Finnish startup Polar Night Energy and local Finnish utility Vatajankoski have together built the world’s first commercial sand-based, high-temperature heat storage system that can be powered by solar and wind. Sand-filled energy storage in Finland Polar Night Energy’s heat storage system is a 23-foot-tall steel container filled with 100 tons of sand. (Polar Night Energy
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Uniper has been in talks with the German government about a possible bailout. Picture Alliance | Picture Alliance | Getty Images Embattled German gas giant Uniper on Friday submitted a bailout application for government support after running into extreme financial distress, Finnish majority owner Fortum said in a statement. Uniper was the first German energy
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