shares of fuelcell energy inc fell 9 in premarket trading to 370 after the company posted a wider loss for its second quarter and sales that fell well below wall street expectations the developer of clean energy technologies reported a quarterly loss attributable to the company of 301 million compared with a loss of 189 million a year ago revenue for the quarter rose 17 to 164 million but was still about half of the 326 million expected by wall street analysts according to factset the danbury connbased company said higher manufacturing variances and unrecoverable costs from construction on a project in california contributed to a wider gross loss for the quarter along with lower margin in its advanced technologies segment