As we approach Earth Day, this subject has popped up again.

I have written about this in the past and it has been posted on many green blogs and news sites, I just want to summarize again.

Weather events are not climate; climate is the accumulation of weather events over an extended period of time. So a cold summer day doesn't prove global warming is false any more than a heat wave in winter proves it's true.

That said, the effects scientists predict from global warming are sometimes counterintuitive. While snow is associated with winter, warmer winter temperatures can result in more snow, since warmer air can hold more moisture. One of the most well-documented predictions about global warming is that it will result in more intense storms, in any season, but may leave longer droughts between those storms.

And again, the long term chart:

This article is a re-post from renewableenergyworld.com.

- Negawatts are the watts saved from not being used. Not only are they the cheapest source of New Energy but investing in them saves $2-to-$3 dollars for every dollar that is spent, savings that can be invested in New Energy megawatts.

One small problem: As reported in Energy Efficiency Services Sector: Workforce Education and Training Needs from researchers at the Lawrence Berkeley National Laboratory (LBNL) of the U.S. Department of Energy (DOE), there aren’t nearly enough people trained in doing Energy Efficiency to get the job done.

That small problem, however, presents an enormous opportunity. Thanks in part to a new awareness of savings opportunities and in part to funding in the American Recovery and Reinvestment Act (ARRA) of 2009, Energy Efficiency began growing last year and is expected to continue expanding in the U.S. over the next 10 years as fast as the nation can deploy training and education programs for the Energy Efficiency services sector (EESS) workforce. -

To find out more about the EESS, download the PDF by clicking the related link below.

The above image is just a generic can of paint and a solar installation, there is no color information currently for solar paint. I would guess it is a dark brown or slate color.


As you may have read here before, solar is good but efficiency is low. The value of solar is realized over time as the impact on the environment is low and especially low impact on air quality. As a very predictable source of energy, solar is understandably a winning source of renewable energy. There are many organizations working to create the next "best" thing in solar and one company thinks they are in the lead. NextGen has created "solar paint".

The NextGen solar paint is a liquid material that forms webs of nanoscale solar cells when it dries and it can be painted onto practically any surface. Developed by the Argonne National Laboratory, the solar paint beats out thin-film PV cells in efficiency because it captures more wavelengths of light.

The company is working with ambitious clean tech investors, hoping to get the prototype out of the lab and onto roofs, windows and walls soon. A commercial breakthrough of this type of clean energy technology.

Read more about the source research that NextGen is using by following the related link below.

GE has announced a 40 watt equivalent replacement bulb that uses LED technology for the light source. At a draw of only 9 watts to create the light, it is about 10% more efficient than a CFL for the same job. LED's do not contain Mercury and are therefore a greener choice in lighting.

While I am excited about this because it will lead to cheaper LED alternatives, I am sad about the current planned asking price. GE expects the bulbs to sell for around $40. A CFL with the same light output would be about $1 to $7 depending on the brand and store.

Although the life of a lightbulb is described in years, the average number of hours matters as well. GE says the new bulb will last 17 years with an average of 4 hours daily use. This means the new bulb should last about 24,800 hours, or 2.5 times as long as the equivalent CFL. Even at $7 for a CFL equivalent, the new LED costs more than twice as much for the same amount of useful hours.

I can't wait for this technology to become more mainstream. I remember in the 1990's there was a huge push toward CFL's and the prices were driven down dramatically by subsidies. This is the push LED needs if it is to become the new standard bulb in our daily lives.

Follow the related link below for more information.

As you may already know, it has been a few years since Philips dropped research into fluorescent technology in order to put it all into LED. This should make it very clear that LED is likely the next big thing in lighting.

Cree is a leader, if not "the" leader, in LED technology. As a leader in both product quality as well as light quality, you will find Cree LED's in many high end LED fixtures and devices.

Recently Cree has adapted a new contender for the lighting market, the LRM4 line of LED modules. Everything is included, so the manufacturers of the light fixtures don't have to be experts in semiconductors to make it work.

The LRM4 is also the debut of Cree's new "True White" lighting technology. By combining specially tuned red and yellow LEDs (you can actually see them in the image above) Cree is able to match the warm light from a 65 watt incandescent bulb quite well. Other advantages over fluorescent lights include longer lifespan (over 12 years before the bulb maximum output drops more than 70%) full dimming capability and even higher efficiency.

Of course, the disadvantage is likely to be the price, which Cree wouldn't disclose in a recent interview.

The lights are directional, so they're only suitable for directional lighting applications like in-ceiling lighting and desk lamps. The modules will be built into various designs by manufacturers and then those products will be available for sale "soon," probably at specialty lighting stores first.

Eventually, these lights will be arranged in diffusers, or other mounting situations that will allow a more disbursed light. For now, the spot is the only option.

There is a lot more involved with spreading the light of an LED, as the nature of a Light Emitting Diode Semiconductor is to release light in a single coherent pattern. Lasers are made from LED for this reason. As light is diffused or spread out, the brightness drops greatly. This makes an interesting puzzle for LED manufacturers and designers. The challenge is to light more area without simply adding an array of LED's and at the same time without losing a significant amount of light with reflectors or filters. Cree and others are getting very good at this.

Keep your eye out for quality LED lighting to work its way into your life very soon.

Click here for the DOE LED description, it is short and clear.