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Condensed Consolidated Statement of Changes In Equity (Unaudited) - 3 months ended Mar. 31, 2017 - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-In Capital [Member]	Warrants [Member]	Accumulated Deficit [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive Loss [Member]	Total Acorn Energy, Inc. Shareholders' Equity [Member]	Non-Controlling Interests [Member]	Total
Balances at Dec. 31, 2016	$ 301	$ 99,767	$ 1,600	$ (97,046)	$ (3,036)	$ (254)	$ 1,332	$ 555	$ 1,887
Balances, shares at Dec. 31, 2016	30,125,000
Net loss				(220)			(220)	(50)	(270)
Accrued dividend in OmniMetrix preferred shares								(25)	(25)
Shares granted in lieu of director fees	$ 1	7					8		8
Shares granted in lieu of director fees, shares	44
Stock option compensation		13					13		13
Balances at Mar. 31, 2017	$ 302	$ 99,787	$ 1,600	$ (97,266)	$ (3,036)	$ (254)	$ 1,133	$ 480	$ 1,613
Balances, shares at Mar. 31, 2017	30,169,000

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