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de-energize

American  
[dee-en-er-jahyz] / diˈɛn ərˌdʒaɪz /
especially British, de-energise

verb (used with object)

de-energized, de-energizing
  1. to deprive of electrical energy or exhaust the electrical energy from.

    Turning off the ignition de-energizes the spark plugs.


de-energize British  
/ diːˈɛnəˌdʒaɪz /

verb

  1. (tr) electrical engineering to disconnect (an electrical circuit) from its source

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms


Etymology

Origin of de-energize

First recorded in 1885–90; de- + energize ( def. )


Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

The complaint points to the utility’s failure to de-energize its transmission lines that night, as well as its decision to leave up a decommissioned line that hadn’t carried electricity for decades.

From Los Angeles Times ● Jan. 28, 2026

Powell said the utility company can only be so precise in how it executes power shutoffs because it can only de-energize at the level of circuits.

From Los Angeles Times ● Jan. 9, 2025

Afterwards, the local Salt River Project power utility was called to de-energize the pole.

From Washington Times ● Dec. 7, 2023

The project required Metro to coordinate with Pepco, which will de-energize power transmission lines 15 feet above the station canopies.

From Washington Post ● Jan. 28, 2023

The passive and contemplative following of thought, my own or other people's, must not de-energize my sympathies and my will.

From Julia Ward Howe 1819-1910 by Maud Howe Elliott

Tens of thousands of customers in Los Angeles county alone were without power, as authorities de-energized power lines in a bid to lessen the possibility of electrical sparks that the heavy wind gusts could carry.

From Barron's ● Oct. 17, 2026

“We had never seen an idle, de-energized transmission line cause an ignition,” she said.

From Los Angeles Times ● Aug. 20, 2026

Additionally, the company said its distribution lines to the west of Eaton Canyon "were de-energized well before the reported start time of the fire" as part of its fire safety shutoff program.

From BBC ● Jan. 16, 2025

In the early afternoon — before the initial fire flared back up and began overtaking the town — a utility worker told fire crews that he could not confirm if the lines were de-energized.

From Seattle Times ● Apr. 17, 2024

It was de-energized before anyone noticed what was inside.

From The Variable Man by Philip K. Dick

By de-energizing powerlines, utility providers seek to lesson the chances that a electrical spark could be whipped by winds into to a devastating blaze.

From Los Angeles Times ● Oct. 14, 2026

“We can look after the fact and see that the consequences of potentially not de-energizing the transmission lines are enormous,” he said.

From Los Angeles Times ● Feb. 13, 2025

The CEO of Southern California Edison told The Times earlier this month that winds were not strong enough to merit de-energizing a powerful electrical transmission line.

From Los Angeles Times ● Jan. 26, 2025

Edison’s CEO has said that winds weren’t strong enough to merit de-energizing lines in the area.

From Los Angeles Times ● Jan. 25, 2025

Where the study of metaphysics becomes de-energizing, it becomes demoralizing.

From Julia Ward Howe 1819-1910 by Maud Howe Elliott

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