[invalidname]

At scale they do cover countries energy needs. Storage at grid scale is pretty great, are there enough batteries to replace all the current energy requirement?

No. But they can be manufactured much faster than setting up a nuclear plant.

If you have a combination of wind, solar, hydro and geo over enough of a distance then you can get continuous energy with very little reliance on storage. The main problem is that this only works at scale and some countries are smaller. For this we need marketplaces that sell energy between countries automatically. That isn't a hard problem on the technical level, but might be a political issue and a logistic issue (grid connections, security etc.).

Because of the urgency nuclear isn't viable. The same capacity *with storage* can be setup in less time than it takes to build a nuclear plant. It will be cheaper to boot. The economics of nuclear made sense a decade ago, not now.