Spanish compressed air energy storage power station

Why do we need energy storage systems in Spain?

Energy storage systems in Spain are a key element in the fight against climate change, as they help us to address the challenge of the energy transition. These systems make renewable energy production more flexible; and therefore help us to guarantee its integration into the Spanish electricity system.

What is compressed air energy storage?

Compressed air energy storage is produced in installations with a reversible motor that, during periods of excess energy, stores ambient air at high pressures in underground cubicles. It is a mechanical storage system comparable in capacity to hydroelectric pumping.

How many compressed-air energy storage plants are there?

Currently, there are three compressed-air energy storage plants operating globally, in Germany, the US and China. Other sites are being explored and developed. Compressed-air storage uses low-cost surplus electricity to compress air to a high pressure.

Where can compressed air be stored in Europe?

According to Zaversky, there are several sites in Europe where this concept could operate, especially in southern European countries such as France, Greece, Italy and Spain. “The Greek islands are particularly favourable, because they have high solar energy available and there are locations where compressed air could be stored underground.”

How do supercapacitors store energy?

Like hydroelectric pumping and compressed air systems, this system is designed to store energy on a large scale. Supercapacitors are an alternative energy storage device to batteries. They are capable of storing large amounts of electrical energy in the form of electrostatic charges.

Can compressed air save energy from solar panels?

As the world shifts toward renewable energy, one major challenge remains: efficient energy storage. An EU-funded research team is exploring the use of compressed air to store excess energy collected from solar panels.