Zynga downgraded to 'neutral,' and First Solar is downgraded to 'negative.'
Coal-related stocks would get a boost, while alternative-energy names would likely become short candidates.
Stocks are lower at midday and the sluggish trading environment persists as investors remain on the sidelines ahead of Bernanke speech.
Stocks slide following the European Central Bank president's press conference.
Europe accounts for a major portion of the panel manufacturer's global sales.
Companies face major hurdles as European support for the industry lags.
Combined with the rapidly declining cost of solar, government support should result in a fast expansion of the solar industry in the country.
The market rebounds on talk of more Fed stimulus, a stronger European banking union.
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