12. COMMON STOCK (Details Narrative) (USD $)	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013
Stock issued for cash, amount	$ 3,028,010	$ 1,935,200
Cash offering costs	102,840	154,816
Stock Issued for Services - Related Party	92,528evsi_StockIssuedForServicesRelatedParty
Stock Issued for Services	168,752	92,220
Total unrecognized restricted stock grant expenses	281,248us-gaap_RestrictedStockExpense
Stock issued for conversion of debt, value	550,000	0
Stock Issued in Settlement of Interest	175,850evsi_StockIssuedInSettlementOfInterest	0evsi_StockIssuedInSettlementOfInterest
Stock Issued in Settlement of Note Payable	24,000	28,500
Gain on settlement of debt	(14,688)	114,167
GreenCore Capital [Member]
Stock Issued for Services - Related Party	92,528
Stock Issued for Services - Related Party (Shares)	616,856
Stock Issued for Services [Member] \| GreenCore Capital [Member]
Stock Issued for Services - Related Party	92,528
Stock Issued for Services - Related Party (Shares)	616,856
Stock Issued for Services [Member] \| Paul Feller [Member]
Stock Issued for Services	66,667
Stock Issued for Services (Shares)	444,448
Stock Issued for Services [Member] \| John Schneider [Member]
Stock Issued for Services	56,251
Stock Issued for Services (Shares)	375,004
Stock Issued for Services [Member] \| Don Moody [Member]
Stock Issued for Services	45,834
Stock Issued for Services (Shares)	305,560
Private Placement [Member]
Stock issued for cash, shares	20,186,725	12,901,333
Stock issued for cash, amount	3,028,010	1,935,200
Cash offering costs	102,840	154,816
Settlement of Convertible Notes Payable and Related Interest
Stock issued for conversion of debt, shares	3,666,666
Stock issued for conversion of debt, value	550,000
Stock Issued in Settlement of Interest	175,850
Stock Issued in Settlement of Interest (Shares)	1,034,410
Loss related to stock issued in settlement of interest	(20,689)
Settlement of Note Payable
Stock Issued in Settlement of Note Payable	24,000	28,500
Stock Issued in Settlement of Note Payable (Shares)	150,000	150,000
Reduction of notes payable	(30,000)	(23,967)
Gain on settlement of debt	6,000	1,500
Reduction of accrued interest		(6,033)
Stock Issued for Services [Member] \| Professional Services
Stock Issued for Services		37,500
Stock Issued for Services (Shares)		250,000
Stock Issued for Services [Member] \| Professional Services 2
Stock Issued for Services		$ 54,750
Stock Issued for Services (Shares)		304,000

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