Sustainable Design for the 21st Century

Philips’ newest LED: a five-buck bulb

c/net.com (April 21, 2015)

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It’s only been a few years since LED light bulbs sold for thirty bucks a piece or more, but — thankfully — prices have since fallen steadily. These days, you’ll find plenty of strong options that cost $10 or less, but Philips is pushing things a step further, with a new 60W equivalent LED that’ll retail for less than $5.

At that price, Philips’ new bulb is already the least expensive big-brand LED we’ve seen, but to further sweeten the deal, the Dutch manufacturer is offering two bulbs for the price of one at Home Depot for the first ninety days of its shelf life. That brings the cost per bulb down to something less than you’d pay for a morning latte — and makes outfitting a whole home’s worth of bulbs seem a lot more feasible.

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 The new 60W equivalent draws 8.5 watts and puts out a stated 800 lumens, putting it right on par with other, comparable LEDs in terms of brightness, and making it slightly more efficient than many of its competitors. Philips rates the bulb with a 10-year lifespan — notably shorter than most other LEDs, which will typically promise to last well over twenty years.

Still, the aim here is more focused on upfront appeal, and on getting LED skeptics and incandescent hold-outs to give the bulb a chance. It’s a very similar approach to what Cree’s doing, especially the Cree 4Flow LED, which costs $8. Both bulbs eschew heat-sink-centric LED design in favor of inexpensive, plastic-bodied builds that mimic the look of incandescents. They’ll fight it out side by side on Home Depot shelves.

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2014 LED lighting will exceed fluorescent lamps in the U.S. market for the first time


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American manufacturer Precision Paragon recently released a survey report about the status of the lighting industry.  A total of more than 5,000 professionals in the lighting industry received the survey.  The results showed LED lighting will exceed energy-efficient fluorescent lamps in sales for the year 2014.

More than half of the respondents believe that the energy efficient lighting market grew moderately or significantly in 2013.


Surveyed lighting companies said that in the past few years (mainly since 2010), their annual sales achieved increased LED growth, mainly from 57% to 64%.

63% of companies said its 2013 revenues achieved or exceeded their expectations.  Up to 82% of the respondents expect the LED lighting industry demand will continue to grow in 2014.

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Although fluorescent lamp sales remain strong in 2013, the respondents said the proportion of those using LED lighting products has accounted for 37% in 2013, that means annual growth of LED lighting products is about 8%.

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In addition, respondents believe that by 2014, the amount of installed LED lighting will exceed fluorescent lamps for the first time, and take over the dominant share of the market.

Based on the above investigations, LED lighting will continue to maintain a high demand for the U.S. market in the future.

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Philips SlimStyle LED Lightbulb for Under $4.00

By Brent Sauser          Philips SlimStyle 03

Green technology continues to advance to the benefit of the consumer. LED technology is one of the most exciting areas of rapid innovation. Philips has perfected a 10.5-watt, slim style LED light bulb that produces 800 lumens of light for the average cost per year of $1.26, with a 25,000 hour useful life. All of this for less than $4.00 (after instant utility rebates). Not only does this reduce electricity costs for lighting, but also reduces the heat load which contributes to A/C cooling costs. The following is an article from “C/NET.com”, by Ry Crist (dated April 24, 2014): Philips SlimStyle 01

Philips announced Energy Star certification for its SlimStyle LED this morning, a distinction that qualifies the flat-shaped bulb for instant utility rebates in several regions of the United States. Coupled with the fact that Philips recently cut the SlimStyle’s price to $8.97 at Home Depots nationwide, the news means that many consumers will be able to purchase the LED for less than $4.

Debuting in stores earlier this year, the SlimStyle is a 10.5-watt LED that puts out 800 lumens worth of light for an average yearly energy cost of $1.26. The SlimStyle’s flat shape is designed to distribute the diodes along the perimeter of the bulb rather than bunching them in the center, which helps it to distribute heat more evenly.

The SlimStyle shines at a warm white, 2,700K color temperature, and is rated to last 25,000 hours, or well over twenty years at an average usage rate of three hours per day.

States that offer instant rebates include Connecticut, Indiana, Massachusetts, Michigan, Nevada, New Jersey, and Utah, among others. Rebates vary from region to region. In at least one region, Philips claims that the SlimStyle will now be available for just $1.97.

to read the “C/NET.com” article. 

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Cree Power LED Luminous Efficiency Achieves 300lm/W

Cree (Nasdaq: CREE)

March 27, 2014 

Cree announced the white power LED luminous efficiency achieves 303 lm/W, establishes a new milestone in the LED industry. This research results exceed the industry record (276 lm/W) that was set more than one year ago and much earlier than originally anticipated.

CREE 300lm-per-Watt 

Steven DenBaars, professor and co-director, Solid State Lighting and Energy Center, UCSB, said “This is truly an impressive accomplishment. Achieving this level of LED efficacy amplifies the potential for the solid-state-lighting industry to deliver smaller, lower-cost lighting solutions, and even larger-than-expected energy savings.”  Cree report shows that under the conditions of color temperature 5,150 K and 350 mA drive current, the measured LED luminous efficiency is 303 lm/W, and the testing was conducted under standard room temperature.

John Edmond, Cree co-founder and director of advanced optoelectronics said “Relentless innovation is a driving force at Cree as we continue the pursuit of 100-percent LED adoption,” he also added “Pushing the boundaries of LED performance is critical to enhancing LED lighting designs, and this 303 lumens-per-watt result will enable more cost-effective lighting solutions.”

To find out more about Cree LED lighting .

G7 Power Announces Benefits and Advancements in LED Lighting

by Brent Sauser

One area where Net Zero technology is advancing rapidly is with LED lighting.  What were considered obstacles a short time ago are no longer an issue.  has recently identified the benefits, efficiency, and cost effectiveness of using LED light.  On December 20, 2012, posted the following benefits and advances to LED lighting:

“There are many good reasons for using LED light bulbs. LED bulbs are energy efficient, robust and have a long lifetime. The use of LED bulbs for lighting has been limited up until now, mostly because LED bulbs color rendering had not yet been up to snuff. However, there have been significant improvements in LED technology in recent years and in many areas, the LED bulb now surpasses other bulbs.

Instant Light
LED bulbs switch on instantly and provide their full strength immediately, something other bulbs cannot brag about. The small components in LEDs are also great for dimming lights. With LED bulbs the light doesn’t change color when dimmed, which is what happens with incandescent and halogen lights.

Color Properties
The color properties of a light source are relevant to white light, and are described as color temperature, expressed in Kelvins. Today, a comprehensive selection of LEDs is available to the public. The light from LED sources is either warm (typically 2,700-3,000 K), neutral (3,500-4,500 K) or cold (4,500-10,000 K).

Unidirectional Light
LEDs project all their light forwards, whereas the most common light sources emit light in all directions. This is why LED bulbs are best suited to lamps that project light in one direction, such as spot lights and lamps that solely light downwards”.

G7 LED advantages over compact fluorescents:  [youtube]http://youtu.be/65mJp1jpVJo[/youtube]

  • Instant on at full brightness, even at lower temperatures
  • Do not contain Mercury
  • Guaranteed for life
  • Higher color rendition
  • Do not emit UV light that may fade fabrics
  • Much less susceptible to breaking
  • Do not have a greatly reduced lifespan when turned off and on frequently
  • More pleasing bulb appearance in fixtures”

to learn more about and