Acorn Energy, Inc. (Acorn) is a holding company. The Company is engaged in providing energy infrastructure asset management. The Company operates in three segments: Energy & Security Sonar Solutions (through its DSIT subsidiary), GridSense and USSI. In addition, its Other segment represents information technology (IT) and consulting activities at its DSIT subsidiary. The Company through its wholly owned operating subsidiaries provides energy and security sonar solutions, smart grid distribution automation, and energy and security sensor systems. On February 15, 2012, the Company acquired OmniMetrix, LLC. In March 2011, the Company sold its 25% interest in HangXing International Automation Engineering Co. Ltd. (HangXing). On August 31, 2011, the Company announced that it has completed the sale of CoaLogix, Inc.