Our electrical grid is in bad shape, but it is not due to lack of power stations. The problem is using alternating current on the transmission lines.
Alternating current was developed for use on distribution grids where is is absolutely superior to direct current. Distribution grids are the part of the grid from the sub-stations to the end users. The are short distance grids.
Transmission lines are used to connect the power stations to the distribution grids and the distribution grids to each other. In the early days, when AC won out over DC, there was usually only one power station that served one or more local distribution grid. AC was still the choice for this as well.
The problem started when the grids became interconnected so they could share electricity between them and a group of distribution grids would have multiple power stations. This should increase the robustness of the system, and to some extent it does. But as the interconnected grids grew from regional transmission grids to a national transmission grid, the problem of phase shift with alternating current became a major problem.
Now it is getting worse with wind farms and solar farms. The power that is shared between the grids or that comes from distributed sources arrives with some phase shift from the primary source, the nearest power plant. Because it arrives with a phase shift, power is lost. A small phase shift does not result in much of a loss, but 10 or 15 degrees starts to result in a significant power loss.
This is where one of the primary threats to our grid from hackers comes from. The phase timing of power from one grid to another, or from different power sources is somewhat controlled through the internet. If a hacker gets one power source to shift its phases so that its power arrives at the sub-station out of phase with another source, that is like a major short circuit. Major sparks will fly and the smoke contained in the transformers and generators will begin to escape. Once they lose their smoke, they don’t work anymore.
Some power sources like wind farms are starting to use DC transmission lines to deliver their power to the major sub-stations. Same for some nuclear power plants that are located far from their customers. It eliminates the phase issue, and also the issues with the moving magnetic fields around the AC transmission lines.
For some reason, it is still a lot harder to run a new DC transmission line than it is for an AC line. The tree huggers do everything they can to stop them because they don’t understand them. After attending some public meetings for a proposed DC line in my area, I found the tree huggers don’t much listen to reason either.
Edit: BTW, it wasn’t that long ago that people bought personal computers when there wasn’t much you could do with them, and then bought cell phones when the towers were few and far between.