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Asia Report: Another Week of Woe for China's Solar Panel Manufacturers

By Oliver Wagg, Contributor
November 19, 2012   |   8 Comments

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8 Reader Comments
Comment
1 of 8
November 20, 2012
It will be a question of time until the Chinese manufacturer will start producing in Africa or in South America.
Comment
2 of 8
November 20, 2012
To me the primary issue has been a lack of Trina and other suppliers in staying competitive through reinvestment and innovation. Sunpower has historically had the ability to build 23.2% solar cells, yet their solar panels have stayed at 19.2% for many years. Trina is still at 14.5% while commercial solar cells are available at 20% efficiency. Lessons should be learned from the semiconductor industry. Flash drives for example are commodity parts, its been the improvement in overall efficiency or higher density that has brought down the price. Lots of flash drive manufacturers who did not maintain clear, precise quality improvement programs fell by the wayside.
Comment
3 of 8
November 20, 2012
@john-nistler,
I think you are confusing cells and panels.
A panel with 21% efficiency cells will likely only be around 18% efficiency with the panel as a whole.

So a 23.2% cell will likely produce a 19.2% panel.

Or so I understand it from my research.
Comment
4 of 8
November 20, 2012
Longwatcher, not confusing the issue at all. There are four points different between Sunpower's peak cell obtained and the panels using these cells. Basically over a 5 year period its apparent that Sunpower has not been able to increase the yield of their 23.2% solar cell otherwise they would be able to raise their panel from 19.2% up towards 20%. In addition, there are new panel manufacturing and testing procedures that allow better layout, wiring and placement that also helps to increase panel efficiency.

Essentially there are normal distributions in cell and panel production. By tightening or shifting your distribution you can obtain higher yields at certain efficiencies and thus offer a higher yielding panel. I have 20 years in the semiconductor experience prior to starting my solar company. I am quite aware of semiconductor manufacturing and the engineering and manufacturing improvements that can be done to raise yields.

Manufacturing of solar panels basically is no different then manufacturing of mother boards. You select the parts you are putting together and then wire them together. Improving how you wire helps to improve panel performance as an example. Etching the glass helps to reduce reflection and thus increases efficiency. Incorporating Antireflective glass helps to improve panel efficiency. While the so called cheaply made Chinese product has somehow been able to obtain 16 to 17% solar panels the so called better quality American and Japanese panels have not made significant strides in panel or cell efficiency.
Comment
5 of 8
November 20, 2012
Is there perhaps a cost issue. If I understand you correctly, you are saying the panel should be higher efficiency through better production. But I also know that sometimes the cost to get that little bit extra sometimes costs a whole lot more to achieve.

When purchasing panels the basic analysis has to include cost versus efficiency versus area available. If that extra relatively small efficiency would significantly raise the cost by relatively a lot then it would not be a good business decision.

I use the word relatively because it depends on the application. for utility scale, cost and total output are the deciding factors; but for home use cost is balanced by area available; and if for say military or space application, it is balanced by weight and survivability cost being less of a factor for the last.

If however, it is not an issue of cost and the upgrade in efficiency is only a matter of re-tooling or adding a new technique, then it becomes obvious that short-term profits are rearing its ugly head and superseding long-term potential, which is a common occurrence in at least the USA these days. There is also the possibility of some bad luck or mis-management which deprived the company of funds it needs to retool. That can be temporary or can kill a company.
Comment
6 of 8
November 20, 2012
Longwatcher, perhaps. But even in regards to commercial installations efficiency and performance matters. Land is not free.

Basically in all semiconductors, small increments in performance, yields and costs can be obtained on a quarterly basis. It requires a concentrated Quality assurance mind set from everyone, especially upper management. I have found that typically if upper management has a personal vendetta against the management of its competitors, lots of things get done that would normally not be done.

But if upper management becomes complacent, then the entire company falters and is "caught off guard". Yes, being blessed has a lot to do with it and even when you do everything right, it does not always mean you have the money and ability to compete when you need it. But not being prepared will definitely hurt you. I note that most of the US based panel manufacturers who are crying about Chinese dumping are based in California. An artificial market supported by a State Feed in tariff.
Comment
7 of 8
November 21, 2012
Why doesn't the Chinese government simply buy Chinese PV panels and grow their own PV-power utility industry? They need it at least as much as Europe, the US, India, etc. This would take some of the pressure off of building more coal power plants and nukes, and would alos reduce some of the pressure on water resources required for both coal and nukes.
Comment
8 of 8
November 21, 2012
You would think that someone by now could of figured out the possibility of PV network and power grid in the Mid East and North Africa. This power could be used for desalination and irrigation of the desert for food production. This would be a far better investment than the War Machine Mentality. Water is essential for life and war eliminates life.
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Oliver Wagg

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About: Independent journalist with a background in sustainable business and ethical finance, the renewable and low-emission energy sectors, climate-change science and ... more »

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