CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011
ASSETS
Cash	$ 1,933	$ 3,056
Accounts receivable, net	986	4,228
Costs in excess of billings	392	132
Inventories	297	167
Deposits	820	262
Other current assets	290	328
Total Current Assets	4,718	8,173
Property and equipment, net	480	544
Other assets	68	72
TOTAL ASSETS	5,266	8,789
LIABILITIES AND STOCKHOLDERS' DEFICIENCY
Accounts payable	1,338	2,640
Convertible debt, net - current portion	2,926	1,250
Billings in excess of costs	3,982	5,131
Derivative liability, current portion	552	706
Other current liabilities	1,672	1,833
Total Current Liabilities	10,470	11,560
Long Term Liabilities:
Derivative liability	80	101
Convertible debt, net	0	1,571
Other long term liabilities	114	160
Total Long Term Liabilities	194	1,832
Total Liabilities	10,664	13,392
Commitments and contingencies (Note 8)
Stockholders' Deficiency:
Common Stock, $.001 par value: authorized - 425,000,000 shares at March 31, 2012 and December 31, 2011; issued: 91,219,622 shares at March 31, 2012 and 85,167,098 shares at December 31, 2011; outstanding: 91,085,825 shares at March 31, 2012 and 85,033,301 shares at December 31, 2011	91	85
Additional paid-in capital	109,470	108,727
Accumulated deficit	(115,055)	(113,510)
Treasury stock, at cost: 133,797 shares at March 31, 2012 and December 31, 2011	(18)	(18)
Total ThermoEnergy Corporation Stockholders' Deficiency	(5,393)	(4,597)
Noncontrolling interest	(5)	(6)
Total Stockholders' Deficiency	(5,398)	(4,603)
TOTAL LIABILITIES AND STOCKHOLDERS' DEFICIENCY	5,266	8,789
Series A Convertible Preferred Stock [Member]
Stockholders' Deficiency:
Preferred stock value	2	2
Series B Convertible Preferred Stock [Member]
Stockholders' Deficiency:
Preferred stock value	$ 117	$ 117