v3.7.0.1
Condensed Consolidated Statements of Cash Flows - USD ($)
6 Months Ended
Jun. 30, 2017
Jun. 30, 2016
CASH FLOWS FROM OPERATING ACTIVITIES:    
Consolidated net loss $ (231,757) $ (1,373,669)
Adjustments to reconcile net loss to net cash used in operating activities:    
Depreciation and amortization 242,876 131,941
Provision (recovery) of inventory reserve 25,609 (40,000)
Stock-based compensation 97,684 88,177
Non-cash interest expense 389 23,050
Loss on sale of assets 2,909 640
Provision for losses on accounts receivable 1,335 0
Changes in operating assets and liabilities, net of effects of acquisitions    
Short term investments 0 294,802
Accounts receivable 355,740 (954,191)
Unbilled revenue (952,864) (141,827)
Inventory, net (1,242,782) 782,728
Due from related party (118,612) 785,818
Prepaid expenses and other current assets (99,601) (134,033)
Other non-current assets 65,687 0
Increase (decrease) in:    
Accounts payable 786,419 (693,524)
Accrued expenses and other current liabilities (10,362) (30,078)
Deferred revenue 176,852 (165,186)
Interest payable, related party 8,523 0
Net cash used in operating activities (891,955) (1,425,352)
CASH FLOWS FROM INVESTING ACTIVITIES:    
Purchases of property and equipment (209,265) (100,925)
Purchases of intangible assets (22,539) (50,970)
Cash acquired in acquisition 971,454  
Payment of stock issuance costs (365,566)  
Net cash provided by (used in) investing activities 374,084 (151,895)
CASH FLOWS FROM FINANCING ACTIVITIES:    
Proceeds from demand notes payable, related party 0 150,000
Payment of stock issuance costs 0 (8,544)
Proceeds from the exercise of stock options 114,034 18,925
Net cash provided by financing activities 114,034 160,381
Net decrease in cash and cash equivalents (403,837) (1,416,866)
Cash and cash equivalents, beginning of the period 3,721,765 5,486,526
Cash and cash equivalents, end of the period 3,317,928  
Non-cash investing and financing activities:    
Cash paid for interest 0 72,199
Exchange of stock for non-controlling interest in Ilios 0 330,852
Issuance of stock to acquire American DG Energy 18,745,007 0
Issuance of Tecogen stock options in exchange for American DG Energy options $ 114,896 $ 0

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