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Helsinki Converts Oil Caverns into Underground Heat Battery

Helsinki is transforming abandoned oil caverns into a massive underground heat battery, an innovative solution for sustainable energy storage.

22 Aug, 09:02 — 22 Aug, 09:02
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Times of IndiaMostly Factual5d ago

Helsinki turns abandoned oil caverns into giant underground heat battery

<img border="0" hspace="10" align="left" style="margin-top:3px;margin-right:5px;" src="https://timesofindia.indiatimes.com/photo/133420847.cms" />

By TOI World Desk

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