Solar heat for cities the sustainable solution for district heating

In Denmark, 113 villages, towns and cities use solar heat, even though northern Europe is not known to be a sunshine spot. The town of Silkeborg, for example, holds the record for the world’s largest solar heat system, a 110 MW (156,694 m²) installation that was commissioned in December 2016 and took just seven months to be built (see photo). I
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