due to the government mandated light bulb phase-out. According to Navigant Research and the DOE, the installed base of incandescent A-type lamps (traditional light bulb shape) decreased from 65 percent to 55 percent, while CFLs increased from 34 percent in 2010 to 43 percent in 2012. LED installations in A-type lamps remained at less than 1 percent in 2012.
But taking note of lessons learned, it was interesting to see increased adoption in applications where LEDs have clear benefits — directional lighting such as lighting used in recessed lighting. According to the DOE and Navigant, installations of directional LED lamps went from 0.1 million in 2009 to 11.4 million in 2012, with an estimated 4.6% of all directional sockets in 2012 using LEDs.
Adoption is looking up for other lighting applications. Analysts expect LED-based lighting to grow, and fast. According to research firm IHS, 2014 will be a big year for LED lamps, accounting for 32% of the entire global lamp revenue.
The biggest barrier to consumer adoption in traditional A-type lighting so far is price, but the prices are coming down to more palatable levels for consumers. You can read more about the adoption of LED-based general lighting and pricing in these previous posts, Tipping Point 2: Finally, A Sub $10 LED Light Bulb and Tipping Point: Earth Day, 100W Light Bulb Reprieve and Alexander Hamilton.
For Further Reading
DOE, Solid-State Lighting: Early Lessons Learned on the Way to Market, http://apps1.eere.energy.gov/buildings/publications/pdfs/ssl/ssl_lessons-learned_2014.pdf
DOE, Compact Fluorescent Lighting in America: Lessons Learned on the Way to Market, http://apps1.eere.energy.gov/buildings/publications/pdfs/ssl/cfl_lessons_learned_web.pdf
Navigant Research for DOE, Adoption of Light-Emitting Diodes in Common Lighting Applications, http://apps1.eere.energy.gov/buildings/publications/pdfs/ssl/led-adoption-report_2013.pdf
Consulting-Specifying Engineer, Report: Lighting manufacturing leaders to shift, http://www.csemag.com/single-article/report-lighting-manufacturing-leaders-to-shift/7932342ed0c1f2c636596e85aa29d99f.html
Have you noticed a change in the light bulb aisle at your favorite store? The shelves look quite a bit different than they did a mere two or three years ago.
When Congress enacted The Energy Independence and Security Act (EISA) of 2007, they changed general lighting in the United States forever. The legislation created higher efficiency standards for lighting of all kinds from 40–100W incandescent and halogen general-service lamps. As a result, light bulbs that don’t conform to the new standard have been phased-out. Beginning in 2012, 100W lamps were required to be 28% more efficient. That standard was applied to 75W lamps in 2013 and 40-60W lamps in January of 2014 in a rolling phase-out.
So, what do consumers think? The sixth annual SYLVANIA Socket Survey found that 65 percent of Americans plan to switch to more energy-efficient lighting technologies, as a result of the light bulb phase-out. But, consumers aren’t all the way there yet. The survey revealed that 30 percent of consumers say that they plan to buy a lot of incandescent light bulbs while they’re still available and will continue using them. The 2012 survey found only 19 percent planned to hoard light bulbs. The higher 2013 number is probably due to awareness of the phase-out. Think hoarders…
The survey did have some good news about the phase-out. Since the yearly survey began in 2009, more consumers are aware of it. This year, 64 percent of consumers were aware of the phase out, compared with only 26 percent in 2009 when the survey began. And now, more than half of consumers surveyed are excited about the phase-out. This year’s survey also found that 46 percent of consumers plan to switch to CFLs, 24 percent will opt for LEDs, and 13 percent say that they will choose halogens.
For Further Reading
Sylvania, 6th Annual “SYLVANIA Socket Survey” Finds That Almost Two-Third Of Americans Plan To Switch To Energy-Efficient Lighting As A Result Of Legislation, https://www.sylvania.com/en-us/tools-and-resources/surveys/Pages/socket-survey.aspx
Clearlysapphire.com, Incandescent Bulbs Days are Numbered, http://blog.clearlysapphire.com/?p=27
Clearlysapphire.com, US DOE Reports on Efficiency and Environmental Impact of LED Lighting, http://blog.clearlysapphire.com/?p=156
The second phase of the US light bulb phase-out hit a major milestone on Jan. 1, 2014, the deadline to end production of 40- and 60-watt incandescent light bulbs. The deadline passed by with not much notice from consumers. But, the end of incandescent light bulbs sets up a new battle: LED light bulbs vs. CFLs.
A recent consumer survey by Osram Sylvania, a light bulb manufacturer, measured public attitudes about energy-efficient lighting and awareness in the US. Here are some of the results:
- 4 in 10 consumers are aware of the January 2014 phase out of 60W and 40W bulbs
- More than half (59%) of consumers are excited about the phase out, as it will help Americans use more energy efficient light bulbs.
- 46 percent of consumers plan to switch to CFLs,
- 24 percent will opt for LEDs, and
- 13 percent say that they will choose halogens.
- This year, 30 percent of consumers say that they plan to buy a lot of traditional light bulbs where still available and will continue using them.
- This is a sharp increase from the 2012 Socket Survey which showed just 16 percent said that they plan to stockpile bulbs.
Light Bulb Wars
Consumers still have time to make up their minds about their next light bulb because retailers still have supplies of 40- and 60-watt incandescent light bulbs on the shelves. Retailers like Home Depot and Lowes have enough stock on the incandescent bulbs for consumers through the spring at least. However, once the supplies dwindle, what should you buy? LED or CFL? Let’s compare.
A descendant of traditional fluorescent lights, compact fluorescent light bulbs (CFLs) contain argon and mercury vapor housed within that spiral-shaped tube. The bulbs rely on an integrated ballast to produce an electric current that passes through the mixture of gasses, exciting the gas molecules that produce the light. The time for the ballast to produce the electrical current causes that typical CFL delay when it is turned on. CFLs use 20-30% less energy than the typical incandescent and last about 9.1 years. Of course, they do contain mercury, so cleaning up after breaking them and disposing of CFLs after they burn out becomes problematic. Here’s a link to how to dispose of CFLs safely for you and the environment.
LED light bulbs
Unlike traditional incandescent bulbs, LED light bulbs generate light using a small “package” of several LEDs in a light bulb. LED light bulbs are more efficient since they use a semiconductor to emit light or photons when electricity is passed through it. LED light bulbs give off more than 80% of the energy used as light. The good news is that LED light bulbs can cut household energy use by as much as 80% and have a lifetime of as much as 22.8 years, about 2.5 times longer than CFLs.
So what do you choose?
Here’s a quick look at some of the LED and CFL light bulbs available on Homedepot.com (pricing as of 1/8/2014). While Cree and Philips LED bulbs are a bit more expensive for a single bulb, they do produce a soft white light comparable to CFLS and traditional incandescent, but they last much longer. If you are looking to save energy, you’ll want to know how efficient they are. You’ll see this in the chart in the column lumens per watt. This is a measure of how well the light source produces light. The higher the number, the better your light bulb is at producing light. Visit your local retailer to see how they look in person, since tastes vary. For an explanation of the Color Rendition Index, read this previous post.
For Further Reading
Fox Business, Retailers Brace for Change Ahead of Incandescent Bulb Ban, http://www.foxbusiness.com/industries/2013/12/31/retailers-brace-for-change-ahead-incandescent-bulb-ban/
Osram, Sylvania Socket Survey, http://www.sylvania.com/en-us/tools-and-resources/surveys/Pages/socket-survey.aspx
NBC News, Majority of Americans still in the dark about incandescent light bulb phase-out, http://www.nbcnews.com/technology/majority-americans-still-dark-about-incandescent-light-bulb-phase-out-2D11805991
NBC News, With incandescents dead, smart bulbs step into the light, http://www.nbcnews.com/technology/incandescents-dead-smart-bulbs-step-light-2D11869426
Buildings, Incandescent Bulb Phase-Out Myths Debunked, http://www.buildings.com/news/industry-news/articleid/16806/title/incandescent-bulb-phase-out-myths-debunked.aspx
Newsday, Light bulb shopping choices under new ban, http://www.newsday.com/business/lightbulb-shopping-choices-under-new-ban-1.6706464
Clearlysapphire.com, Confused about Your Home Lighting? – LED, CFL and Incandescent Compared, http://blog.clearlysapphire.com/?p=492
It’s that time again and Christmas displays are popping up in and on homes all around the world. As we watch retailers like Home Depot and Walmart reduce prices on LED light bulbs, the same is happening with LED Christmas lights. So, is it time to make the switch?
Depending on your tastes, LED lighting for Christmas holiday decorating can be a quick affair with a few strings of lights on your Christmas tree or can be a large artistic expression in light on your home like you’re Clark Griswold of National Lampoon’s Christmas Vacation movie.
Let’s take a look at some of the facts.
LED lighting for the holidays is safer – they’re not hot to the touch, so they won’t start a fire, especially if lit for a long period of time. They’re sturdier and made of epoxy lenses rather than plastic or glass like traditional incandescents. They’re longer-lasting and could be in use 20 or even 40 years from now. And they use less energy (about 80 percent) so that you can connect more strings together in series without blowing a fuse (your’s and the lights).
You might remember the moment in Christmas Vacation when Clark Griswold turned on the Christmas lights on his home (decorated with 25,000 incandescent imported Italian twinkle lights) and caused a major power outage in the city of Chicago. While you might not take out your local power grid, you might be concerned with your electric bill if you tend to decorate like a Griswold. You may want to consider some information that the US Department of Energy put together information about energy requirements of Christmas lighting.
According to the DOE, it can cost up to $10 to light a six-foot tree, 12 hours a day for 40 days using large C-9 incandescent lights while incandescent mini-lights would cost about $2.72. LEDs on the other hand would cost 27 cents or 82 cents respectively to light that same tree for the same period of time. Over a decade, it could be quite costly to stick with incandescents. The DOE table is below.
Retailers are bringing more LED Christmas lights to consumers. According to a recent article in the Kansas City Star newspaper, Walmart dedicated half of its shelf space to LEDs. Costs are coming down from $5 for a string of 50 mini LED lights, down from $6.30 last year. In fact, Costco won’t sell incandescent Christmas lights in 2013. General Electric, selling holiday lights since 1903, anticipates that two out of every five strings of lights sold this year will be LEDs.
So, it may be time to ditch the old fashioned Christmas lights for some new LEDs. And for a laugh and some holiday cheer, watch Christmas Vacation or this clip from the movie where the Griswold’s incandescent Christmas lights take down the Chicago power grid.
US DOE Christmas Light Info
Estimated cost of electricity to light a six-foot tree for 12 hours a day for 40 days
|Incandescent C-9 lights||$10.00|
|LED C-9 lights||$0.27|
Estimated cost* of buying and operating lights for 10 holiday seasons
|Incandescent C-9 lights||$122.19|
|LED C-9 lights||$17.99|
*Assumes 50 C-9 bulbs and 200 mini-lights per tree, with electricity at $0.119 per kilowatt-hour (kWh) (AEO 2012 Residential Average). Prices of lights based on quoted prices for low volume purchases from major home improvement retailers. All costs have been discounted at an annual rate of 5.6%. Life span assumed to be three seasons (1,500 hours) for non-LED lights.
For Further Reading & Viewing
Kansas City Star, Christmas lights are going green, http://www.kansascity.com/2013/11/10/4612642/christmas-lights-are-going-green.html
Energy Manager Today, LEDs Lead the Way for Holiday Lights
National Lampoon’s Christmas Vacation, Griswold Home Power Outage Clip: http://www.youtube.com/watch?v=inWKw8nqQlI
US DOE Info: http://energy.gov/energysaver/articles/led-lighting
Street lights in Chattanooga, Tennessee are very smart and they can fight crime too. A Chattanooga company, Global Green Lighting, has developed the smart street light of the future. As described in a profile in The Atlantic Cities magazine, the city of Chattanooga was having gang problems in Coolidge Park, one of their city parks. The situation got so bad in 2011 that the city was facing a decision to close the park at dusk or light the park with gigantic flood lights for safety. Along came Global Green Lighting to save the day!
Global Green Lighting installed a new smart LED lighting system in Coolidge Park. Not only does the new LED lighting system provide better, less expensive lighting for the park, but the new wirelessly enabled LED lighting system offers the city the ability to work smarter. Each light can be controlled specifically to turn on at dusk and turn off at dawn. Each light also can turn into a crime fighting tool like a search light or brighten to illuminate a crime scene or trail a suspect as he or she sprints down a road. While park goers can’t activate the changes in the LED lighting, the lights can be controlled right from a police cruiser on site.
The LED lighting system also brings other advantages for the city. They can flash warning signals in emergencies like weather alerts. Further, they’ll be wired into the city’s power system and broadband network so the city can plug in devices like air quality sensors, video cameras, or WiFi routers.
After a successful test of 350 lights last year, Chattanooga worked with Global Green Lighting to replace the city’s 26,500 streetlamps at a cost of $18.1 million. The city estimates that the new lights will save $2.7 million each year when the project is completed in late 2013 and the system will pay for itself within seven years. Further, the system is so smart that it will alert the city when one of the LED lights is having a maintenance issue, letting them know which one needs service.
For Further Reading
Global Green Lighting, www.globalgreenlighting.com
The Atlantic Cities, The Streetlight of the Future Will Do So Much More Than Light Your Street, http://www.theatlanticcities.com/technology/2013/03/streetlight-future-will-do-so-much-more-light-your-street/4958/
BusinessWeek, Chattanooga’s Radio-Operated Streetlamps, http://www.businessweek.com/articles/2012-05-10/chattanoogas-radio-operated-streetlamps