If the installation is on your land you get rent money from it.
If the wires just hang over your land you get nothing for it. Ask any farmer.
The cables over the top of your house is more planning restriction and also issues with cable breaks.
You basically have no rights but if someone then affects you life by using that airspace you have remit to go to the courts to prevent them using it.
There must be thousands of court cases per year about tree overhangs and the like and it doesn't always go in the favour of the land owner.