@pettter@harold mine is also ~10km and I am fine with a non-electric bike. Have you considered this option and could you share some pros/cons? In my case I care more of the exercise than of the actual commute, as I can also travel by metro train.
@mapto I only have regular bikes and have commuted several times over the years. luckily I had change and shower facilities. A major pro of an e-bike would be arriving at work and not sweating. Then you could reduce the pedal assist on the return trip and work up a good sweat :) @pettter