substation

American  

[suhb-stey-shuhn] / ˈsʌbˌsteɪ ʃən /

noun

1. a branch of a main post office.

2. an auxiliary power station where electrical current is converted, as from AC to DC, voltage is stepped up or down, etc.

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substation British  

/ ˈsʌbˌsteɪʃən /

noun

1. a subsidiary station

2. an installation at which electricity is received from one or more power stations for conversion from alternating to direct current, reducing the voltage, or switching before distribution by a low-tension network

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Etymology

Origin of substation

First recorded in 1885–90; sub- + station

Example Sentences

However, electrical substations that provide power to the plant, to help with cooling, have been damaged by the war.

From BBC

Data centers cost more because of the electrical infrastructure needed to support them, such as power substations and generators, that these firms also build out.

From The Wall Street Journal

Thousands of energy workers are racing to restore power across the country through repairing plants and substations bombarded by Russian strikes.

From BBC

West Virginia is now on the frontline of a national shift that most people won’t notice until it shows up in their own bills, water tables or the substation down the road.

From Salon

Many substations are encased in concrete to minimize the impact of strikes.

From The Wall Street Journal