I agree with ggnykk that "discussion of Chinese PV panel cheaper than SolarCity's panel are pretty pointless"
Perfectlogic, you can come up with all kind of calculations etc, etc. for all you are worth, and as many times three-posts-in-a-row as you want. To be honest I am not reading all those posts. As it is not the current cents-per-Watt, lobbying / corruption in legislation or what the chinese do that matters.
This is a very very fast changing market, where
strategic positioning and
innovation are far more important than these details.
Fact is that both residential and utility solar installations are growing, growing faster every year. It is exponential growth.
File:PV cume semi log chart 2014 estimate.svg - Wikipedia, the free encyclopedia
Growth of photovoltaics - Wikipedia, the free encyclopedia
And as Solar keep growing, prices will keep going down and the the market where Solar is economic will grow even much faster than prices will go down.
In some cases the reason to install solar it is due to lower costs, in some cases it is to be prepared in case of power ourtages, in some cases it is out of a choice not to add to poluting the world. And I can easily think of several more. The fact that there is a very diverse set of reasons to move to Solar is why it will be very hard to stop that trend. Some stakeholders invested in fossile fuels can try to delay growth by lobbying legislation, spreading FUD etc, etc. However delay is their best case, and will just make it hurt more for them once the inevitable happens. Actually IMHO we are already way past the tipping point.
I think very few people doubt that solar will grow, and also very few people will not agree that it is a
strategically great move for Tesla to position itself there now. Solarcity offers a big marketshare in USA, an almost-ready Solar-panel-GigaFactory, innovative solar-cells and an installation force. Thus most will agree say that SolarCity is the natural choice and indeed perfect strategic fit.
You state :
"Just because the panel is only 20% of SCTY's cost doesn't mean it's pointless to discuss. Every tiny bit of margin counts, especially in the business SCTY is in. If their competitors have an advantage in buying modules from the Chinese then this is a problem for SCTY. Shutting down the plant after finding out it isn't competetive is also a problem."
There are no signs that the solarpanels that will be comming from the highly automated factory will be too expensive. You spread such fear, but do you have knowledge what the production costs at the new factory will be ? Of what innovative technology and production methodes Tesla and SolarCity are working on... Or what will happen with import taxes for chinese panels in the next 5 years ?
On that last subject I guess nobody knows, but on all the other the Tesla & SolarCity board know all, and we know very little. I trust that the board knows what they are doing over you just doing some wild guessing.
Note that exponential growth means that being in even just a little bit earlier can make a very big difference on the later market-share and profits. So actually even the SCTY aquisition price does not matter to much. Many do call this aquisition a no-brainer indeed, some understand that now, others will only once the exponential solar growth is a bit further along.
For those that are in TSLA or SCTY for the long run THAT is all that counts.
Those that were hoping to gain from TSLA (or SCTY) in short term have had plenty of warnings that short-term profit is not an expression to be found in Elon's book.