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pfdietz • yesterday at 6:07 PM • 1 reply • view on HN

I'm not talking about district heating. I'm talking about high temperature storage for conversion back to electricity. Round trip efficiency could be around 40%, better than green hydrogen burned in combined cycle plants.


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bryanlarsen • yesterday at 6:42 PM

Standard Thermal's website's front page only covers heat delivery; did you mean to link to somewhere else?

Those are 2 very different use cases.

Thermal is low rate extraction. It's 1 cycle per year, but the extraction is performed over months so is low rate.

Electricity long term storage is high rate extraction. It's only used a few times a year, but when it is used it needs to cover roughly 100% of the entire grid's needs. I doubt thermal storage is suitable for high rate extraction, but I'd love to be wrong.

Edit: rereading your parent comment you seem to think thermal is suitable for a different use case? Could you elaborate further? When is "prolonged discharge" useful?

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