The biggest power stations in United State Grand Coulee

When we talk about the largest electric power station in the United States, we will not lose sight of Grand Coulee, the largest station in the United States, and we will go into some of its details.

And in the past I have written about The biggest power stations in United States

it's capacity is 6,809 MW, Which represents a big number as a power station, It provides Hydroelectricity which is  electricity produced from hydro-power  located on the Columbia River in Washington, and it owned by U.S. Bureau of Reclamation, It has been in service since 1941 and it's anual generation in 2018 is 21,043 GWh and it's capacity factor is 35.28%

In conclusion, I have a question if you can answer it, please leave me a comment to explain to me the answer and the question is

When I conducted the process of searching for stations located in the United States and trying to find out which is the largest capacity, there was a question in my mind which is why this station is the largest capacity station while in the United States there are nuclear stations and other types of different and advanced why is this the largest capacity remains

Although we know that nuclear energy has fantastic capabilities in generating energy from successive divisions