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Hurricane Ian has many thinking about the resilience of the electric grid

Andy Uhler Sep 28, 2022
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One way to strengthen power grids against extreme weather is to put transmission lines underground. But that can be costly and may not help during storms with heavy rain. Patrick T. Fallon/AFP via Getty Images

Hurricane Ian has many thinking about the resilience of the electric grid

Andy Uhler Sep 28, 2022
Heard on:
One way to strengthen power grids against extreme weather is to put transmission lines underground. But that can be costly and may not help during storms with heavy rain. Patrick T. Fallon/AFP via Getty Images
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As Hurricane Ian bears down on Florida, many residents are preparing for power outages. To be clear, there’s no way to completely weatherproof the country’s electricity grid, but there are things utilities can do to make the grid more resilient.

Those things, however, often carry a big price tag, leading to the question: Do the benefits outweigh the cost?

First things first: Weatherproofing the electricity grid from natural disasters is simply not possible.  

“You cannot protect everything from everything all of the time,” said Scott Aaronson at the Edison Electric Institute.

He said utilities shouldn’t necessarily be thinking about how to gold-plate their power network.

“But if you can minimize the impact of that incident, if you can make sure a bad day does not become catastrophic, if you can respond and recover or rebuild or restore after an incident, that’s a form of resilience as well,” he said.

Kaitlyn Bunker at the Rocky Mountain Institute said the common use of that extreme-weather buzzword — “resilience” — is a fairly recent phenomenon.  

“Prior to 2017, the word “resilience” very rarely came up,” she said.

Then, Hurricane Maria hit Puerto Rico and left many without power for months. That’s when utilities and governments started tossing the word around. But she said there’s a problem with translating the idea of resilience into something tangible.  

“There’s not necessarily ways to measure the benefit that that brings,” Bunker said. “So it’s a little harder to quantify.”

We often talk of putting transmission lines underground as a way to make the grid stronger. But that’s really expensive. And if you have a storm like Hurricane Ian, with really high winds and lots of rain, then burying those lines might not help.

Peter Larsen, a scientist at the Berkeley Lab of the Department of Energy, said unfortunately, there’s no one-size-fits-all fix.

“There’s a lot of different environmental factors at play that change this strategy of how you make the grid more resilient,” he said.

And those who eventually foot the bill to create that resilience? You guessed it: the ratepayers.

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