In the late 80s, severe ice storm in Springfield Mo. caused major power outages. Was contacted several months later for permission to put some of the lines underground.
Mine went underground about ten years ago; 287 feet worth.
Bigger wires went in; too.
Now the lights don’t dim when AC and furnace fans start up.
I ran the old service wires in conduit to the barn, also underground.
(I still have a big generator ready for the occasional outage that appears; sometimes during nice weather!)