In an important step towards attracting new energy storage projects in Brazil, ANEEL (National Electric Energy Agency) published, on the evening of last Friday (10), a set of guidelines aimed at entrepreneurs interested in installing SAE (Electric Energy Storage Systems) co-located with generating plants.
According to the Agency, the new guidelines aim to ensure that storage systems operate safely, efficiently, and in an integrated manner with the national electricity grid, enabling better use of the energy generated by the plants.
SAEs allow energy to be stored and released later, depending on demand or the need for system stability. This measure helps increase grid reliability and optimize the use of renewable energy, as highlighted by ANEEL.
Required documents
Entrepreneurs who wish to request installation that has already been granted must submit to the ANEEL the following documents:
- General arrangement of the project containing the delimitation of the polygon of the energy storage system and the network of restricted interest, starting from the collecting substation of the plant to the connection point, according to the model available on the website. ANEEL;
- Technical study with an estimate of the annual injection of electrical energy associated with the project, including the expected operating profile, overall system efficiency, discharge power, storage capacity, and a description of the technology and equipment adopted.
- Environmental license compatible with the technical characteristics of the project;
- Transmission System Usage Agreement (Cust) signed with the ONS and, if applicable, Distribution System Usage Agreement (Cusd) signed with the distributor, accompanied by the access report or equivalent document;
- Executive Summary for issuing a grant;
- Declaration of Compliance with regulatory requirements.
If it is not possible to present any of the documents, the interested party may submit a justification for evaluation. ANEEL.
Importance of storage
Energy storage systems use batteries capable of storing electricity generated during times of low demand and releasing it during times of peak consumption.
Technology, in general terms, plays a strategic role in stabilizing the power grid, helping the country reduce losses, increase operational efficiency, and enable greater participation of renewable sources, such as solar and wind, which depend on variable weather conditions to generate electricity.
Click here and check out the publication of ANEEL.
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An answer
The most logical option would be to install it alongside the distribution substations. In the event of a blackout, some consumers would be served.