Here's a chart spotted by investor Sunil Paul of Spring Ventures and found in the Washington Post document cloud. It's a data-rich slide withsolarpanel price estimates from market analysts at a variety of investment banks, including UBS, Barclays, and Deutsche Bank, versus the actual price of crystalline silicon solar modules from China.

I've studied this thing and here are the conclusions I can garner:

None of these bullet points are exactly revelatory to those in the solar industry. But this is still a good graphic representation of the solar price drop. Of course, the trade claim posed by Solar World in recent weeks is that at a certain price threshold, this constitutes an example of dumping.

By the way, that quote -- "It is difficult to make predictions, especially about the future" -- and its many variations has been attributed to everyone from Mark Twain to Yogi Berra to Niels Bohr.