Advanced Battery Energy Storage Systems (BESS) are being developed in Andalusia with the aim of providing flexibility and stability to the electrical system. These facilities store energy during periods of low demand and release it when the system requires it, directly contributing to the balance between energy supply and demand.

One of the main benefits of these systems is their ability to shift renewable energy generation — which is inherently intermittent — to times of day when it is most needed. In this way, the use of clean energy sources is optimized, dependency on conventional sources is reduced, and overall system efficiency is improved.

In addition, these systems are designed to provide essential ancillary services for the proper functioning of the electrical grid, such as frequency regulation, voltage stabilization, and fast response to grid disturbances. Thanks to their power electronics, they can respond with high precision across all regulation levels — from primary (immediate) control to tertiary regulation — playing a decisive role in the stability and security of power supply.

Scope of action and installed capacities:

The projects are being carried out in three Andalusian provinces: Málaga, Córdoba, and Seville. In total, 9 projects will be developed, which will provide:

• 449 MW of total installed power
• 1,972 MWh of energy storage capacity

This initiative represents a key step toward the energy transition in Andalusia, promoting the effective integration of renewable energy sources and equipping the electrical system with greater resilience, intelligence, and sustainability.