I'm in another European country. Here it's combined into the final kWh price rather than a separate line item. 7c/kWh for transmission fees.

The grid is owned and managed by a government entity, so the price is set by them with parliament oversight. Last year they had to reduce the price (from 10c/kWh), as they found out they'd been overcharging people for a few years and had a few hundred million surplus of revenue.

And yes they are investing quite a lot to modernise the equipment and put high voltage powelines underground (lots of forests here). My country has a population density comparable to Texas.