The State Grid corporation of China is constructing a power line of capable of transmitting a staggering 37 billion kWh per year. The record-breaking cable stretches from the power rich north eastern Hami Prefecture to the energy-starved city of Zhengzhou in the west. Costing a twitch-inducing $3.7 billion, when it's completed in 2014, it'll be the most capacious link in the world. Rather than rest on that particular laurel, the company is commencing work on a second, slightly smaller line that'll be used to
