> Bury the power lines at least. Before I visited the US I thought this was how it was done everywhere. And build an interconnected power net.
> NYC electrical is all underground but it all got flooded. Salty sea water does not get along well with electrical equipment.
In 1888, the sky above the streets of NYC were full of telephone lines. There was an ice-storm, it all fell into the streets, making travel impossible. People died. Since then most electric in the denser areas of NYC have been underground. And every few decades, they flood, this time worst of all.
And as my brother says: if a 100 year old part just got ruined by its first encounter with salt water, you can't just call Westinghouse service for another one.
Bury? It varies. Here if I stick a spade in the ground I hit bedrock. And much of my land is wet (because the water has nowhere to go).
That means no underground services: power, phone, water, sewer, gas.
OTOH, back in my last house there was maybe 20 feet of nice dirt. The first electric was cheesy overhead, still in service along the street, but most homes went underground to the house. (Didn't help: that town was 99% dark for a week and may not be mostly-up for another week.)
Further south, there's hundred of feet of sand going down, but in many areas the water table is 3 or 4 feet down. (If you drain an in-ground swimming pool, it may float and pop-up out of the ground.) You can bury water sewer and gas, but electric needs such special care that it isn't done.
> how it was done everywhere.
Europe, right? Many more people per square mile than the US average (though perhaps comparable to the parts of NJ NY etc which Sandy hit). When you have 250 customers per mile of road, you can justify fairly robust service. When you have less than 25 per mile, it is hard to justify service at all (my road is 24/mile :{ ).
OTOH, Gov. Cuomo in NY is pounding his shoe on the desk, threatening to revoke electric monopolies, or at least investigate/harass them. In fact they are doing "OK" for a storm with FOUR TIMES the impact of any NYC-area storm in the last 70 years, and rate-pressure which discourages robust rennovations.