agl unveils australia's biggest solar energy p, page-14

hanrahan,
Electrons are not my thing being in the black art of blowing up and crushing minerals, but please check out the attached links.

They are doing some very long transmission lines in China.

Siemans and ABB and Alstom are into it in a big way mate.

http://www.energy.siemens.com/hq/en/power-transmission/hvdc/hvdc-ultra/

http://www.abb.com/industries/us/9AAC30300393.aspx

http://www.alstom.com/grid/products-and-services/engineered-energy-solutions/hvdc-transmission-systems/HVDC-Ultra-High-Voltage/