substation

[ suhb-stey-shuhn ]

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.

substation

/ 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

Word History and Origins

Origin of substation¹

First recorded in 1885–90; sub- + station

Example Sentences

The city would be required to build and staff a fire and police substation and float a $300-million bond to fund the development’s water, power and sewage infrastructure.

From Los Angeles Times

To accommodate increasing power use, the city is now spending heavily on transmission lines, substations and other infrastructure.

From Los Angeles Times

“But the challenge that’s been identified more of lately is that last facility hookup, making sure that the facilities either have the substations, the circuits, the transformers and the time it takes to process that.”

From Los Angeles Times

Renewable power plants need to be built, transmission lines strung, electric substations upgraded or newly constructed, just to accommodate hydrogen production.

From Los Angeles Times

Power was cut in four substations in southeastern Santiago, it said.

From New York Times