Finland is building the world's largest heat pump – will provide enough heat for 30,000 homes, saving roughly 26,000 tonnes of CO2 emissions each year
21
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Industrial-scale thermal storage unit in Pornainen, southern Finland, will be the world's biggest sand battery when it comes online within a couple of years
23 votes -
A new way of storing renewable energy is providing clean heat – the Vatajankoski power plant is home to the world's first commercial-scale sand battery
5 votes -
Climate change: 'Sand battery' could solve green energy's big problem
11 votes