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Engineered wood provides solar power even after the sun goes down
(techxplore.com)
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this post was submitted on 20 Apr 2026
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The problem is that turning heat to electricity using thermoelectric generators is hugely ineffecient. And there wouldn't be enough heat produced to create steam for steam turbines.
You are right, it would be nearly useless to generate electricity, but it could be use to save some. IIRC, heating of water and the home account for roughly 20% of power consumption. Harnessing that heat could help supplement those systems, thus saving a little electricity.