> I'd guess the actual flight time was only 10 of the 27 minutes, 30 kWh used over 10 minutes is 300kW of peak power

I would note this line from the press release:

> its all-electric propulsion system delivered more than one megawatt of power.

I assume this was peak during takeoff.

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.

Ooo, sneaky. Not being familiar with flight verbiage, I didn't catch the "27 minute mission" being different than a 27 minute long flight!

I don't believe the $5 cost either.