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In storage almost every day new concepts, even proven, and each day cheaper than short time are to be known.

26 Dec 2015 http://green.wiwo.de/neue-waermespeicher-diese-betonkloetze-liefern-nachts-solarstrom/. Mentioned is a new storage system which the Norwegian company EnergyNest developed with Solar Research Centre Abu Dhabi: TES Thermal Energy Storage. Combined with a warmth storage solar thermal energy can deliver current – at any time, as this article says. Here special Thermo-oil is used and flows through meandering pipes in huge chunks of concrete. A small solar thermal plant delivers warmth to the oil, and this warmth can be kept best by the concrete. Better than salt as used in similar cases, which can destroy the pipes at special occasions. If more storage is used only more chunks of concrete might be built.

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