Consolidated Statements of Operations (Unaudited) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Jan. 31, 2013		Jan. 31, 2012
Revenues (1):
Product sales	$ 29,065		$ 26,202
Service and license revenues	4,969		3,398
Advanced technologies contract revenues	2,324		1,737
Total revenues	36,358	[1]	31,337	[1]
Costs of revenues:
Cost of product sales	29,944		23,360
Cost of service and license revenues	6,485		4,300
Cost of advanced technologies contract revenues	2,240		1,573
Total costs of revenues	38,669		29,233
Gross (loss) profit	(2,311)		2,104
Operating expenses:
Administrative and selling expenses	5,432		3,764
Research and development expenses	3,327		3,783
Total costs and expenses	8,759		7,547
Loss from operations	(11,070)		(5,443)
Interest expense	(566)		(630)
Income (loss) from equity investment	46		(362)
License fee and royalty income	0		424
Other income (expense), net	(282)		196
Loss before provision for income taxes	(11,872)		(5,815)
Provision for income taxes	(7)		(199)
Net Loss	(11,879)		(6,014)
Net loss attributable to noncontrolling interest	198		71
Net loss attributable to FuelCell Energy, Inc.	(11,681)		(5,943)
Preferred stock dividends	(800)		(800)
Net loss to common shareholders	$ (12,481)		$ (6,743)
Loss per share basic and diluted
Net loss per share to common shareholders	$ (0.07)		$ (0.05)
Basic and diluted weighted average shares outstanding	187,553,306		139,555,596

[1] Includes revenue from a related party. Refer to Concentrations in note 1 to the financial statements.