I think in this case they are actually using eminent domain for it.

Basically they are reaching out to families, asking for permission, and then when denied that permission going through the state/town and getting permission that way.

The easement taking up half their land was the "compromise" that the utility company gave them, because they already had a notice/permission from the town/state on the entire property. They were going to have the line no matter what, it was whether the current owners wanting to have part of the property, or none of the property. its pretty sickening.