Investing probably never entered Robert Frost's mind when he composed his famous poem "The Road Not Taken." However, one of his key points -- taking paths that most people don't can often be highly rewarding -- certainly applies to investing.

Contrarian investing is based on this principle. Buying shares of companies that many others don't view positively can pay off big-time in some cases. I think there are several contrarian plays that especially stand out right now. Here are three stocks going against the grain of conventional wisdom that could deliver huge gains for long-term investors.

You've no doubt heard the predictions that fossil fuels are going the way of the dinosaurs. Renewable energy will replace oil and gas over the coming years if this take is correct. That would seem to make stocks like Occidental Petroleum (NYSE: OXY) poor choices for long-term investors.

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Source Fool.com