renewable energy stocks

At the top of my list of dropped stocks today you'd expect the banks. But what comes next...what, would you guess, is the biggest loser outside of the banking industry in my portfolio.
Is it the big corporations like GE who have a huge hand in banking and financing? The luxury stocks like Apple who sell expensive items that might be less appealing in a recession? No and No. It's the solar stocks.
Why? Why on earth would a crisis in the financial sector kill these renewable energy stocks.