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72-Year-Old Pensioner Saves Sun Heat with Sand – and Even Cooks Chili Con Carne with It

Summary by focus.de
While Europe is discussing electricity storage and grid overload, retired radioelectrician Robert Hofer has found a simple solution: he heats up sand with solar power – and uses the heat to shower and cook.

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focus.defocus.de
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72-Year-Old Pensioner Saves Sun Heat with Sand – and Even Cooks Chili Con Carne with It

While Europe is discussing electricity storage and grid overload, retired radioelectrician Robert Hofer has found a simple solution: he heats up sand with solar power – and uses the heat to shower and cook.

·Berlin, Germany
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focus.de broke the news in Berlin, Germany on Tuesday, December 2, 2025.
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