With those 2 things combined into a solution, you're gambling that we will always have average good wind conditions long enough to keep the grid batteries from going empty. Sadly, under your proposed regime, as time approaches infinity the chance that the grid will run out of power approaches 100%.
If you could avoid straw-manning me about nuclear and lithium in the future that would be super cool. I've played enough factorio to know that green power and batteries are part of the best solution, but you need high energy density generation systems for fast advancement too! If we turn our backs on that tech we know works we will lose future opportunities, or at least delay them
If your local energy storage or grid isn't reliable enough, you can always have a backup diesel generator. Or hydrogen powered generator if you insist this is green. Or some solar cells on your roof. And as much fuel as your risk analysis demands. But the reality is, hospitals can rely on local emergency services for support, and it is likely more cost effective run the risk of spoilage in the rare event of a multi-day power outage than invest in local generation for your refrigeration. My guess would be local equipment failure is more of a risk than a multi-day renewable energy outage, even in latitudes where solar is useless.
If you could avoid straw-manning me about nuclear and lithium in the future that would be super cool. I've played enough factorio to know that green power and batteries are part of the best solution, but you need high energy density generation systems for fast advancement too! If we turn our backs on that tech we know works we will lose future opportunities, or at least delay them