Gates and I agree on something for once, but I've been saying this for 10 years... We need an electrical superhighway. Specifically we need a federal electrical grid just like we have federal highways.
I might be a libertarian but I have no problem funding things that are obvious and proper.
We need new infrastructure for everything. Rail, electrical, pipelines, and communication. The best solution is we build deep underground tunnels a la Musk and the his Boring company but I'm not saying to only use them of course. Building underground would better protect the system from both the elements, natural disasters, war, and simple sabotage. A 50 year project to be sure but the tunnels can be multi use. The more tunneling machines you build the faster you can tunnel so it is very scalable.
Highways use to be haphazard like the current electrical system. But the federal highway system a brought much needed central vision. One of the few good things the federal government has actually been able to deliver on.
There is actually excess solar and wind. You can use that excess power to dig the tunnels and lay lines down as you go.
Imagine building a national aqueduct system.