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If it would be up to free market, you would be paying for supplying electricity from your solar panels to the grid during day (because there is nowhere to store it) and paying for feeding electricity of the grid during the night (because somebody must make it)

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That's odd, because traditionally, daytime generation is the hardest for utilities to keep up with, especially with factories (induction motors), offices, and residential HVACs - all of which are used less outside the day shift (before sunset).

So much so that many time of use programs are most expensive from 10am-7pm (DST)

Nobody would pay to supply to the grid. If it came to that, panels would have an automatic shutoff, or some device that burns off excess electricity by doing pointless work.

It is called negative prices and it is actual problem

https://www.euractiv.com/section/energy/news/eu-must-address...

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