[the8472]

The article states it's powered by wind power.

[Pyxl101]

... which was manufactured using energy from a coal-burning electrical plant :-)

All of the green energy types (wind, electric cars) should be examined in the context of their manufacturing costs in addition to their cost to operate. (For example, smelting aluminum requires a great deal of energy.)

[eru]

Not only the green energies: the coal plant also had to be built and the coal dug up.

(For wind turbines, the energy bilance is strongly positive.)