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Noncontrolling interests
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9 Months Ended | 12 Months Ended | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Sep. 30, 2013
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Dec. 31, 2012
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| Noncontrolling Interest [Abstract] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| Noncontrolling interests | Note 6 Noncontrolling interests Shares of restricted common stock issued under Ilios's equity compensation plan, but which have not yet vested, have not been included in calculating the percentages in this Note 6. 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 nine months ended September 30, 2013 and 2012. Net loss attributable to Tecogen Inc. and Transfers (to) from the Noncontrolling Interest Nine Months Ended September 30,
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Note 11 Noncontrolling interests
As of December 31, 2010, Tecogen owned 63.0% of Ilios. During the year ended December 31, 2011, Tecogen purchased 1.5 million 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 million 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 million 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 years ended December 31, 2012, 2011, and 2010. Net loss attributable to Tecogen Inc. and Transfers (to) from the Noncontrolling Interest Years ended December 31,
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