Five associations in the electricity sector have joined forces to request a review of the law that established that the costs of battery storage systems (BESS), contracted as reserve capacity, should be shared only among generation agents.
For these entities, batteries represent a systemic benefit and, therefore, their costs should also be borne by energy consumers.
The position statement is signed by the associations that represent the energy storage (ABSAE) and solar energy industries (ABSOLAR), wind energy (ABEEÓLICA), self-production of energy (ABIAPE) and independent energy producers (APINE).
Law No. 15.269/2025 introduced paragraph 6 to article 3.A of Law No. 10.848/2004, establishing that the costs of contracting battery storage systems (BESS), through the Capacity Reserve Auction, will be borne exclusively by the generation segment.
According to the organizations, the measure "creates a distinct treatment" for the technology, generating difficulties in its adoption. The associations argue that battery storage does not cater to a specific agent.
“It increases security of supply, stabilizes the network, reduces the risk of power shortages, and contributes to tariff moderation by avoiding more costly solutions for the system. Its benefits are distributed to all users of the electricity grid. When a service is systemic, its cost must also be systemic. More than a sectoral debate, this is a discussion about the efficient allocation of systemic costs and their effects on tariff moderation,” says the joint statement released to the press.
The entities argue that cost allocation targeted at a specific segment tends to have general effects on market functioning, influencing price signals, investment decisions, and competitive dynamics over time. They explain that energy trading contracts provide for the restoration of economic and financial equilibrium in the face of the creation or alteration of sector charges.
"Thus, by concentrating the cost in a single segment, the device does not eliminate the systemic burden, it only alters its path to the final consumer. The result can be a competitive distortion and a mechanism that lacks transparency in financing energy security, without effective gains for tariff moderation," they argue.
According to the Minister of Mines and Energy, Alexandre Silveira, the first auction for contracting energy storage in the form of power should take place in June of this year. The expectation is to contract at least 2 GW of power, according to indications from the minister himself.
The sector, however, is anxiously awaiting the regulation of the technology in Brazil, especially the way in which the charge for using the network will be levied (currently, a double tariff is being discussed, both for charging and for injecting data into the network).
Furthermore, it is unclear how the revenue model that will remunerate BESS will be structured. The expectation is that... ANEEL (National Electric Energy Agency) resume discussion next Tuesday (10).
Currently, the costs of capacity reserve auctions for contracting thermal and hydroelectric power plants in the power modality are borne by consumers through a sector charge – unlike the model foreseen in Law No. 15.269/2025 for BESS.
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An answer
I agree, as long as they eliminate the highly polluting power plants!