Related parties	3 Months Ended
Mar. 31, 2016
Related Party Transactions [Abstract]
Related Parties	Related Parties EuroSite Power, Tecogen, Ilios Inc., or Ilios are affiliated companies by virtue of common ownership and common leadership. The Company purchases the majority of its cogeneration units from Tecogen, an affiliate company sharing similar ownership. In addition, Tecogen pays certain operating expenses, including benefits and payroll, on behalf of the Company, and the Company leases office space from Tecogen. The Company's lease with Tecogen expires on July 31, 2016 and renews automatically until cancelled by one of the parties. These costs were reimbursed by the Company. As of March 31, 2016, the Company owed Tecogen $611,526, and Tecogen owed the Company $84,389. During the first quarter of 2015, Eurosite Power repaid $1,000,000 of a related party $3,000,000 note payable in accordance with the terms of the note. On July 7, 2015, EuroSite Power, one of the Company's consolidated subsidiaries, entered into a Revolving Line of Credit Agreement, (or the "Agreement"), with Elias Samaras, EuroSite Power's Chief Executive Officer and President and a member of the Company's Board of Directors. Under the terms of the Agreement, Dr. Samaras has agreed to lend EuroSite Power up to an aggregate of $1,000,000, upon written request. Any amounts borrowed by EuroSite Power pursuant to the Agreement will bear interest at 6% per year. Interest is due and payable quarterly in arrears. Repayment of the principal amount borrowed pursuant to the Agreement will be due on June 30, 2017. Prepayment of any amounts due under the Agreement may be made at any time without penalty. As of March 31, 2016, no amounts have been drawn on this line.

Related parties

3 Months Ended

Mar. 31, 2016

EuroSite Power, Tecogen, Ilios Inc., or Ilios are affiliated companies by virtue of common ownership and common leadership.

The Company purchases the majority of its cogeneration units from Tecogen, an affiliate company sharing similar ownership. In addition, Tecogen pays certain operating expenses, including benefits and payroll, on behalf of the Company, and the Company leases office space from Tecogen. The Company's lease with Tecogen expires on July 31, 2016 and renews automatically until cancelled by one of the parties. These costs were reimbursed by the Company. As of March 31, 2016, the Company owed Tecogen $611,526, and Tecogen owed the Company $84,389.

During the first quarter of 2015, Eurosite Power repaid $1,000,000 of a related party $3,000,000 note payable in accordance with the terms of the note.

On July 7, 2015, EuroSite Power, one of the Company's consolidated subsidiaries, entered into a Revolving Line of Credit Agreement, (or the "Agreement"), with Elias Samaras, EuroSite Power's Chief Executive Officer and President and a member of the Company's Board of Directors. Under the terms of the Agreement, Dr. Samaras has agreed to lend EuroSite Power up to an aggregate of $1,000,000, upon written request. Any amounts borrowed by EuroSite Power pursuant to the Agreement will bear interest at 6% per year. Interest is due and payable quarterly in arrears. Repayment of the principal amount borrowed pursuant to the Agreement will be due on June 30, 2017. Prepayment of any amounts due under the Agreement may be made at any time without penalty. As of March 31, 2016, no amounts have been drawn on this line.