D Perry, Pipistrel goes into bat for hydrogen, Flight International, April 2021, p 29

In Slovenia, Pipistrel is approaching the launch of its 19-seat hybrid Miniliner powered by fuel cells boosted by batteries. Although the optimal range will be over 200 nm, a single tank of liquid hydrogen would permit 1000 nm. The installed power would be 2 MW, and operating costs 40% lower than current.