BOSTON ( TheStreet) -- Solar stocks have heated up, driven by optimism about industry consolidation and an economic recovery. The Guggenheim Solar ETF (TAN) has risen 5.9% in four weeks. The fund's top holdings, First Solar (FSLR), Trina Solar (TSL), MEMC Electronic Materials (MEMC), SolarWorld (SWV) and JA Solar (JASO) have gained as much as 12%. Still, there are preferred plays in the solar space.The safest way to invest in green energy is through exchange traded funds, such as the Guggenheim Solar ETF. Other notable options are PowerShares WilderHill Clean Energy Portfolio (PBW) and the Van Eck Global Alternative Energy ETF (GEX), which emphasizes large-cap stocks.
Top Three Solar Stocks for Earnings Season
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