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https://www.eenews.net/articles/rooftop-solar-was-overlooked-now-its-closing-a-new-england-power-plant/
New England ISO spent the time to deeply model the actual impacts of rooftop solar, and what actual hour by hour needs for extreme weather events in the winter were, and found that roof top solar and regional wind provided a lot more power to the grid during those times than they had expected.
Classically folks just assume Solar is minimal in the winter. But it turns out that it still generates power. And that power matters a lot in a extreme weather event.
I really wish that NYISO would do a similar modeling exercise. They are making the same claims that the grid can't handle the next few years that New England ISO was making. I have a feeling the results would be very similar, and we'd find that things are going to be fine, and roof top solar is a key reason.