[dirkt]

It's a pilot system, so one goal is to exactly answer these kinds of question: durability, maintenance etc. I've passed the installation on the A5, and the pylons are on the side of the road, and I've seen machinery parked on the side of the road without a lane blocked, so possibly they can even do cable replacement without blocking a lane.

For the same reason I dont' think they care about billing or huge electricity demand yet (the electricity probably will be paid from the pilot project funds).

But here's an idea: If it's a hybrid system anyway, why don't dump a variable amount of excess electricity generated by renewables into it, instead of selling that at a negative price to other countries in times of low demand?