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re: Will anything change with entergy?
Posted on 8/31/21 at 9:17 pm to Lickitty Split
Posted on 8/31/21 at 9:17 pm to Lickitty Split
quote:
It’s hard for lines to go down when they are in the ground. I know they all can’t be in the ground but they sure could reduce the impact when they have fewer lines above ground to fix.
Underground power isn’t all its cracked up to be. For starters, it’s incredibly expensive - over 10x the cost per foot of above-ground lines, and that’s for new installations. So in the case of moving an area’s lines underground, imagine the cost to replace ALL of the poles and ALL of the wire in that area… and multiply it by 10.
Second, underground lines are more susceptible to flood damage. Particularly from salt water, which is a risk with storm surge. And when they are damaged, they are, again, much more expensive to repair.
Moving high-voltage transmission lines underground is probably a non-starter anyway.
3
Posted on 8/31/21 at 9:24 pm to lostinbr
quote:
Moving high-voltage transmission lines underground is probably a non-starter anyway.
It’s possible just expensive. We have a special projects group that is on a 335 mile 320kV DC project right now. I don’t know the full cost, but when I was helping them facilitate the pull plan one of the PMs mentioned that the normal price is $5M per mile rural and 30$M per mile urban. Thats a mix of HDD and open trench. It can be change if you have to do more of one or the other.
This post was edited on 8/31/21 at 9:26 pm
Posted on 8/31/21 at 9:25 pm to lostinbr
quote:
Underground power isn’t all its cracked up to be. For starters, it’s incredibly expensive - over 10x the cost per foot of above-ground lines, and that’s for new installations. So in the case of moving an area’s lines underground, imagine the cost to replace ALL of the poles and ALL of the wire in that area… and multiply it by 10.
Second, underground lines are more susceptible to flood damage. Particularly from salt water, which is a risk with storm surge. And when they are damaged, they are, again, much more expensive to repair.
Moving high-voltage transmission lines underground is probably a non-starter anyway.
Entergy care rep, is that you?
I've lived with underground lines for years and the only sustained power loss comes from when a tree falls on the above ground lines elsewhere
Posted on 8/31/21 at 9:52 pm to lostinbr
quote:
Underground power isn’t all its cracked up to be. For starters, it’s incredibly expensive - over 10x the cost per foot of above-ground lines, and that’s for new installations. So in the case of moving an area’s lines underground, imagine the cost to replace ALL of the poles and ALL of the wire in that area… and multiply it by 10.
Second, underground lines are more susceptible to flood damage. Particularly from salt water, which is a risk with storm surge. And when they are damaged, they are, again, much more expensive to repair.
Always struck me as a bit of a how do you eat an elephant question. Just bite by bite and need to start somewhere. It’s undeniable the quarter and CBD have the most reliable power and it’s buried. Utility lines in neighborhoods like Lakeview have back alleys where lines could be buried without impacting streets and sewer.
Yes it’s expensive but outages are so frequent in the city. As to the saltwater point I’m sure that’s correct. On the other hand if there is saltwater running through the streets of New Orleans again it’s game over anyway and the system is destroyed.
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