NIMBYs
There's a power line corridor near where I live and it used to be home to two lines, i.e. two sets of ugly steel lattice transmission towers and wires. The expansion of off-shore wind power in the North Sea means that we need new power lines to connect the wind farms to the large consumers in the south of the country, such as the chemical and automotive industries. They decided on an
HVDC line* which, in my town, will run along the existing corridor. So of course, there was strong opposition and we're all supposed to fear the electric gremlins, spirits and vapours that are sure to emanate from this particular work of the devil. The lawsuits have been struck down and construction is advancing well.
While I don't believe that the electromagnetic fields created by this power line are harmful, I do dislike the more than ugly extra tall and wide pylons. But I did consider the addition of a third transmission line a necessary evil, even though I wondered why they need gigantic pylons for just one new line. Turns out they're moving the two existing lines to the new pylons and removing the old ones... so we'll be left with just one set of pylons, albeit very big ones, that now stand in the centre of the corridor and hence further away from the buildings. A solution that's as close to perfect as you can get without forking out for nicer looking pylons or underground cables. But still, there are people who hate it because Change Is Bad™.
*
https://de.wikipedia.org/wiki/Ultranet