Quarterly report pursuant to Section 13 or 15(d)

Cover
- Document and Entity Information Document and Entity Information
Financial Statements
Notes to Financial Statements
Accounting Policies
- Description of business and summary of significant accounting policies (Policies)
Notes Tables
Notes Details

Description of business and summary of significant accounting policies - Revenue by Product Line and Services (Details)

v3.7.0.1

Description of business and summary of significant accounting policies - Revenue by Product Line and Services (Details) - USD ($)	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Revenue by Producks and Services [Line Items]
Products	$ 2,807,347	$ 2,266,148
Services	4,039,420	2,809,367
Total revenues	6,846,767	5,075,515
Cogeneration
Revenue by Producks and Services [Line Items]
Products	2,296,637	1,417,972
Chiller & Heat Pump
Revenue by Producks and Services [Line Items]
Products	510,710	848,176
Service Contracts
Revenue by Producks and Services [Line Items]
Services	2,361,582	2,188,322
Installations
Revenue by Producks and Services [Line Items]
Services	$ 1,677,838	$ 621,045

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Aggregate revenue during the period from the sale of goods in the normal course of business, after deducting returns, allowances and discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1(a))
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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- Definition

Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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Aggregate revenue during the period from services rendered in the normal course of business, after deducting allowances and discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1(d))
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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