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From the moment that it bought the transmission infrastructure in the Canary Islands at the end of 2010, Red Eléctrica embarked on an ambitious plan to update and improve it, known as Project MAR (Improvement of Network Assets).

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The project consists of the field installation of an energy storage system, specifically a lithium-ion prismatic battery with a power in the range of 1 MW and a capacity of at least 3 MWh.