The once high-flying solar power sector is headed for tough times, as a combination of slack demand and massive oversupply is leading to plummeting prices and profits for solar panel makers. The past year was already grim. The Guggenheim Solar (TAN) exchange-traded fund is down 60% since January and sits even lower than it did following the crash in 2008. Two high profile companies have gone bankrupt in the United States — government-backed Solyndra and Evergreen — and analysts anticipate more failures ahead. “Solyndra was just the beginning,” said Jessie Pichel, head of clean energy research at the investment bank Jefferies & Co. “We’re going to see a lot of companies go bankrupt.” This article is a linkout.