Digging through their website[1] trying to figure them out. Seems to me that the whole business proposition depends on their understanding that Norway, Sweden, (and I guess they expect others to follow) will mandate all short flights being electric in the next decade.
They also say turboprops are higher maintenance and this expense reduces the viability of short flying routes, and I guess their implication is that electric will be cheaper. I am not sold on that one. 95% of the maintenance cost is the routine inspection. You'd have to do a routine inspection on electric propulsion as well. This is all just speculation until you see it in action.