For 1500 passengers and 30 MWh (i expect they dont arrive 100% empty) this is 20kWh per person. If they travel 80 kilometers, thats 0.25 KWh/person/kilometer. Sounds OK to me (all values are guessed).
30 passengers, 336 kWh usable at max range, gives 11 kWh per person. Max range 72 km (40 nautical miles), 0.16 kWh/person/km.