Quarterly report pursuant to Section 13 or 15(d)

Noncontrolling interests

Noncontrolling interests

3 Months Ended

Mar. 31, 2013

As of December 31, 2010 Tecogen owned 63.0% of Ilios. During the year ended December 31, 2011 Tecogen purchased 1,500,000 shares of Ilios common stock at $0.50 per share for an aggregate amount of $750,000 which increased Tecogen's ownership interest to 67.4%.

During the year ended December 31, 2012 Ilios sold 1,000,000 shares of common stock to an accredited investor at $0.50 per share for an aggregate amount of $500,000. Also during the year ended December 31, 2012, Tecogen purchased 1,000,000 shares of Ilios common stock at $0.50 per share for an aggregate amount of $500,000. The net result decreased Tecogen’s ownership interest to 65.0%.

The table below presents the changes in equity resulting from net loss attributable to Tecogen and transfers to or from noncontrolling interests for the three months ended March 31, 2013 and 2012.

Net loss attributable to Tecogen Inc. and

Transfers (to) from the Noncontrolling Interest

three months ended March 31,



	2013			2012
Net loss attributable to Tecogen Inc.	$	(860,393	)	$	(438,313	)
Transfers (to) from the noncontrolling interest
Increase in Tecogen's paid-in capital upon the sale of 1,000,000 Ilios common shares	—			289,606

Net transfers to noncontrolling interest	—			289,606
Change from net loss attributable to Tecogen Inc. and transfers to noncontrolling interest	$	(860,393	)	$	(148,707	)

- Definition

The entire disclosure for noncontrolling interest in consolidated subsidiaries, which could include the name of the subsidiary, the ownership percentage held by the parent, the ownership percentage held by the noncontrolling owners, the amount of the noncontrolling interest, the location of this amount on the balance sheet (when not reported separately), an explanation of the increase or decrease in the amount of the noncontrolling interest, the noncontrolling interest share of the net Income or Loss of the subsidiary, the location of this amount on the income statement (when not reported separately), the nature of the noncontrolling interest such as background information and terms, the amount of the noncontrolling interest represented by preferred stock, a description of the preferred stock, and the dividend requirements of the preferred stock.

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