Beamed Electricity

Tesla discovered beamed electricity at least 100 years ago. Here is his incomplete wardenclyffe experiment where he was going to give electricity to the entire world: http://en.wikipedia.org/wiki/Wardenclyffe_Tower
However, in 1903, when the tower structure was near completion, it was still not yet functional due to last-minute design changes. Tesla intended for the tower to demonstrate how the ionosphere could be used to provide free electricity to everyone without the need for power lines. Morgan, who could not foresee any financial gain from providing free electricity to everyone, balked. Construction costs eventually exceeded the money provided by Morgan, and additional financiers were reluctant to come forward.[4] By July 1904, Morgan (and the other investors) finally decided they would not provide any additional financing. Morgan also encouraged other investors to avoid the project.
Today the United States Army uses Tesla's design not to help humanity, but rather for warfare in their weapon known as HAARP. Here is the government site:
http://www.haarp.alaska.edu/
and here's the truth about HAARP:
http://www.haarp.net/

Today beamed electricity is a reality, but one that comes with a price tag. http://www.msnbc.msn.com/id/19098305/from/ET/
Radio waves, and microwaves, could be used to transfer energy, and then get picked up with antennas. But these types of energy transfer are not very safe or efficient because the waves spread in all directions and so most of the energy is lost to the surrounding.
Soljacic and colleagues, however, suggest using a power transmitter to fill the space with a “non-radiative” electromagnetic field.
A “non-radiative” electromagnetic field is a state of electric and magnetic fields which are localized someplace on the device and in the source, said John Joannopoulos, a researcher from MIT. “Localized means that electromagnetic fields will die off as you go away from the device or the source.”

So it is possible to not even need cords from a main generator.