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Stop buying Si wafer based PV NOW! Price-crash a-coming...

post #1 of 3
Thread Starter 
While googling around today I discovered this news that Nanosolar has (after long being talked about) gone into mass production of what will surely be the death of grown crystal wafer solar panels, both as a technology and smash the price of solar panels.

See the article with pictures of the factory!

www.pv-tech.org/news/_a/printed_pv_nanosolar_unveils_640mw_utility-scale_panel_fab_high-efficiency_/

In the above article Nanosolar shows off photos of its new Utility PV production line near Berlin that is fully automated and at full tilt can turn out a panel every 40 seconds...  TUV inspectors said it was “a factory unlike any we've ever seen”.

The process is continuous, enabled by the printing of CIGS semiconducting "ink" on a metal film from one roll to another, like printing a newspaper.  The rolls are then later cut up into cells and these are made into panels.

The first panels are aimed at utility companies as they are designed for very high voltage strings (up to 1500V) as this keeps the wiring cost down.

Nanosolar's CIGS cell efficiency is confirmed over 16%, completely breaking all expectations from last year of around 6%. This combined with the inherently low manufacturing cost (compared with grown crystal Si panels) means the old wafer panels are soon to be commercially dead in the water.

So... do you buy expensive Si wafer panels now or wait a couple of years for the much cheaper CIGS panels for your roof?
post #2 of 3
Perhaps you're right. I too have seen the Nanosolar video and wrote a blog about it at solar.calfinder.com. But I just want to point out a few things...Again, Nanosolar's breakthrough with CIGS solar cells is awesome and potentially amazing, but that 16 percent cell efficiency is for the solar cells alone. Module, or panel, efficiency has been tested by NREL at 11 percent. Which alone is unlikely to dramatically uproot silicon wafer panels, where top modules are averaging 15-17 percent. BUT Nanosolar's amazing production process cannot be ignored. From what I read they claim to produce a panel every 10 seconds...up to 10 times faster than the silicon wafer panels and three times faster than First Solar...and that 11 percent module efficiency just edges out First Solar's current average of about 10.7 percent. (Although I also read yesterday on Wikipedia that First Solar and NREL had tested CdTe panels with 12.5 percent efficiency...in the laboratory?) Obviously things are very competitive in the thin-film market...so we'll see how fast they bring down silicon-PV panels. But I doubt it will be an overnight/crash type event...
post #3 of 3
I am also watching this company. They are said to be quite secretive about all aspects of their process/technology/costs/plans and whatever else.

If they can get their costs down (and sales prices as well) it may be interesting.

Like was noted, this is a rapidly developing field with many companies making announcements almost daily. Some of those announcements may even be true! 
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