Paul Reynolds, who worked at uBeam, demolishes Energous planned business model through physics [1] [2]. My opinion (and a lot of other investors) is that Energous is a scam [3] [4]. Their device cannot get FCC approval to transmit at the levels that they need to to send power, so it's a complete non-starter.

[1]: http://liesandstartuppr.blogspot.co.nz/2016/04/those-other-g...

[2]: http://liesandstartuppr.blogspot.co.nz/2016/04/those-other-g...

[3]: http://seekingalpha.com/article/3964405-wattup-mini-will-sav...

[4]: http://seekingalpha.com/article/3960298-stunning-admission-e...