Spanish developer Acciona Energia has received the first ever prototype certificate for a grid-scale energy storage solution by certification body DNV GL for its wind-plus-battery project in northern Spain.
The experimental wind farm, located in the in Barásoain region of Navarra, comprises five 3MW Nordex-Acciona turbines.
The plant is equipped with a storage system that consists of two batteries located in separate containers: one fast-response battery of 1MW/0.39
