What major advancement in prime movers, introduced around 1906, allowed central stations to significantly increase generator size and capacity?

Answer

The steam turbine

The introduction of the steam turbine around 1906 allowed for far greater rotational speeds and larger generator sizes, enabling stations to grow from hundreds of megawatts to multiple gigawatts.

What major advancement in prime movers, introduced around 1906, allowed central stations to significantly increase generator size and capacity?
inventorEngineerelectricitystationgeneration