Fusion isn't in our lifetimes. Its been 10 years away since the 50s - only to get more R&D grant funding for budget building.

If it happened it would be a huge game changer for our economies but it is far away from deployment let along lab proven. It still requires more energy to start/maintain the reaction then it can produce - which is fundamental to success.

While that is true that there is a lag time to deploy nuclear - that is a vestige of the last 40 years of regulating it out of existence. That has changed - technology has improved and regulatory is under scrutiny. The difference is that once nuclear starts to roll out, as it will in the next 3-5 years, we will be seeing large deployments of clean dedicated load ripple through our electrical system in a product assembly line.

Solar and storage are great assets - and will continue to grow but they have other sets of constraints and deploy at small scale (relatively). The large scale deployments have long time horizons.