Nice overview of solar power! With storage, there are also other forms other than electrical batteries... for instance, gravity storage (pumping water uphill behind a reservoir with excess solar...) or something that I read about recently, something like shredding iron, which gives a transportable and combustible fuel (although, that has other problems...).
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Earth's progress with power production reveals that, separately, renewable energy production is sometimes excessive and expensive. What you read is certainly conceivable.
For instance, some forms of hydroelectric power utilize the pumped-storage (aka gravity storage) where water is pumped to a separate reservoir as a backup means of hydropower during excess demand periods.
Combining this form of hydroelectric power with, for instance, solar power and you almost have a match made in heaven. Solar power plants with excess solar power can utilize the extra energy to pump water to a pump-storage hydro facility reservoir.
The problem, unfortunately, is that we can't get to a point like that without first testing out the technology individually. Too many moving parts in a new system may exceed our ability to manage it.
Thank you again @bengy