One important caveat to this. It costs less than 17 cents to generate 1 kwh. Closer to 3 cents really. But that's the cost of making the electricity, getting that electricity to a house or charger or what have you costs more. Since energy is a for profit industry they tack all the logistics costs to the client buying the electricity.

So your math is spot on but I fear the amount of markup on the electricity will be massive especially since it's for a business let alone an airline.