AgLA06 said:
Fitch said:
Underground is just a far better way to go. CNP doesn't do it cause it costs a couple hundred bucks to slam a pole up and hang some can transformers.
Old and tired conversation at this point but it's not impractical to bury electrical distribution lines if the road is already being tore up and other utilities replaced.
Burying high power transmission lines is impractical but there's orders of magnitude less of those.
Saying this as one who is in land development and construction and deals with Centerpoint multiple times weekly…
Interesting because the contractors say the opposite. Just as likely to get cut by some jerk digging or have a fault because of the high moisture in our clay. Not to mention we're a city of fault lines. A residential line can be repaired in 20 minutes without damage to property. Underground can take weeks and F up your yard, road, or world. And that's before rates would go up multiples.
https://www.power-grid.com/td/underground-vs-overhead-power-line-installation-cost-comparison/#gref
May 2011 paper "Underground Electric Transmission Lines" published by the Public Service Commission of Wisconsin, "The estimated cost for constructing underground transmission lines ranges from 4 to 14 times more expensive than overhead lines of the same voltage and same distance. A typical new 69 kV overhead single-circuit transmission line costs approximately $285,000 per mile as opposed to $1.5 million per mile for a new 69 kV underground line (without the terminals). A new 138 kV overhead line costs approximately $390,000 per mile as opposed to $2 million per mile for underground (without the terminals)."
And then it's more difficult and costly to maintain underground utilities.
We should totally do that.
Well I for one have never heard of an underground electrical line having been cut.
We just installed a mile of underground duct bank and CNP is pulling conductor this month. It's between 15-30' underground and weaves around other lines that have to be sloped for gravity (sanitary, storm). So it's deep.
And encased in red dyed concrete.
And the lines are toned and in a surveyed and legally described alignment.
You're not going to stick a shovel down to plant a tree and take out power to the block.
Repair is a random, black swan event. Like an underground switch or transformer blowing. But most of those in houston are above ground anyways. Other than that, the line could short and burn out but that would happen pretty quickly after the power was turned on - not 5 years later.
Overall significantly less maintenance.