I have warned many times in my books (Complete The Art of Investing from Amazon.com) several years ago that we do not have any future in solar energy.
1. Cannot compete with China's low prices. Fixed the problem by banning them.
2. Cannot compete with better technology from EU.
3. Solar is now not cost effective (actually not even before the low oil price). It only works with subsidies.
When one big company died after a huge government financial assistance (our tax money), there will not be another one.
"Buy at dips" of a bankrupting company is the same as throwing your money to the ocean.