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A comment on Giant 'sand battery' holds a week's heat for a whole town. Parent comment
You still need aircon at 7pm after the sun begins to set and while solar is losing power.
Cooler temperatures aren't until 10pm or so, hours after sunset.
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You still need aircon at 7pm after the sun begins to set and while solar is losing power.
Cooler temperatures aren't until 10pm or so, hours after sunset.