Shares of FuelCell Energy (FCEL) have gained 4.6% over the past four weeks to close the last trading session at $10.70, but there could still be a solid upside left in the stock if short-term price targets of Wall Street analysts are any indication. Going by the price targets, the mean estimate of $29.61 indicates a potential upside of 176.7%.The average comprises six short-term price targets ranging from a low of $5 to a high of $60.06, with a standard deviation of $21.26. While the lowest estimate indicat ...