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CIGS | Sun Is The Future

Posts Tagged ‘CIGS’

26 April

Incentive For Solar (5)-Solar Shingle


If you are in favor of renewable/CLEAN energy, please sign the petition page showing support for FIT/CLEAN Program at http://sunisthefuture.net/?page_id=1065 Thank you.

For many years, in my fantasy world, all homes and buildings would be self-sufficient in terms of energy use, via solar cells in roof shingles, windows, and even paint. I have discovered that this no longer needs to remain in the fantasy world, but now is ready to surface into the reality, thanks to companies such as Dow Chemical, DowSolar’s solar shingles. Solar shingled roofs have a deep dark, purplish-blue color, and therefore look quite similar to other roofs. Solar shingles (photovoltaic shingles) are solar cells designed to look like conventional asphalt shingles.  There are several varieties of solar shingles, including shingle-sized solid panels that take the place of a number of conventional shingles in a strip, semi-rigid designs containing several silicon solar cells that are sized more like conventional shingles, and newer systems using various thin film solar cell technologies that match conventional shingles both in size and flexibility.  Currently, Solar shingles are manufactured by companies including (Ecotech) ecotechshingles.com, SunPower Corporation, United Solar Ovonic (Uni-Solar), Solar Components Corporation, Atlantis Energy Systems, and Dow Chemical.

All photovoltaic power is produced in the form of direct current (DC). Homes use alternating current (AC). Therefore part of the cost of installation of solar shingles is the price of an inverter to make the conversion.

Older solar shingle designs were more expensive to install than traditional PV panels, but new, more efficient designs such as thin-film copper indium gallium selenide (CuInxGa(1-x)Se2) cells can be installed in 10 hours, compared with the 22 to 30 hours required for the installation of traditional panels. The lower cost of installation dramatically reduces the cost of solar power implementation.

Large homebuilders in California like Lennar are partnering with SunPower to offer new construction solar homes that have solar systems installed prior to moving in. Reducing the overhead and using solar roof tile technology makes solar a standard option like granite countertops, making solar an affordable solution to reduce electricity costs.

I have prepared a video clip for  you, available at http://www.youtube.com/watch?v=qCClje-k7g4   to get you used to the idea of Solar Shingles.



Please look into the possibility of how you may be able to incorporate these solar shingles into your life/homes in conjunction with all federal tax credits, state incentives mentioned in previous posts of Incentive For Solar series.  More clips will be forthcoming.  We are certainly living in a very dynamic world!


Posted by sunisthefuture-Susan Sun Nunamaker, sunisthefuture@gmail.com
Homepage: http://sunisthefuture.net http://sunisthefuture.com http://sunisthefuture.org
Some of the data and information above are provided by Wikipedia

3 April

What Is Solar Cell (7)


If you are in favor of renewable/CLEAN energy, please sign the petition page showing support for FIT/CLEAN Program at http://sunisthefuture.net/?page_id=1065 Thank you.

By now, dear readers/friends, you are probably wondering how much of the world’s energy usage is based on solar energy. Despite the fact that it is by far the most “clean, safe, abundant, and least likely to contribute to war among nations” form of energy, it is only taking up about 0.5%

World Energy Usage Chart (Note:Solar heat of 0.5%, Wikimedia Commons)

of the world’s energy usage. The reason is cost!  That is why scientists and engineers throughout planet earth are making their greatest effort in figuring out /experimenting with material and ways of applying technology to reduce the cost of solar energy/technology.  Thin film technology reduces the amount of material required to create a solar cell, but it also reduces the energy conversion efficiency.  Nevertheless, thin film silicon cells have become popular due to cost, flexibility, lighter weight, and ease of integration, compared to wafer silicon cells.  In this next and final clip on the series of “What Is Solar Cell”,  you will see CIGS (copper indium gallium selenide. some also call it CIGSS or (di)selenide, but most literatures refer to it as CIGS), a direct-bandgap material, with the highest efficiency (~20%) among thin film materials.

You will find this clip at http://www.youtube.com/watch?v=SMnx5tFrDDc&feature=related or simply click below:


It is encouraging that solar industry had been growing exponentially in recent years and its cost had been driven down tremendously.  In addition to decreasing the cost, increasing the efficiency of the material, and increasing its applications ( building integrated photovoltaics such as roof, window glass, or paint, using thin film solar material will drive down the cost of solar electricity further and eventually be able to get 20% of the energy from solar (forecasted by some scientists and engineers)) , there had been great amount of discussions in various types of incentive programs that may be implemented in the effort of driving down its cost and increasing its economic feasibility.  In the final analysis, in order to increase the percentage of global energy use from solar energy, it is up to all of us earthlings to make every effort in bringing down the cost of solar technology, whether through scientific technological research and development or through incentive programs.  I will reserve the topic on various incentive programs in future posts. Until then, I bid you a clear and sunny day tomorrow~

Posted by sunisthefuture-Susan Sun Nunamaker,sunisthefuture@gmail.com
Homepage: http://sunisthefuture.net http://sunisthefuture.com http://sunisthefuture.org


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