On the contrary. It was private industry that electrified the US. Samuel Insull realized that the way to achieve inexpensive electricity for everyone was to have much larger power plants than people were envisioning at the time. The logical conclusion of this was to create electrical monopolies that were regulated. He electrified Chicago and a large swathe of the country at a breathtaking pace.

So, no, the government did not create the electrical system and then privatize it. It was private from the get-go, and when utilities became monopolies, they were regulated.