Spain was an early leader in development of wind power, ranking second after Germany by installed capacity until 2006, when it was surpassed by the United States. In November 2009, a wind storm caused wind farms to produce a peak of 53% of total electricity demand (11.546 GW). This was surpassed in November 2011 with a capacity peak of 59% of power demand being generated by wind power.
A battery energy storage system (BESS), battery storage power station, battery energy grid storage (BEGS) or battery grid storage is a type of technology that uses a group of in the grid to store . Battery storage is the fastest responding on , and it is used to stabilise those grids, as battery storage can transition fr.