Cree LED Revolution Blog

Cree and LED lighting are starting a revolution

High School Computer Lab Gets Cree LED Lighting Makeover

Monday, May 16th, 2011

The days are numbered for commercial fluorescent lighting. For those of you who are attending Lightfair this week, you’ll have a chance to see why at our booth #1925. For those of you who aren’t going or just can’t wait to see what the future of commercial lighting is, you’ll want to watch this LED lighting makeover video.

Cree’s new CR troffer series is designed to replace ugly, old fluorescent tubes. We’ll be showcasing the series at Lightfair International this week in Philadelphia. The series features three models and several performance options, the CR14, which is 1 ft x 4 ft; the CR 24, which is 2 ft x 4 ft; and the CR 22, which is 2 ft x 2 ft.

In this video, you’ll get to see us upgrade a computer lab in a North Carolina high school. We replaced outdated T12 fluorescent lights and ballasts with the Cree CR24. The results are beautiful and show just how much energy you can save with LED lighting.

The school reduced its energy consumption by 75 percent by replacing the school’s old T12 fluorescent lights and ballasts with the Cree CR24. The video has more details on exactly what they replaced. And, since the federal government has ordered a national phase out of energy-wasting T12 fluorescent tubes, the school would have had to replace its lights soon.

We calculated payback on what it would have cost the school to replace its T12 fluorescent lights with fluorescent lighting comparable to the CR24 LED troffers. By choosing the LED lights, the school would see payback in just over six months! After that, the school would continue to save on energy and maintenance costs.

Lightfair goers will get to see these lights in person at our booth. It’s one of the many products we’re excited to be showcasing at our booth. For more details on Cree’s CR troffer series go to CRSeries.CreeLEDLighting.com.

Longer-lasting Cree LED lighting helps reduce lighting maintenance at Lee University

Tuesday, January 18th, 2011

How many people does it take to change a light bulb? Well, if we’re talking about the light bulbs in the lobby of the Humanities Building at Lee University, it takes three.

Three members from the university’s maintenance team must be on hand to help replace burned out bulbs in the 30-foot ceiling. To get to the lights they must first cover the ceramic tile floor with plywood so the floor won’t be damaged when they steer a scissor lift into the building.

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The ceramic tiles in the lobby of the Humanities building must be covered with plywood before a lift can be steered in to reach the light fixutres.

It’s a labor-intensive, time consuming task, taking about four hours from start to finish. And they must change the lights after-hours when the lobby is empty.  So instead of doing it every time one of the fluorescent bulbs burns out, they wait and replace them all every two years, whether they’re burned out or not.

But it should be a long time before maintenance has to break out the scissor lift again. That’s because the school recently replaced the fluorescent lighting in the lobby with longer-lasting Cree LED lighting.

“We were trying to find locations that were either high risk, difficult to get to or inconvenient, and that’s how we came up with this lobby — It’s hard to get to,” university electrician Ron Broach said of the lobby placement of the school’s new LED lights.

In all, 18 fluorescent can lights were replaced with 17 Cree LR24 LED lights in the lobby of the Humanities Building at Lee University, a private college in Cleveland, Tenn. The university worked with Lytestyles, a distributor of Cree LED lighting in Tennessee, to purchase the fixtures.

Cree LR24 LED lights replaced fluorescent lighting in the lobby of the Humanities Building.

Cree LR24 LED lights replaced fluorescent lighting in the lobby of the Humanities Building.

 The new Cree lights are designed to last 50,000 hours. That means Lee University could leave them on for 12 hours per day, 7 days a week and not have to worry about changing them for at least 11 years.

Ron said based on current usage, he’s hopeful a three-person crew won’t be have to be dispatched to replace lights in the lobby for at least seven to 10 years.

Initially, the university planned to replace all 18 fluorescent lights with Cree LED lights. But there was one fixture over the staircase that was particularly tricky to reach, Ron said. Once the other Cree LED lights were installed, Ron said the light quality was so improved that it wasn’t necessary to replace the precariously placed 18th fixture.

The stairwell in the Humanities Building lobby posed challenges when flurorescent lights needed replacing.

The stairwell in the Humanities Building lobby posed challenges when flurorescent lights needed replacing.

The LED lights also makes a piece of art in the lobby stand out, he said. The Humanities Building lobby features a floor-to-ceiling mural displaying the university’s history through enlarged newspaper clippings and photos from school events. Ron says the mural looks better than ever thanks to the improved light quality provided by the LR24 LED lights.

“It has exceeded our expectations,” Ron said of the Cree LED lighting. “It was a new thing for us when we put these in, and we’ve been happy with the results. The lighting is even, it’s constant, it doesn’t flicker and the lights don’t go out.”

Now that’s revolutionary!

Indiana Tech upgrades oldest building on campus with LED lighting

Tuesday, November 23rd, 2010

Built in 1857, the Administration Center at Indiana Tech University is a landmark for generations of alumni who know that even as the campus grows, they can always count on recognizing the familiar historic brick building when they visit.

And now, the oldest building on campus is historic for another reason: It’s the first building on campus to boast energy-efficient Cree LED lighting.

The 153-year-old building was gutted for renovation in October 2009 with the goal of achieving LEED (Leadership in Energy and Environmental Design) certification. The resulting work transformed the pre-Civil War era building into a haven of energy-efficient technology and sustainable design.

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The historic Administration Center at Indiana Tech is a landmark for alumni.

When architect Terry Thornsbury of Viridian Architectural Design began planning the project, he said he knew he wanted to incorporate LED lighting.

“We wanted something that would help get us as many points as possible in the LEED system and reduce energy but also have a pretty good return on investment,” Thornsbury said. “Anyone who comes to me saying they want to save energy, the first thing I’m going to tell them is you’re going to want to do LED lighting because it makes sense these days to reduce energy consumption.”

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Ninety-eight percent of the building is lit with Cree LED lighting.

The three-story building is lit 98 percent with Cree LED lights, helping the Fort Wayne, Indiana-based college conserve energy, reduce maintenance and provide beautiful light for employees, students and alumni. The 10,957-square foot building features:

  • 97 Cree LR24™ LED troffer lights. Offices, conference rooms and corridors illuminated with beautiful, clean white LED light. Each light consumes only 44 Watts while delivering 3,200 lumens. The high-quality light features rates 90 on the Color Rendering Index with a color temperature of 3,500K.
  • 61 Cree LR6C™ LED downlights.  Each light consumes only 10.5 Watts while delivering 650 lumens. The lights rate 92 on the Color Rendering Index and also feature a color temperature of 3,500K.
  • Long lifetime. The Cree LED lights are designed to last 50,000 hours. At the 50,000 hour mark, Cree’s LED lights are designed to provide at least 70 percent of their initial light output. That means the lights in the Administration Center could last more than 19 years based on the university’s projected use of 10 hours a day, five days a week.
  • Energy Efficiency. Over the long life of the LED lights, compared to a fluorescent downlight, the energy-efficient lighting in the Administration Center can save an estimated 259,700 kWh, which avoids 270 tons of carbon dioxide emissions.
  • Intelligent Control. The Cree LED lights work with an Intelligent Lighting Controls system with occupancy sensors and daylight harvesting, a control system that helps conserve even more energy by automatically adjusting the light level based on how much natural daylight is shining through the building’s large, preserved windows.

The University also worked with Primary Engineering, Inc., a Ft. Wayne, Indiana-based firm dedicated to sustainable design and CM Buck and Associates, Inc. which distributes Cree LED lighting in the Ft. Wayne area.

Indiana Tech Facilities Director Mike Townsley said he was skeptical an all LED-lit building would provide enough light for employees to work under. But that hasn’t been a problem, he said. Instead, employees are taking advantage of dimmers installed in each room. He said most employees are keeping the lights in their offices dimmed to 50 percent, which helps save even more energy.

“We’ve heard positive feedback about the lights,” Townsley said. “So far I’m pleasantly surprised.”

Mike Peterson is one of the university officials who moved into the newly-renovated building in July. He said he likes the controllability the dimmer in his office offers. He also enjoys the quality of the LED light.

“There’s good light distribution around the room,” Peterson said. “It doesn’t feel like there are dark areas or shadows.”

As director of Alumni Relations, Peterson says there’s another benefit to the LED lighting: Alumni like it.

“When you’re talking with alumni, any time you’re doing anything that’s technologically advanced it’s a plus,” Peterson said, adding that it’s a bonus that LED lighting technology is helping the school conserve energy. “[Alumni] feel like we’re being smart with the money that’s invested by them,” he said.

The building houses the Alumni Welcome Center, which is designed to be an inviting place complete with a fireplace made with bricks salvaged from the building. The warm, recessed Cree LED lighting adds to the ambiance, he said.

Cree LR6C LED downlights and LR24 LED troffer lights illuminate the building.

Cree LR6C LED downlights and LR24 LED troffer lights illuminate the building.

The Administration Center renovations were made possible by a $2 million donation from alumnus Wilfred Uytengsu, Sr., who wanted the money to go toward energy-efficient improvements. The building was recently renamed the Wilfred Uytengsu, Sr. Center in his honor.

And while Thornsbury was initially hoping to achieve LEED Silver level certification, the project exceeded expectations and has been submitted for Gold level certification. We’ll let you know when Indiana Tech receives final word from the U.S. Green Building Council.

Furniture store employees can stop changing light bulbs thanks to new Cree LED lights

Tuesday, October 12th, 2010


If you took a job in the furniture business, chances are you wouldn’t expect changing light bulbs to be part of your daily routine. But for some employees at the 330 specialty furniture stores owned by the Furniture Row Companies, changing light bulbs became second nature.

That’s because many of the stores were lit with energy-wasting 90-Watt halogen bulbs. In fact, Furniture Row officials estimate that employees spent about 15 hours per week replacing burned out halogen bulbs.

At the Sofa Mart in Yuma, Arizona (one of the specialty stores owned by Furniture Row), store manager Stu Cozzens says employees changed out about 20 bulbs each month. But he’s hoping that will be a task of the past thanks to the newly-installed Cree LRP-38™ LED spotlights that shine on his store.

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Cree LRP-38 LED spotlights were installed at the Sofa Mart in Yuma, Arizona.

“We are hoping that number will be reduced greatly with the new bulbs,” Stu told me.

LED Lights are Long Lasting

That shouldn’t be hard. The LRP-38 LED light is designed to last 50,000 hours in open applications like this. That means Stu could leave these lights on in his store for eight hours a day, seven days a week and could go more than 17 years before he would have to replace them. There are 250 LRP-38 LED lights illuminating the showroom that Stu manages.

In fact, the Furniture Row Companies is in the process of converting all of its 330 Sofa Mart®, Oak Express®, Bedroom Expressions® and Denver Mattress Company® specialty furniture stores to Cree LED Lighting. Last month we announced that nearly 13,000 Cree LRP-38 LED lights were installed out of more than 80,000 planned. In most cases, the 11-Watt Cree LED lights are replacing inefficient 90-Watt halogen bulbs.

“We knew we wanted new lighting that addressed our goal of being environmental stewards, but we also wanted to remain fiscally responsible,” Rod Schnurr, Furniture Row store planning coordinator, said in a recent press release. “We also knew that we couldn’t sacrifice the high quality of light needed to accentuate the wood grains and highlight the beauty of the fabrics – that’s what these Cree lights do.”

Ladders and Bulb Replacement

We sent a photographer out to Sofa Mart in Yuma, and when I saw the height of the tracks the lights live on, I understood the hassle.

Can you imagine climbing a ladder to change bulbs up this high?

Can you imagine climbing a ladder to change bulbs up this high?

Replacing those bulbs means dragging out a tall ladder and climbing up it. Suddenly I was able to see why Furniture Row employees spent an estimated 15 hours per week replacing bulbs throughout the 330 locations. This isn’t like replacing a bulb over your bathroom sink, this requires actual labor.

The long life of the Cree LED lights isn’t the only perk Furniture Row should experience. These LED lights also consume significantly less energy than halogen lights while providing high quality light. The first Furniture Row Shopping Center to install Cree LED lights saved $4,200 on monthly energy costs compared to the original lighting, Schnurr said. Another bonus? The LRP-38 LED spotlights generate less heat, which can result in savings on air conditioning costs.

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So the next time you’re out shopping and you see an employee on a ladder changing a light bulb, maybe you should kindly tell their manager about long-lasting LED lights. And if you are a manager or a store owner, what are you waiting for? Give LED lights a try so your employees can spend more time doing their jobs and less time screwing in light bulbs.

Street festival planned to celebrate Raleigh’s Hillsborough Street revitalization, including LED street lights

Friday, September 24th, 2010

It’s not often that thousands of people get together just to celebrate a street. But that’s exactly what will be happening Saturday in Raleigh, NC, when the city hosts a street celebration festival for Hillsborough Street.

The “Live It Up” Street Opening Celebration is meant to unite neighbors, business owners, students and other Raleigh residents to salute the recently-renovated street. And while most eyes will probably be on the performers, beer garden and farmers market set up to celebrate, we lighting geeks will be looking up at the new LED street and pedestrian lights that have been installed.

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LED street lights shine down on Hillsborough Street in Raleigh, NC, adjacent to North Carolina State University.

The city of Raleigh replaced the energy-wasting metal halide lights that used to line the street with energy-efficient LED lighting manufactured by BetaLED, a Wisconsin-based company that uses Cree LEDs in its lights. Here’s what got replaced:

  • 15 metal halide street lights consuming 370 Watts each were replaced with 15 183-Watt LED street lights.
  • 40 metal halide street lights consuming 289 Watts a piece were replaced with 40 79-Watt LED street lights.
  • 85 metal halide streetlights consuming 190 Watts each were replaced with 85 55-Watt LED pedestrian lights.

In addition to saving energy and maintenance costs, the new LED lights have also improved visibility for pedestrians and drivers, says Bob Henderson, technical lighting consultant for Progress Energy, the city’s energy provider.

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City officials had to jump through some hoops to get the LED street lights installed, including convincing the North Carolina Department of Transportation (which owns the road) that it was the right move. Raleigh’s Assistant City Manager Dan Howe talks about the process in this video:

Howe says the city is going to continue to evaluate LED street lighting.

“We’ve done a couple of little pilot projects and they were successful, but this is a major public corridor and it’s working,” Howe said. “So what we’re going to try to do from this point out is to test the viability of LED lighting in a variety of street light settings around the city: Residential street lights, commercial streets in industrial areas, commercial streets in downtown and some other retail areas.”

Howe said the city still has a bit to learn about things like proper spacing of lights, the best height for the poles and more, but that these test installations will help the city determine some best practices before tackling even bigger street lighting projects.

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The difference with the LED street lights on the right is obvious. The LED lights provide clean, white light compared to the orange high pressure sodium lights on the right.

To see more examples of LED lighting in Raleigh, take a look at this Raleigh LED City tour.

And for more information about Saturday’s Hillsborough Street celebration, which Cree is sponsoring, check out the schedule of events.

How can grocers make their fruits and veggies pop? Hint: It involves LED lights

Thursday, August 12th, 2010

The ladders at a Michigan-based grocery chain are being used a lot less these days now that the produce sections are lit with Cree LED lights.

Up until a few months ago, employees at the three Value Center Marketplace stores used to haul out the ladder every couple of weeks to replace the burned out 90-Watt Par 38 spotlights that lit up the fruits and veggies, according to store owner Ron Fariada.

But earlier this summer, Ron replaced the energy-wasting incandescent lights in the produce sections at all three of his stores with energy-efficient Cree LRP-38™ LED lights. His new LED lights consume only 11 Watts of energy and provide beautiful, warm light that helps make the color of the store’s fruits and vegetables pop.

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“It’s just worry free,” Ron said. “I’m not going to have to worry about changing any bulbs for years. There was an upfront cost, but you’ve got immediate savings as far as power.”

When Ron opened the first Value Center Marketplace in 1989, he was committed to offering the freshest quality foods and the best in family value. More than 20 years later, Ron now runs three of the grocers just outside Detroit, Michigan.

In all, he replaced 50 incandescent lights at each of stores with Cree LRP-38 lights, for a total of 150 LED lights.

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Ron said he expects a two-year payback on his LED lights when he takes into account the energy savings and maintenance savings. The produce lights in his stores are on for about 12 hours a day, seven days a week. And since the LRP-38 LED lights are designed to last 50,000 hours, Ron could continue to save energy and money for another nine years before he needs to consider replacing the lights.

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Already he’s noticed that when he walks under his new LED lights, the area feels cooler than when the 90 Watt incandescent spotlights were lighting up the area.  Ron said he also expects to see HVAC savings.

The produce at Ron’s stores is hand-picked daily from the local farmers market. And now, it can truly shine under LED lights.

Happy anniversary to the first LEED-certified McDonald’s in North Carolina

Thursday, July 15th, 2010

Four years ago, Ric Richards had to decide what to do with an aging McDonald’s franchise he just purchased in Cary, NC. The 25-year-old building was going to need “serious reinvestment,” he said, requiring major renovations to the front of the restaurant and drive-thru.

So Ric decided to do something he dreamed of ever since stepping foot in the first green McDonad’s in Savannah, Ga. He decided he was going to tear down the old McDonald’s and go for the gold. Ric wanted to achieve a gold LEED certification from the U.S. Green Building Council.

Mcdonalds Old Cary

Here's what the Cary McDonald's looked like before it was rebuilt.

“This was going to be the right thing to do,” Ric told me when I interviewed him last year about his decision.

Today marks the one-year anniversary of Ric’s dream coming true. The green McDonald’s in Cary’s Saltbox Village shopping center opened its doors one year ago today, and Ric and his crew are inviting the public to celebrate from 4 to 7 p.m. (for those readers who live in the area).

Once the decision was made to demolish the old McDonalds, 99 percent of the building materials were recycled. Then, a variety of sustainable goods – from tables made of bamboo and sunflower seeds to denim insulation – were used in the reconstruction. And, of course, we were thrilled when Ric decided to light the restaurant, inside and out, with LED lights.

Here's what it looks like today.

Here's what it looks like today.

In fact, 95 percent of the restaurant is lit with energy-saving LED lights. Nearly all of the general illumination inside the McDonald’s comes from Cree LED lights. And the LED lights in his store consume 78 percent less electricity compared to a standard lighting package at other McDonald’s restaurants.

Cree LR6 recessed downlights light up the order area.

Cree LR6 recessed downlights light up the order area.

In January, the USBGC announced that Rich’s goal had been achieved. The Cary McDonald’s earned gold LEED certification.

The dining room is lit with Cree LRP-38 LED lights.

The dining room is lit with Cree LRP-38 LED lights.

We’re proud of Ric’s accomplishment and thrilled that his new energy-efficient lights helped him achieve his dream. Now would someone please bring me some chicken McNuggets? I hear they look better under LED lights.

Oldest parking deck in Durham, NC, receives major facelift including LED lights

Tuesday, June 22nd, 2010

In 1964, the city of Durham, NC, began construction on its first parking garage. The Corcoran Parking Garage is still heavily used more than 45 years later, providing daytime parking for downtown workers and evening parking for theater-goers at the Durham Performing Arts Center and even baseball fans at the nearby Durham Bulls Athletic Park.

Renovations on the aging garage began last year, and are being wrapped up this month. Among the new features are 200 LED lighting fixtures, which dramatically improve visibility in the newly-painted garage.

A look at Durham's oldest parking deck after it was built in the 1960s. Photo courtesy of Endangered Durham.

A look at Durham's oldest parking deck after it was built in the 1960s. Photo courtesy of Endangered Durham.

I walked through the deck after a recent Durham Bulls game to get footage of the new lights and I kept declaring how amazing it was. As a former Durham resident, I’ve actually been inside this deck when it was lit with the dingy metal halide lights, and the deck felt older and not as safe. The difference with the new LED lights was truly extraordinary. There were no shadows and the signage was easily readable.

City officials say the new LED fixtures use only one-fifth of the energy consumed by the metal halide fixtures they replaced. At the 0:52 mark in this video, you’ll really notice the dramatic difference in lighting if you look at the contrast of the orange high pressure sodium streetlight glowing in front of the garage.

As part of other renovations, the City of Durham is currently installing LED lighting in another downtown parking deck and has plans for yet another. The Bull City, as it’s affectionately called by locals, joined the LED City program last month, and plans to continue considering energy-efficient LED lighting as it renovates and constructs new buildings and structures.

For a look at some original photos of the Corcoran Parking Garage as it was being built in 1964, check out this blog post on Endangered Durham.

Cree to provide LED lighting for kitchens in new Habitat for Humanity homes

Wednesday, May 26th, 2010

Cree LED lights will soon light up kitchens in thousands of homes built by Habitat for Humanity. Last week Cree announced its three-year, $1.5 million pledge to Habitat for Humanity International to provide our newest LED downlight for the kitchens in all new Habitat homes built in the United States.

Specifically we’ll be providing our CR6™ downlight, which is targeted to go to market this summer for about $60 each. This 10.5 Watt downlight is designed to last 50,000 hours, which means if homeowners use these lights four hours a day, they shouldn’t have to replace them for more than 30 years.

We’re very excited about this pledge because it can help reduce electricity costs for low-income homeowners. Habitat for Humanity already works to build homes that are more sustainable and efficient, and the addition of LED lights will help these homes save more energy.

In North Carolina, a Habitat homeowner should save almost $450 over five years by having the CR6 down lights installed instead of the currently-used halogens.* For a house in California, that jumps to nearly $600 in savings.*

A couple of weeks ago, I got to visit a Habitat home being built in Durham, NC. We delivered two of the CR6 downlights. My boss climbed up on a ladder to show the crew how to install the lights. All he did was take the trim off the existing fixture, unscrew the energy-wasting Halogen light and screwed in the CR6. Since I filmed him doing it, I was able to time him, and it took him 28 seconds! But you’ll have to take my word for it, because I’m not sure he’s ready to make his YouTube debut quite yet.

However, I also filmed the installation of the next CR6 by David Larkins, the construction director for Habitat for Humanity of Durham. I pulled him aside afterward to talk to him about the LED lights that were just installed. At the time he had no idea Cree was planning on putting these lights in kitchens at thousands of Habitat homes. Here’s what David had to say:

“We try to make a house that’s really easy to maintain, and energy efficiency is part of that,” he said. “A lot of the energy-efficiency improvements that we do just make a home that is smarter and simpler to maintain.”

Cree designed the CR6 specifically to make LED lighting more affordable for residential applications and we couldn’t think of a better residential application than inside homes for Habitat for Humanity.

*We came to this conclusion by using a North Carolina electricity rate of 9.42 cents per kWh and a California rate of 15.69 cents per kWh. We calculated four lights turned on 6 hours a day.

Extraordinary energy savings achieved in the Rayburn House Office Building Cafeteria

Wednesday, April 21st, 2010

LED lighting is continuing to work its way into Washington, DC. Cree LED lighting was recently installed in the Rayburn House Office Building Cafeteria, a move that can result in big energy savings.

Just how big? Well, the incandescent lights that were previously used in the cafeteria consumed more than 6,000 Watts of energy. The new Cree LED lights along with advanced building controls consume a total of about 1,200 Watts. That’s an 80 percent energy savings. Even better, these energy savings can be achieved while improving the quality of light in the cafeteria.

The Rayburn project included replacing the existing fixtures with 46 Cree LR24 Architectural Lay-in LED fixtures and 51 Cree LR6-DR650 LED Downlights.  House Speaker Nancy Pelosi was on hand today to tout the energy savings. Check out this Twitpic from Tuesday’s press conference by Rep. Debbie Wasserman Schultz:

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In addition to the energy benefits of the LED lights, the extremely long life (they’re designed to last 50,000 hours) of the fixtures can provides year of virtually maintenance free operation. Seriously, these lights could last nearly 20 years running 10 hours a day, 260 days a year. This can help avoid the economic cost of lamp replacements. That also can mean less waste in our landfills. It could take about 1,200 incandescent bulbs to last as long as the LED lights and nearly 350 toxic mercury containing fluorescent lamps.

Here’s hoping the federal government continues to see the light on energy-efficient LED lighting.