With wind and solar very low for:
- four-hour periods being "Very common (nighttime/low wind days)"
- One to four days - Occurs a few times per year
- 8days + Rare- every 7 years or so
For the current Australian grid, which uses roughly 20-25 GW on average, that would require roughly 4,200 GWh of storage—about 12 times more than currently planned for several days back up. Thas roughly 1,000 times larger than any single battery project currently being built in Australia.
Batteries last for several years. Ditto for solar panels, Inverters and batteries, Nuclear is 50-100 years
The longest significant "wind drought" recorded recently lasted 8 days (May 20-27, 2024). Snowy Hydro is (350 GWh)
Nuclear is cheaper by far



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(and that I imagine is tied more to age than use).

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