I'm suspicious of some of your numbers. For example, what does this line mean: "The rotor’s mass of such a turbine is ~20 metric tonnes. (About 75 million metr

I'm suspicious of some of your numbers. For example, what does this line mean: "The rotor’s mass of such a turbine is ~20 metric tonnes. (About 75 million metric tonnes of oil)" Where does the oil come in, and why is the ratio 3.25 million to one?