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For technical reasons, the amount of electricity fed to the electrical grid must always remain at the same level of the demand requested by theconsumers to prevent blackouts and damage to the network. This leads to situations where production is greater than consumption and vice versa. This is where storage system technologies and interconnection to the network play a key role in balancing these disadvantages. Untilrecently, the utility of energy storage systems was focused on improving the efficiency of conventional generation systems, such as the use of pumped hydroelectricity to supplement the supply to the network in periods of extra demand or for plant start-ups. This type of storage technology is today the most reliable and in many ways the only one economically available. However, its use it is limited to specific cases that meet strict characteristics. Currently globally, the approach to storage technologies of energy, is to help improve the overall sustainability of large quantities of renewable energies, coming from intermittent sources such like the sun, the sea or the wind |
