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Solar stocks have been massacred lately after chinese have temporarily halted new solar plants after their economy crashed, and this is the time to cash in on the blood bath. Guggenheim Solar ETF (TAN) is an exchange traded fund that has encompasses up to 20 companies in the solar industry which gives you diversification. No need to bet on one company when you can bet on the entire solar industry.
TAN also comes with a 2.5% annual dividend, which is higher than most savings accounts. Its an investment of a lifetime.