letslook4treasure:

The 10-metre wide, helium-filled inflatable turbine, called the Airborne Wind Turbine (AWT), is able to produce more than twice the power that a conventional tower turbine can generate at the same height. Prototype by Altaeros Energies, a wind energy company formed out of MIT

This is a huge breakthrough for 2 reasons:

1. The higher the altitude, the stronger the winds! As you get farther from the land the wind finds less resistance and goes at higher speeds which only means more power. 
2. This allows unprecedented mobility and flexibility to wind farms. You could practically chase the wind. Moreover, it would let you prevent major damage to your wind farm in case of hurricanes or severe storms. You would just have to ground your turbine-blimps and the next day you would be operating like nothing happened.