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Comment by blantonl | Hacker News Reader

There's nothing wrong with it. But it would take lifetimes of money and time to retrofit a city like Houston to move all power infrastructure underground. And there is no way consumers would ever sign up for the cost to do so. It would be akin to building the Hoover Dam today. It would probably be one of the largest public works projects ever attempted.

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Lifetimes of money, really? What is that measurement? Someone above said 2.5 million per square miles. Catastrophic damage from larger storms is often in the tens to hundreds of billions of dollars, so it feel like it would be in the best interest of most parties to embark on this project, even if it happens slowly.

Putting power lines underground wouldn't mitigate very much of that damage though, would it? I was under the impression that the vast majority of those multibillion dollar figures is water damage to buildings, cars, and other equipment.

Just one anecdote. We lived through the deracho in Iowa, one of the places hardest hit. Huge swaths of the city was without power for weeks. In our house, in the middle of the most damage, was without power for under 24 hours. That's a massive difference. I don't know how much the calculations take into account physical damage versus all up damage including lost productivity. But many of the folks working at the local company were back "in the office" working from home because the business was without power far longer than most of the employees. I have no idea how the overall damages are calculated.

A lifetime of money is ~$10M or so. That's $100k/year for 100 years.

The poster above misstated the cost. Its $2.5mil/mile. That number actually comes from PG&E in California, so its possibly not relevant to Houston. I couldn’t find that Centerpoint has actually done an analysis for Houston. Just to get an idea of scale, Centerpoint states on their website that they operate ~33,000 miles of above ground power lines.

Source: https://www.khou.com/article/news/news-explainers/the-why/ho...

It’s not lifetimes of money, but there are substantial costs.

All of the existing distribution conductors need to be buried either by trenching or directional boring, all of the pole-mounted transformers need to be replaced with pad-mounted transformers , and all of the customer service drops need to be converted from overhead to underground.

In another post, someone said about $2.5M per square mile, which isn’t actually all that much money. If you figure half labor and half material costs (fairly standard for electrical construction) and labor costs of $100/hr (IBEW 66 journeyman lineman), that’s 12,500 hours of labor, or a 6.25 person crew for one year to convert one square mile, and Houston is 637 square miles.

~4,000 person years of labor, 400 full time linemen could do the whole city in 10 years.

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