Monthly Archives: September 2010

New Solar Technology Solar Window Coating

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Solar Window Coating

Poor Windows Just Sitting There Waiting to Get Sprayed.

There is a new technology in the solar power industry you may have not yet heard of. New Energy Technologies have just unveiled their new solar window coating. The see-thru spray consists of the worlds smallest organic solar cells, and is easily applied to glass window surfaces without blocking the sunlight from your home or business.

Some of the highlights of this technology are:

  • The solar cells in the spray are so small that they measure about a 1/4 the size of a grain of rice.
  • The coating is very easy to apply and does not need costly vacuum or high temperature techniques but can instead be sprayed on at room temperature.
  • The solar window coating conducts electricity from both natural light and does a much better job at generating electricity from artificial lighting. In fact it can generate up to ten fold the electricity from artificial light then traditional solar cells.

The aspect that really gets me excited aside from the ease of installation is the fact that it can generate quite a bit more power from artificial light then traditional PV cells. This is pretty cool because one of the disadvantages to today’s solar cells is it’s dependency on direct sunlight, this is a problem because it dictates where you need to place solar cells on your residence or business. What New Energy Technologies is proposing is that you will be able to use solar window coating on all of your glass windows and conduct energy from artificial light such as fluorescent as well, instead of just applying it to areas where there is direct sunlight.. How much energy and savings could be garnered from artificial light I am not quite sure about yet and will have to be seen, but the prospect non the less is interesting.

Unfortunately the companies website is a little vague on how the solar cells are actually able to do this, but it does state that in a scientific study:

“Under normal office lighting conditions, without the benefit of outside natural light from windows, New Energy’s ultra-small solar cells produced:

  • Almost 2-fold greater output power density than monocrystalline silicon, an established commercial solar cell material;
  • More than 8-fold greater output power density than copper-indium-selenide, known for its high optical absorption coefficients and versatile optical and electrical characteristics; and
  • More than 10-fold greater output power density than flexible thin-film amorphous-silicon, a popular ‘second-generation’ solar thin-film material.”

So, we will have to see if the energy generated from artificial light is enough to be considered any value on it’s own, but as an additional source of energy combining with the energy generated from direct sunlight, along with the ease of use, solar window coating may be a strong contender. Time will tell, and we’ll keep you updated.

What do you think about Solar Window coating, breakthrough, or meh? Be sure to let us know.

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Are Solar Rebate Programs Working?

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Over the last couple of years we’ve seen the solar industry boom due to solar rebate initiatives. These programs give a residential or business owner money back for solar power installations. Depending on what state you are in these rebates can be of a substantial amount of money, and they have been quite successful.

Not only have these programs increased the amount of photovoltaic systems throughout the US but the average cost of installing a new solar power installation has decreased dramatically from $9 to $6 since 2008. This is a huge difference in price.

This decrease in the cost of solar power is extremely important for the future as at the moment cost for a Kilowatt of power throughout the US ranges from 8 cents to just under 20 cents per KwH. These prices are set to dramatically increase in the upcoming years. Renewable energies however will continue to fall as more and more projects are completed. This will amount to vast savings in the next 50 years .

Not to mention the revenue and jobs solar power projects are bringing in as well. Take Pennsylvania for instance. According to The Mercury, “the share of solar power added to Pennsylvania’s grid increased by 350 percent and brought $1.4 million into the state’s economy in 2009.” As our economy and job market is in recession, generating new technology jobs, while generating clean renewable energy should be a main focus for the US.

We are also seeing a positive trend of schools embracing the need of investing in solar power for it’s environmental and economical benefits.

All in all, renewable energy is gaining more mainstream support everyday.

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New Technology May Cut Solar Power Costs Dramatically

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There’s been a recent and cool new breakthrough in solar power technology. Scientists at NREL have developed a way to use chemicals in order to etch a trillion microscopic holes in silicon wafers. So what does this mean for the solar industry? Actually it might mean quite a bit especially in solar power costs.

The scientists start with a cylindrical wafer of silicon and introduce chloroauric acid which creates nano-particles of gold that then etch into the silicon in such small diameter that it would take 40 of these holes to equal one human hair.

Light comes from the sun as protons and then can be converted into electrons for our use. The problem lies in the fact that the protons bounce off of surfaces and the potential energy is then lost. This is where the tiny little holes come in. Through the addition of these holes being etched into the gray silicon it turns incredibly black which will allow the silicon wafer to capture all the colors of light the sun throws at it.

Now black silicon wet etch technology is not perfect yet, and there are still a lot of studies to do. For one the wafer itself is able to capture more protons then traditional PV reflective surfaces. However NREL’s solar cells made with the solar wafer are still a few tenths of a percentage less efficient then traditional photo voltaic cells. NREL is now working on improving the effiency of the solar wafer.

But with this technology the cost of producing solar cells is greatly reduced, and simplified using the chemical bath, and forgoing a reflective surface. They have also found that the solar wafer requires about a third less of the energy as opposed to adding a reflective layer. Furthermore the solar wafer is much better for the environment as dangerous gases are used in the production of traditional solar cells such as silane, and nitrogen trifluoride. These gases are horrendous to the environment, and therefore cuts down on greatly on greenhouse gases. This will mean a significant drop in the cost for solar roof tiles and other photo voltaic devices.

Visit http://www.renewableenergyworld.com/rea/news/article/2010/09/cheaper-better-solar-cell-is-full-of-holes to read the full story.

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Solar Sushi the Best Thing to Happen to Soy Sauce Since the Bottle

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Solar Power Sushi

Renewable Energies Create The Best Tasting Soy Sauce You Can Count On That

Good news for sushi and solar aficionado’s alike. Kikkoman’s soy sauce factory located Folsom California has recently put in a car port solar system to run it’s factory.

Carport solar array installations are becoming more and more popular with businesses as they are
much easier to install, maintain, and make use of space that otherwise would not be used. The solar array installations themselves are mounted in a parking lot and wired to the business taking care of much or all of their power needs.

Another clear advantage for companies is that they will have a clear and well seen example to customers and business partners the level of commitment that the company is going through in order to make better use of clean and renewable energies and utilize state of the art technology to not only save money which will then be passed onto the customer but also the will of the environmentally conscious customer.

I think this is really important, as a consumer I try to use products and lean towards companies that are environmentally responsible as it shows to me a commitment to it’ customers wants and needs. Why is this you might ask? Well to me it’s no longer a world without options. My meaning is that if their is a company who offers you a product then you better believe that there is plenty other company’s offering the same product or service. It’s up to these companies to ensure safe and better business practices to it’s customers. Personally I always take into consideration who I’m doing business with, and just offering a product is not good enough anymore, you need to be offering me a product that I know is good plus the knowledge that I, as in me, am not supporting the destruction of the Eco system out of association.

This is something we will be seeing more and more of and I think it is part of good customer service to not just think of me as money but as someone with needs and ideas.

The Kikkoman carport solar system will generate 150,000 kWh annually and all the renewable energy not consumed will be sold back to the grid which will lower the solar power costs considerably. So next time you’re at your favorite sushi bar rejoice in the fact that the sun was influential in the making of that soy sauce your plunging your unagi in!

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