Nukes are great, although with the impending "Idiocracy" styled future that seems to be coming I'm less keen on them as I doubt our ability to properly run them over a long timeframe.

What we need, for many reasons, is a national water grid. The grid would provide plenty of pumped hydro to store solar power and return it to the grid at night. It would also resolve flooding issues and provide food security in the face of climate change. I don't think our country thinks that big anymore though.

The benefits would be clear but it would also displace millions of people.

The US could have it's own Three Gorges Dam on the Mississippi River, but it displaced 2 million people.