kV (kilovolt)
A kilovolt is one thousand volts, the unit used to describe power line and substation voltages. Common U.S. transmission voltages are 69, 115, 138, 161, 230, 345, 500 and 765 kV, while distribution usually runs below about 35 kV. Higher voltage lines can generally carry more power over longer distances, so large data centers usually seek access to higher-voltage transmission.
The full guide · Power & interconnectionTransmission Voltage and Data Centers: 69 kV to 765 kVWhich transmission voltages can serve which data centers, why line capacity depends on more than voltage, and how campuses connect to 69 kV–765 kV lines.