What is the voltage of the power plant before step up transformer?

The voltage of a power plant before the step-up transformer typically ranges from a few kilovolts (kV) to around 25 kV, depending on the type of generation facility and its design. This voltage level is used for local distribution and to connect to the grid. The step-up transformer increases this voltage to higher levels, often between 110 kV and 765 kV, for efficient transmission over long distances.