it is a monster of a machine, this thing. and i want you to describe for me its scale and efficiency, and how you get it to work. so, the haliade—x is the world's most powerful wind turbine in operation today. it's offshore, it has a 14—megawatt capacity, and the rotor — so, the distance from blade tip to blade tip — is 220 metres. so each blade is longer than the wingspan of the largest aircraft in the world. each spin of one of those blades can power a typical household for more than two days. so, a typical wind farm can power about a million households. and so this is incredibly important in terms of being able to move to more wind power, more efficient offshore wind, and with every one of these turbines that goes out, you're saving about 52,000 metric tons of c02, which is like taking 11,000 vehicles off the road. wow, that is pretty, pretty impressive.