Description of business and summary of significant accounting policies (Tables)

9 Months Ended

Sep. 30, 2014

The following table summarizes net revenue by product line and services for the three and nine months ended September 30, 2014 and 2013:



	Three months ended September 30,				Nine months ended September 30,
	2014		2013		2014		2013
Products
Cogeneration	$	626,223	$	457,486	$	3,200,073	$	2,441,740
Chiller	468,306		350,368		1,847,158		1,198,234
Total Product Revenue	1,094,529		779,455		5,047,231		3,639,974
Services
Service contracts	1,808,154		1,734,588		5,503,010		5,331,210
Installations	1,273,180		379,197		2,381,236		771,834
Total Service Revenue	3,081,334		2,113,785		7,884,246		6,103,044
Total Revenue	$	4,175,863	$	2,893,240	$	12,931,477	$	9,743,018