EarthLED releases a new consumer LED light bulb

by Cristina Foung

My favorite green product of the week: the EarthLED ZetaLux 7 Watt LED

What is it?
The EarthLED ZetaLux is a 7 watt LED light bulb. With a standard medium base, the bulb is a replacement for any incandescent light bulb. EarthLED estimates that it will cost as little as $2.00 to run the bulb for 8 hours every day for a year.

Why is it better?
The ZetaLux uses 1/10th the amount of energy and produces roughly the same amount of light as a 50-60 watt light bulb. It has a direct light path (which in some ways takes a little getting used to) but according to EarthLED, that means the bulb has a 95% luminary efficiency (the bulb does not direct any light toward the light fixture).

I’ve been using the ZetaLux for a week now, and it provides quite a bit of bright light in a table lamp. It’s completely quiet (which was a complaint some folks had with the EarthLED EvoLux) and although the “warm white” bulb produces light that is not as warm as an incandescent, the quality of the light is quite nice.

Where can you find it?
You can order the ZetaLux directly from EarthLED for $49.99 in either warm or cool white.


Boca Raton, FL, November 18, 2008 — Advanced Lumonics, LLC, an early leader in the direct replacement LED light bulb market through its consumer oriented EarthLED brand announces its latest product, the EarthLED ZetaLux.Following on the success of the EvoLux launch earlier this year, the EarthLED ZetaLux LED light bulb offers a price/performance ratio unmatched in the industry. The ZetaLux only consumes 7 watts yet offers performance comparable to a 50-60 watt light bulb. With a price of under $50 USD, the ZetaLux offers an unprecedented payback time of just over 2 years when operated 8 hours per day.

ZetaLux is built upon the latest LED Engine from CREE allowing for amazing efficiency, high output and a new benchmark in Color Rendering Index (CRI) performance. CRI is a a good way to determine the quality of light and its faithfulness to render colors correctly, EvoLux features a a CRI of 75 for cool white and 80 for Warm White making them exceptional for LED Light Bulbs.

The ZetaLux has been designed to the most exacting standards of any LED light bulb currently on the market. From its oversized aluminum heat sink to its flame retardant plastic, to its shatter proof lens, the ZetaLux is built to perform safely and efficiently for over 50,000 hours. The ZetaLux’s rugged design also allows it to perform under the harshest conditions including frigid -50 degree frost all the way up to scorching 180 degree heat with 95% humidity.

Advanced Lumonics is also announcing enhanced versions of their successful EvoLux line. All EvoLux bulbs now feature lumen outputs exceeding 1000 Lumens along with a higher CRI and even greater efficiency. These enhancements further cement the position of EvoLux as the most advanced direct replacement LED light bulb on the market today.

The ZetaLux along with the new enhanced EvoLux will be among the first direct replacement LED light bulbs to achieve UL certification later this year along with compliance with new DOE EnergyStar standards for LED lighting in 2009.

Both ZetaLux and enhanced EvoLux are available today from The EarthLED Store and Advanced Lumonics distribution partners.

The new ZetaLux and enhanced EvoLux join a fresh new lineup of EarthLED LED Lighting products for 2009 including:

TriSpectra 3 – The World’s Most Powerful LED Based MR-16 Solution
DirectLED-HL – The First Direct LED Replacement for G4 Halogen Lamps
DirectLED-PL – The First Direct LED Replacement for PL Fluorescent Lamps
DesignoLux – LEDs Designed Specifically for Decorative Lighting
GrowLED – A Comprehensive Range of Affordable LED Grow Lights

For additional information on ZetaLux, EvoLux or other EarthLED LED Light Bulbs please visit or call 1-877-855-1625.

About Advanced Lumonics, LLC

Boca Raton based Advanced Lumonics, LLC is an early leader in the direct replacement and professional Solid State Lighting (SSL) market. Through their popular EarthLED brand, Advanced Lumonics has rapidly increased awareness of LED lighting as a true alternative to CFL and Incandescents in the consumer marketplace and has become a leader in this space.

Besides her green products column on Cleantech Blog, Cristina is a passionate advocate for green living at the Green Home Huddle at, which focuses on electric cars, organic personal care, and other green products.

Got a (LED) light?

by Cristina Foung

My favorite green product of the week: the GeoBulb LED Light Bulb from C. Crane

What is it?
The GeoBulb is an LED light bulb that uses less than 8 watts of electricity to produce 14% more light than the average 60 watt incandescent bulb. It’s roughly the same size and shape as an incandescent bulb and serves as a direct replacement for any indoor fixtures.

Why is it better?
First of all, the energy savings of using LED light bulbs over incandescent bulbs or even compact fluorescent bulbs. Not to mention, the bulb has a life span of 30,000 hours (which at continuous use, that would work out to be about 3 years; even using the bulb 8 hours a day, you’d still get 10 years out of it).

The reason the GeoBulb is a great option is because the quality of light and the brightness is in fact similar to an incandescent. I got a chance to check out some bulbs at West Coast Green. I was amazed at how bright they were, how cool to the touch they were, and how they didn’t buzz at all.

Where can you find it?
The GeoBulb does have a steep up-front cost of $119.95. You can order it through the C. Crane website (but it appears to be out of stock until December).

Besides her green products column on Cleantech Blog, Cristina is a passionate advocate for green living at the Green Home Huddle at, which focuses on electric cars, organic personal care, and other green products.

LED There Be Light

by Richard T. Stuebi

As some of my long-time readers may know, I have never been a truly ardent fan of compact fluorescent lighting (CFL). Why?

1. Probably most importantly to me, in my experience with CFLs, I haven’t been satisfied with their start-up characteristics. They take a little while to “warm up” to full luminescence, and until then, the light seems very sickly to me. It actually makes me a bit nauseous. I know that better quality (i.e., more costly) CFLs perform better than cheaper generics, but even CFLs from General Electric (NYSE: GE) that I’ve bought still don’t turn on as well as I have come to expect from four decades of living with incandescents.

2. Except for some new (and considerably more expensive) products, CFLs generally don’t work with dimmers. I once found this out the hard way — snap, crackle, pop. I don’t know about you, but a lot of the light circuits in my house are on dimmers, and as a result I continue to run incandescents on them.

3. It is becoming more well-known that CFLs contain mercury, and hence their disposal is a real issue. Even worse, if one were to break, the release of mercury represents a significant risk — at best a big clean-up nuisance.

4. CFLs aren’t cheap. True, CFL prices are coming down to become closer to the levels of old/inefficient incandescents, but they are still substantially more costly. For lights that are rarely used, the extra investment doesn’t make much sense to me, as the energy actually saved is small.

So, I’ve been eagerly awaiting the emergence of LED (light-emitting-diode) products for consumer application. I like the quality of LED light, and LEDs don’t have the mercury issue, so it seems like the superior long-term lighting solution.

I’ve been told that household LED lighting is still many years away, but at least some products are trickling into the marketplace. For instance, see EarthLED Lightbulbs, which are available at Think Geek. Clearly, they are still a niche item for the early adopters, as they cost $60-100 per unit, but at least their emergence into the market now puts consumer LED lighting on the gameboard, hopefully on a quicker path of cost reduction as learning curve and scale production effects are achieved.

Since LEDs have virtually infinite lifetimes, in the future, there will no longer be a need to make lamps with removable bulbs in sockets. Savvy marketers out there should begin working to overturn the old paradigm of reusable lamp/disposable bulb, making way for LED lamp fixtures that are inherently designed to capitalize on the unique and compelling advantages offered by LED lighting.

Richard T. Stuebi is the BP Fellow for Energy and Environmental Advancement at The Cleveland Foundation, and is also the Founder and President of NextWave Energy, Inc.

Go Toward The (LED) Light

by Cristina Foung

My favorite green product of the week: the EarthLED EvoLux S LED light bulb

What is it?
A while back, I wrote about the EarthLED CL-3, but that was before I knew about the EvoLux S. Let me tell you…this is quite a bulb. Here are the basics: it’s a 13-watt LED light bulb that puts out 900 lumens. It uses an advanced CREE 13 watt light engine and has a standard base, so it can fit pretty much anywhere a standard incandescent (or CFL) can.

Why is it better?
Well, for the amount of light it puts out, it uses far less electricity than incandescent or CFL bulbs use (EarthLED says that the EvoLux S is comparable to a 100-watt incandescent). So clearly in terms of energy efficiency, it wins hands down.

Based on a formula to calculate the lifetime cost of a light bulb, a 100-watt incandescent light bulb which puts out 950 lumens and runs for 1,500 hours will cost you about $11.04 per megalumen-hour. Although the upfront cost of LED light bulbs is much higher, turns out for the EarthLED EvoLux S, you’ll spend only $3.22 per megalumen-hour (assuming $0.10/kWh). EarthLED reports that it only costs $5.70 to run an EvoLux S for a year.

And finally, it’s just a good light bulb. I’ve had mine for about a week – the light is not as diffuse as an incandescent or CFL but it’s amazingly bright. Doing the touch test, an incandescent got hot within 5 minutes of having the lamp on. The CFL warmed within about 7 minutes. The LED? Even after having it on for an hour, I could put my hand on it and it was cool.

The only drawbacks of note that I’ve experienced (and that others have confirmed) are a) light diffusion (I think the bulb would be a little better suited in an overhead downlight rather than in a bedside table lamp); and b) you can hear the fan. It’s pretty quiet. But if you’re reading by it, you can hear it hum. Overall, it’s a great option for a bright LED light bulb that’s available now.

Where can you find it?
You can get your very own EvoLux S in warm or cool white for a bargain price of $79.99 (ouch, I know, but think of the lifetime savings) from the EarthLED online store.

Besides her green products column on Cleantech Blog, Cristina is a passionate advocate for green living at the Green Home Huddle at, which focuses on electric cars, energy efficient appliances, and other green products.