Comment by coryrc

The jet planes are flying much higher and are loaded; I'm assuming this one was empty. That would account for the power discrepancy.

Finally, I think you might be still high on the power cost. $.10/kwh is retail cost in the PNW, they might be, um, bullshitting a little and have purchased power at a very good rate at a particular time just so they could say $5. They didn't say every flight would be $5. So energy could have been 3x more than you estimated.