Came across this doing some research. Five years later solar panels are 400 W per panel--double the assumption here--and their failure rate is 0.1% per year-- 1/10th of the assumption here. Effective recycling has been developed and is becoming more common. And battery pack prices have plummeted. Meanwhile advanced nuclear reactors are still not a thing. The most recent nuclear plant to go online (today, as a matter of fact), Vogtle 3, cost over $30 billion and took 14 years to build.

I'm pro-nuclear if we can do it right, but solar is a much more cost-effective energy source right now.