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cowllin | 2 years ago

When's the next one? How big does an eclipse need to be to start wreaking havoc on the grid? Or is that a "never" situation still?

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cwal37|2 years ago

Like someone else said, 2024 has a "total eclipse", but its path is more central, largely avoiding the solar-heavy west. It will still hit Texas (ERCOT), but since the date is early April the grid conditions should be relaxed enough that it will be another event where some planning should mitigate potential issues.

The next eclipse that would hit in the summer (which would have tighter conditions and more reliance on solar to serve demand) won't be until August 2044. Who knows exactly what the grid will look like by then, but you will certainly see a massive dip in solar generation.

madcaptenor|2 years ago

I doubt that a total eclipse would actually have much more effect than an annular eclipse - in an annular eclipse like the one a few days ago the sun is still very nearly covered.

The 2044 total eclipse is the next one in summer in the contiguous US; I wonder if some sooner ones will also be interesting for this question. (I don't know enough about the worldwide geographic distribution of solar power to pick out candidates.)

evan_|2 years ago

There will be an eclipse across the midwestern US up through parts of New England in 2024- you can show its path if you click "2024" in the "Track path of eclipse" widget near the bottom of the page.