Energous Corporation Annual report pursuant to Section 13 and 15(d)

Subsequent Events (Details Textual) (USD $)	12 Months Ended		1 Months Ended
Subsequent Events (Details Textual) (USD $)	Dec. 31, 2014	Dec. 31, 2013	Feb. 26, 2015	Jan. 28, 2015	Jan. 22, 2015
Subsequent Event [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross	1,542,477
Lease Expiration Date		Jun. 04, 2014
Subsequent Event [Member]
Subsequent Event [Line Items]
Proceeds from Customers				$ 500,000
Lease Expiration Date			Jun. 30, 2019
Operating Leases, Rent Expense			$ 6,109
Subsequent Event [Member] \| Employee Stock Option [Member]
Subsequent Event [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross					54,500
Subsequent Event [Member] \| Restricted Stock Units (RSUs) [Member] \| Employee Stock Option [Member]
Subsequent Event [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross			6,800
Subsequent Event [Member] \| Insight Capital Consultants Corporation [Member]
Subsequent Event [Line Items]
Stock Issued During Period, Shares, Other			15,000
Subsequent Event [Member] \| Chief Executive Officer [Member] \| Restricted Stock Units (RSUs) [Member] \| Equity Incentive Plan 2013 [Member]
Subsequent Event [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period			246,226