18 Feb 17
https://phys.org/news/2017-02-wireless-power-transmission-safely-devices.html
Frequency about 2 megahertz with ability to transmit over one kilowatt of energy anywhere inside a room, walls conductive, copper pole in center of room.
They claim to meet federal safety standards but not sure if I would like to be watching TV or reading in a room with a couple kilowatts floating around inside 24/7.
Doesn't sound to me like a technology that would gain acceptance, even though it is proven.