Quarterly report pursuant to sections 13 or 15(d)

Deferred Revenue (Details Textual)

v2.4.0.8
Deferred Revenue (Details Textual) (USD $)
3 Months Ended 0 Months Ended 3 Months Ended 3 Months Ended 3 Months Ended
Mar. 31, 2014
ChargingStation
Mar. 31, 2013
Dec. 31, 2013
Mar. 29, 2013
Nissan [Member]
Mar. 31, 2014
Nissan [Member]
Chargers
Dec. 31, 2013
Nissan [Member]
Mar. 31, 2014
NYSERDA [Member]
Chargers
Dec. 31, 2013
NYSERDA [Member]
Mar. 31, 2014
NYSERDA One [Member]
Chargers
Mar. 31, 2014
NV Energy Commission [Member]
Deferred Revenue Arrangement [Line Items]                    
Deferred Revenue $ 1,315,601   $ 890,486   $ 826,538 $ 781,521 $ 414,080 $ 72,288 $ 129,136 $ 43,876
Grant and rebate revenue 62,633 4,999                
Deferred revenue recognized amount       782,880 4,984   35,274   12,080 1,124
Contract receivable 399,110                 45,000
Number of charging stations 28       48   28   30  
Proceeds from deferred revenue grants         $ 50,000