Renewables are more than capable of supplying "base load". What you're referring to is a fallacy.
http://www.ceem.unsw.edu.au/sites/default/files/uploads/publ...
A 10GW solar farm is already in the pipeline for northern Australia:
Take a look at France:
https://www.world-nuclear.org/information-library/country-pr...
They generated 71% of their 582 TWh in 2018 from Nuclear, with the bulk of the remainder coming from Hydro (12%) Natural Gas (5%), Wind (5%) ... (solar was only 2%, same as coal).
They are a net exporter of power and that generates about €3 billion/year of revenue.