Cree LED Revolution Blog

Cree and LED lighting are starting a revolution

Trust, but verify: Reducing Risk Prior to LED Implementation

Monday, December 5th, 2011

Those old enough to remember the 1980s may recall then President Ronald Reagan’s, “Trust, but verify” messaging as part of the United State’s Cold War negotiations with the former Soviet Union. While evaluating LED luminaires may not seem as important as dealing with a nuclear arms race, the same “Trust, but verify” philosophy should be used to reduce risk prior to any large scale implementation of LED products.

But what should you verify? To better limit risk it’s important to understand where risk resides. Some typical questions could include:

• How do I know I’ll get the necessary sustained light levels over the duration of my application?
• How do I know that the luminaire mounting is strong enough to withstand vibration over time?
• How do I know the luminaire and its paint finish are durable enough to resist corrosion?

It’s important to understand the difference between specifying product features versus specifying product performance. Specific product features may imply performance, but by themselves fall short of ensuring any specific level of performance. For example, a street light luminaire that advertises a product feature utilizing four mounting bolts, instead of two, may imply a certain level of increased performance. For instance, it may imply resistance to conditions such as vibration. But without credible performance data that specifically addresses vibration resistance, no assumption regarding a product’s resistance to vibration should be made. Specifying product performance removes product features from the specification and puts the focus on what actually reduces risk, some level of product performance.

Lets get back to the questions. Would the level of risk be more greatly reduced by pointing to either product specific features or credible performance data? Well if the movie Jerry Maguire was about a great lighting designer, he would have probably shouted, “Show Me the Data!” There are relevant standards in place that can be referenced to quantify levels of durability for the three questions above and more. Once the necessary performance level is determined and specified, potential suppliers should verify their ability to provide certain levels of performance with credible data so as to reduce risk.

But, what about product warranties – they minimize risk, right? Although warranties are designed to reduce risk, warranties also present certain risks as well. The first risk is based on the strength and credibility of the company offering the warranty in the first place. Two nearly identical five-year warranties may seem equal at first glance, but if there is a high degree of uncertainty that one of the two companies may even survive for five years, it’s unlikely these two warranties would be viewed as equals. Overall product reliability is another factor to consider when determining the potential strength or value of a warranty. Companies with proven performance are probably less likely to experience catastrophic failures on a scale that may jeopardize their ability to honor warranty claims compared to new companies entering the market.

So the goal to managing risk shouldn’t be left solely to a good warranty. Even the best warranties do not eliminate risk, since associated costs may be incurred should warranty claims need to be made. Therefore, specifying performance during the product selection process is the best way to minimize risk. Remember, “Trust, but verify.”

Which would you rather have in your back yard- HID, CFL or LED?

Tuesday, November 29th, 2011

Most people are familiar with the acronym NIMBY, or the phrase Not In My Back Yard. Usually it refers to something people feel they desperately need, but don’t want to live near.

NIMBY

It could be a major shopping center. Yes, it would be great to have your favorite retailers close to home rather than having to drive 15 miles to get to them. But you don’t want it within walking distance, because then you’d have to deal with the noise, the traffic and everything else that goes with it.

The same goes for landfills and power plants. You’re glad your favorite appliances have power and that your garbage has somewhere to go, but you don’t want the facility that generates the power or your garbage’s new home to be visible from your back door. Yet at some point, if we don’t change our ways, that’s exactly what could happen.

One way you can protect your personal back yard is by specifying LED lighting instead of High Intensity Discharge (HID) fixtures in any lighting projects. And the beauty is, making that move not only reduces waste and potential environmental hazards – it helps you save money. Here’s how.

Typical well maintained parking structures that operate 24 hours per day, 7 days a week with metal halide technology will be scheduled for group re-lamping approximately every 9 months. Which means a parking structure with 1,000 lamps will potentially add 1,000 lamps (bonus: which contain mercury!) to the waste stream every 9 months. Those lamps take up real estate, and as Will Rogers said, they’re not making any more of that.

So sooner or later, the disposal company has to build a new landfill – maybe next to you. If that’s not bad enough, as much as we’d like to believe that all lamps containing mercury ranging from the 1,000 HID lamps in our example above to the CFL lamps the neighbor down the street is using in their home will end up being properly recycled, sadly we know that this won’t always be the case. So as disturbing a sight that new landfill might be, what could be even more disturbing is the potential mercury that is being released from the improperly disposed lamps you can’t see.

Grandma Learns How to Clean Up a Compact Fluorescent Light Bulb

Contrast this with an LED solution. LEDs contain no mercury. In addition, LED solutions can be designed to provide near maintenance-free service for more than a decade, even in our 24/7 parking structure example. Over a ten year period the owners of that 1,000 HID lamp parking structure will need to determine how to safely dispose of more than 12,000 lamps that a properly designed LED solution could avoid altogether. But there’s more to it than that. The materials used in BetaLED® luminaires are also RoHS (Restriction of Hazardous Substances) compliant, which means dangerous substances commonly used in electrical and electronics appliances are also avoided. In addition, BetaLED products are highly recyclable making it much less likely that they’ll see the landfill. Instead, they end up in other products – perhaps even in new LED luminaires. Ah, the circle of life.

Finally, we know LEDs can save significant energy consumption. But when coupled with adaptive control systems that can range from a simple occupancy sensor to a complex network based system, LED luminaires can save even more energy consumption. Let’s look at our parking garage again. There are probably large blocks of times when certain areas are vacant. Keeping the lights operating at a level that always assumes occupancy is just wasting energy and money. But with LED products that utilize adaptive controls you can significantly reduce energy consumption even further during periods of inactivity and instantly increase light levels as spaces become occupied. Not only does that reduce energy cost – it also can extend the longevity of an LED system as well.

The best way to make NIMBY work is to avoid the need in the first place. How could you use LED luminaires to keep your back yard landfill- and power plant-free?

October Cree LED Lighting Contest Winner Hopes to Makeover Restaurant Bathroom

Monday, November 21st, 2011

Like many friendly co-workers, Ingrid McMasters and her colleague Barb occasionally stop by a local restaurant to grab a bite to eat. But, since Ingrid and Barb are both lighting designers, they can’t go anywhere without scrutinizing the light – even the bathroom.

Ingrid is the October winner of Cree’s LED lighting photo contest. She sent in this photo of these dim downlights in the bathroom of a restaurant in the Madison, Wisconsin area:

oct 2011 contest winner

Here's the photo Ingrid submitted.

“We were absolutely appalled at this attempt at energy efficiency when we saw it,” Ingrid wrote in an email to me.

So were our judges. While we always applaud attempts to make lighting more efficient, we also believe that folks shouldn’t have to compromise on light quality to save energy. Ingrid won five Cree CR6 LED downlights for exposing this poorly lit bathroom.

“My goal is to deliver these five cans directly to the owner of the restaurant in hopes that they’ll fix it.  I entered the contest since they were so obviously in need of assistance.  Color quality and hospitality feel are so important in a restaurant restroom,” Ingrid wrote.

We hope the restaurant owner sees the light and takes just a few minutes to install our downlights in their bathroom. Then they’ll know it’s possible to save energy without making restaurant patrons look sickly under the lights.

cr6

Cree's CR6 LED downlight consumes only 10.5 watts.

Our CR6 LED downlights feature Cree TrueWhite™ Technology, which is our patented approach to delivering bright, incandescent-like light that is more energy efficient than fluorescents. So the ladies who step under our lights in the bathroom will actually get to see what they look like, instead of having their reflections cloaked in dim, ugly light.

Other cool features of Cree’s CR6 LED downlight include:

  • Low Energy Consumption: This LED light consumes only 10.5 watts, but delivers the same light quality you would expect from a 65 watt Halogen light.
  • Long Lifetime: Designed to last 50,000 hours, the CR6 downlight could last more than 17 years if you left it on eight hours a day, seven days a week. For a restaurant or other business that may have to pay someone to change light bulbs, this could lead to great maintenance savings.
  • They Can  Dim Beautifully: Dimming your lights is one of the easiest ways to change the mood and rack up energy savings. The CR6 LED downlight is dimmable to 5 percent, giving you a chance to customize your lighting while saving more energy since the lights consume even less energy the more they’re dimmed.

Don’t miss your chance to win Cree CR6 LED downlights in our November contest. Just submit a photo of the lights at your home or business, showing us why you think you should get new Cree LED lights. Each month, our judges award one lucky winner 5 Cree CR6 LED lights. Submit your photo here.

Applying the Hybrid Car Principle to LED Lighting

Wednesday, November 16th, 2011

Talk to most people about the lifetime value or total cost of ownership versus the initial price and odds are you’ll get rolling eyes or glassy stares. Yeah, yeah, we’ve heard all that before, they’re thinking. Then came hybrid cars.

When regular unleaded gasoline was around $2 to $2.25 per gallon, hybrid cars were favored mostly by environmentally-conscious people and drivers who just wanted to be different. But when gas prices broke the $3 per gallon ceiling, and especially when they hovered around $4, suddenly you started seeing them everywhere. “Sure, they cost a little more up-front,” car buyers reasoned, “but we’ll easily make up for that when we’re smiling as we pass the gas pumps while others are miserably paying through the nose for a tank every few days.”

That’s the thing about the cost of a major investment. It isn’t only about what you pay to receive the goods. It’s about what it costs you overall, for as long as you use whatever it is.

This reasoning certainly applies to exterior and interior lighting. It’s not just about what the fixture costs initially. As this blog post says, it’s the total cost of ownership – including the cost of maintenance, as well as the cost of energy consumed by such solutions.

Take street lights, for example. A “20,000 hour” High Intensity Discharge (HID) lamp in a typical exterior scenario will likely be scheduled for replacement at 8,000 hours of service. Which, if you assume an average of 12 hours “on” per day, works out to 1.8 years.

Now compare that to an LED system that costs a little more to purchase up-front. For instance, an LED system rated at 50,000 hours will actually last 50,000 hours. What a concept! Again, assuming it’s on for 12 hours per day, that puts its service life at 11.4 years.

But the cost of the system isn’t the only thing involved. Replacing lamps also means sending out a road crew, paying for the fuel for the truck, shutting down lanes (thus suffering the ire of citizens who want the lamp replaced, but don’t want to be held up in traffic while it happens), properly disposing of the old lamp, etc. And you pay all those things every time a lamp needs to be replaced.

Maintenance on Street Light

Now here’s the kicker: LED systems continue to get more efficient each year, which means over the long term the cost to implement will likely keep going down. So by the time you’re ready to replace that system, in 11 years, it may actually cost you less.

Perhaps by then we’ll all be driving battery-powered vehicles. What do you think?

A Lot Can Happen in Just 20 Years: Where Exterior Lighting Was Then & Where It Is Now

Thursday, November 10th, 2011

To give you an idea of what the new generation of LED-based exterior lighting can mean to your projects, think back to what your life was like in 1990. That was over 20 years ago. Your cell phone, if you had one, was so big and heavy, carrying it probably qualified as an exercise program. Businesses and governments threw tons of dollars at something known ominously as Y2K, which was supposed to throw us back into the Stone Age. (It didn’t, but they still spent billions on new IT systems).  The washing machine and dryer you bought that year? They’re probably long gone…or chugging along on their last legs, costing more in energy alone than it would take to replace them with newer models.

Back then; the lighting industry was dominated by high intensity discharge sources like metal halide and high pressure sodium. Those lights were based on systems that often required the so-called 20,000-hour lamps in a standard exterior scenario to be replaced in masses as early as 8,000 hours after they were installed. Which means scheduled bulb replacements would have started just two years after installation.

Think about what that really means. While businesses and government agencies have always been told that they should do group “re-lamping” at the 8,000-hour mark, the fiscal reality is that hardly any of them ever do. They usually do spot re-lamping instead. That gets pretty costly year in and year out when you tally up the maintenance costs of hiring a crew, getting a lift truck out to the facility, and buying and installing the replacement lamps. It also results in poor lighting when lights go out, creating safety and image issues as well.

LED-based exterior lighting systems, on the other hand, not only can be designed to last up to 100,000 hours – they actually can remain in service that long, almost maintenance-free. That means they can last up to 20 years. By the time you’d need to replace your LED luminaire, who knows where technology will have taken us? Maybe we’ll all finally be carrying around the portable quantum generators that were predicted.

For businesses and governments looking to make smart infrastructure investments, LED-based exterior systems offer greater reliability, a wider range of optics to choose from, and can now last near maintenance-free for more than a decade. It’s one of the smartest fiscal moves they can make. Much smarter than our old washers and dryers that have needed to be replaced in the past 20 years.

September Contest Winner Wants Cree LED Lighting to Improve His Kitchen

Wednesday, November 9th, 2011

Jeff Jones has his shower to thank for his new Cree LED lighting. That’s because the recessed light over the shower in his bathroom only took up to a 40 watt incandescent bulb. And that just wasn’t enough light for him.

So Jeff began researching other options and found the Cree CR6 LED downlight, which is suitable for damp locations. So he installed it and found that the light output and color quality were outstanding.

“The CR6 was awesome. I have not found anything like it, so many LEDs on the market have a bluish tint to them, or are too pink,” Jeff wrote to me in an email.

So when it came time to replace the recessed lighting in his kitchen, Jeff decided to enter Cree’s monthly LED lighting giveaway. He hoped that his poorly lit kitchen would win the sympathy of our judges, and boy did it. Here’s the photo he submitted:

sept 2011 winner

“With the new CR6s in my kitchen I hope it will improve the light quality and brightness of the room.  Currently the 6” recessed cans I have take a PAR30 lamp, but the lamp is so recessed in the can that I only get a spot on the floor with no light in the room,” Jeff wrote.

We’re confident that Jeff’s new CR6 LED downlights will be a big improvement since they deliver warm, beautiful light. His new lights consume only 10.5 watts and use even less energy when dimmed (they’re dimmable to 5 percent).

And Jeff’s new CR6 LED downlights are designed to last 50,000 hours, which means he could leave them on eight hours a day, seven days a week and they could last more than 17 years!

We can’t wait to see an “after” photo once Jeff gets these installed. In the meantime, we want to see your photos. Submit a photo of the poor lighting in your life to our November photo contest. Someone will win 5 Cree CR6 LED downlights just like Jeff!

ENERGY STAR program helps spread word about energy-efficient lighting

Monday, November 7th, 2011

Today’s guest blog post is by Timothy Henning, Cree’s ENERGY STAR program manager.

If you go shopping for lighting or appliances, it’s hard to miss the blue ENERGY STAR® logo that’s displayed on many of the most efficient products. By now, many people have come to know it as the symbol of energy efficiency. But ENERGY STAR is more than just a sticker recognizing energy efficiency, and Cree is pleased to be an active participant in the lighting program.

What is ENERGY STAR? 

The ENERGY STAR program is a joint effort between the Department of Energy (DOE) and the Environmental Protection Agency (EPA) focused on providing consumers with energy-efficient products that save money and protect the environment at the same time.

By using ENERGY STAR approved products, ENERGY STAR reports that Americans have saved nearly $18 billion on utility bills and avoided greenhouse gas emissions equivalent to those from 33 million cars in 2010 alone! 

ES_CTW_GraphicFINAL9L_rgb

Partners Help Promote Efficiency

It takes a lot of effort to educate the world about the importance of choosing products that reduce energy consumption, so ENERGY STAR works with partners to help spread the word about energy-efficient products. This week, several Cree employees will be traveling to Charlotte, NC, in support of the 2011 ENERGY STAR Products Partner Meeting.

ENERGY STAR regularly hosts meetings for partners to gather to discuss new program initiatives, product specifications or other outreach activities. These meetings offer ENERGY STAR partners the opportunity to network with others to develop relationships and collaborations to promote ENERGY STAR. 

Cree Passed the Tests

While the ENERGY STAR program applies to a wide variety of products across a number of industries, Cree is an active participant of the lighting program. In order for Cree’s lamps and luminaires to earn the ENERGY STAR certification, our products must meet very strict photometric, electrical performance and regulatory requirements. 

Additionally, there are on-going program requirements and random product audits by the EPA to ensure the continued quality and integrity of the program.  To date, Cree has qualified 35 unique model numbers with more approvals anticipated before the end of the year! At Cree, we believe it’s important to meet ENERGY STAR’s requirements because it’s a key step toward getting good quality LED lighting in the market.

Simple Steps to Get Involved

Seeking out ENERGY STAR-qualified products isn’t the only way to help conserve energy. There are simple steps we can all take at home, work and in our communities to save energy, money and protect the environment. Currently, there’s a national campaign encouraging all Americans to take protect the climate.

Participating in the “Change the World, Start with ENERGY STAR” campaign is simple. Just take a moment to take a pledge to conserve energy by following some of the many steps outlined on the site.

And the next time you go shopping for energy-efficient LED lighting, be sure to look for the ENERGY STAR label.

Energy Awareness Month 2011 Blog Series Wrap-Up

Monday, October 31st, 2011

Energy Awareness Month isn’t a Hallmark celebration (yet) but for us energy-efficiency gurus, it’s a great excuse to shout from the rooftops the importance of conserving energy. This year we decided to celebrate with a month-long blog series focusing on the ways Cree’s products and employees are working to help improve energy-efficiency.  

But sometimes life gets in the way of Energy Awareness Month, which means you may have *gasp* missed some of our posts. Well, don’t despair. We’ve rounded up all of our posts from this month and summarized them in a nice, neat little package just for you.

Cree Energy Awareness Month

WEEK ONE

In our first week we highlighted some of the utility companies that are offering rebates for Cree’s energy-efficient LED lighting products, as well as the EcoSmart LED Downlight we make for Home Depot. We broke down the types of rebates utilities offer, and we showed off some of the best including programs in Illinois, Long Island and New Jersey.

REBATE

Oct. 4Utility Companies Offer Rebates for Cree LED Lighting

Oct. 5ComEd Offers Illinois Customers Major Rebates on Cree LED Lighting

Oct. 6LIPA Brings LED Lighting Rebates to Lucky Long Island Residents

Oct. 7Fist Pump! Rebate Gives New Jersey Residents Opportunity to Buy EcoSmart LED Downlight for $24.97

WEEK TWO

Typically this blog focuses on LEDs and LED lighting, but we couldn’t pass up the chance to teach you a little about another side of Cree’s business: Our energy-saving power products! We were honored to have Cree Co-founder John Palmour explain how silicon carbide-based diodes can make power supplies and electric motors more efficient. And we offered a great intro to our Silicon Carbide MOSFETs.  We also slipped a power post into week three because we’re wild like that (see below).

power plant

Oct. 12The Power to Do More: Cree Silicon Carbide-Based Diodes Improve Efficiency of Power Systems

Oct. 13Cree’s Silicon Carbide MOSFETs Help Improve Efficiency of Electronics

WEEK THREE

In week three, we primarily focused on Cree LED lighting, showing you a couple examples of ways our LED lights are saving energy in places you might not think of such as Kentucky’s State Capitol rotunda and gas stations throughout the country. We reiterated the importance of knowing the difference between lumens and watts when shopping for LED lighting. And we had to a leftover post from our Power week about solar panels that we couldn’t let you miss, so we slipped it in.

petrol1

Oct. 17Get Il-lumen-ated with Lighting Facts: Knowing the Difference Between Lumens and Watts

Oct. 18Making Solar Panels More Efficient with Silicon Carbide Schottky Diodes

Oct. 19Kentucky State Capitol Rotunda Shines with Cree LED Lighting

Oct. 20Energy-Savings Surprises at Gas Stations

Oct. 21Spotlight on One of Cree’s R&D Engineers

WEEK FOUR

In week four, we focused on Cree LED components, showing you a variety of special places you can find them (from a solar-powered car to the University of Michigan’s Big House). We also told you about our investigative applications engineers and how Cree EasyWhite technology can make it easier for you to design with LEDs. And, our senior director of components marketing did an outstanding job explaining why Cree is completely rethinking lighting.

Photo by Andreas Peña Doll

Photo by Andreas Peña Doll

Oct. 28Why We Push for Revolution, Not Evolution

Oct. 27Solar Race Takes Cree LEDs “Down Under”

Oct. 26Get Your Game Face on with Cree LEDs

Oct. 25Cree Applications Engineers Investigate LEDs

Oct. 24Bye Bye Binning, Hello EasyWhite: How Cree’s EasyWhite Technology Simplifies Designing with LEDs

We hope you learned something about our commitment to making products that help conserve energy. Now don’t leave without checking out our LED-lit pumpkin carving contest.

Guest Blog Post: Why We Push for Revolution, not Evolution

Friday, October 28th, 2011

All month long, Cree has celebrated Energy Awareness Month. Through a series of blog posts, Cree has brought to you information about ways our products and our customers and partners are helping save energy. Today’s final guest blog post is by Cree’s senior director of marketing, LED components, Mike Watson.

Revolution. It’s a popular word these days. Much of the current revolution discussion is politically or socially motivated (the Middle East, Occupy Wall Street, etc.). Here at Cree, we talk about the energy revolution and more specifically, the LED lighting revolution every day.

Many countries outside North America know that to meet future economic demands, they must fundamentally change the way they consume power and they must do it now.

Instead of talking about change, they are making it, via policy directives and government mandates to encourage innovation and implementation of energy-efficient products. Just look at China – it recently completed its largest highway lighting upgrade with more than 10,000 street lights and more than a million Cree LEDs!

Cree Energy Awareness Month

When we look back at the last 100 years of lighting, precious little has changed in terms of technology, performance or form factor.  Lighting technologies haven’t evolved as demand has increased.

This type of evolution isn’t going to work for LED lighting, nor will it happen fast enough for us to address ever-increasing energy consumption.   

The much lauded (and much maligned) CFL has been heralded for more than thirty years, but market penetration has stalled at just about 10 percent. Yes, stalled, despite massive promotions at big box hardware stores, continued rebates from power companies and technical and quality improvements over several decades. 

That’s scary, especially to those of us in the lighting biz. Could that same slow adoption curve curse LED lighting?

We can’t wait thirty years for the widespread adoption of a technology that is ready now—ready to change the way we light streets and parking lots, grocery stores and offices, homes and even our cars.

So I’m talking about a revolution. The kind of revolution where we throw out preconceived notions, we cast aside things that don’t work anymore and we step into the brave, new, well-lit world.

That’s why we’re completely rethinking lighting.

It’s not about watts, it’s about lumens. It’s not about bulbs and fixtures. And it’s not about cost per bulb.

It’s about cost over lifetime and getting better light, for longer, with bigger bang for your buck.

It’s time to demand better, more efficient lighting. Don’t you agree?

Get il-LUMEN-ated with Lighting Facts: Knowing the Difference Between Lumens and Watts

Monday, October 17th, 2011

Cree is celebrating Energy Awareness Month with a series of blog posts about ways Cree and our products are helping save energy.

To help you become more energy aware, we’re going to drop some knowledge on you with what’s coming up in the wild and crazy world of lighting. As we’ve shared with you before here and here, beginning in 2012, you are going to start seeing new packaging and labeling on all household bulbs. The idea is that this information will help you save money by selecting the most efficient bulbs that fit all of your lighting needs.

Check this out…

Does that help? If not, maybe this breaks it down a little better…

light-bulb-chart2

Still confused? The National Association of Electrical Manufacturers (NEMA) also did an awesome job of explaining it in their The 5 Ls of Lighting – The Consumer’s Guide to Choosing Energy-Efficient Lighting.

Basically, forget everything you thought about when buying lighting products. Yup, everything. Erase it from your memory. You used to buy on watts, which measures the amount of energy required to illuminate lighting products. But with more energy-efficient lighting available, like Cree’s EcoSmart LED Downlight, you need to buy your lighting based on lumens, which measures the amount of light produced.

The more lumens, the brighter the light. For example:

  • 40-watt incandescent bulb = 450 lumens
  • 60-watt incandescent bulb = 800 lumens
  • 100-watt incandescent bulb = 1600 lumens

“Nutrition” Labels

Similar to the nutrition labels that you find on your food packaging, the new labels that will be coming in 2012 will have concise information about the bulb’s output and savings.

lighting facts label

Cree labels include:

  • Brightness (in lumens)
  • Estimated Yearly Energy Cost
  • Life-expectancy of the bulb
  • Light appearance and
  • Energy used

What Cree labels won’t include – Contains Mercury. That’s right, those other energy-efficient bulbs, you know the ones, the twisty-twirly CFLs contain mercury and will have to disclose that on their labels.

So now that you’ve been educated and you know how to shop, go out and get your Cree LED Lighting!