Participation will be voluntary and aims to revoke generation concessions and amicably terminate contracts in order to free up transmission capacity currently occupied by projects without concrete implementation viability.
The board of directors of Agência Nacional de Energia Elétrica (ANEEL), Brazil’s electricity regulator, has opened Public Consultation No. 007/2026, proposing an exceptional regulatory mechanism for Transmission System Use Contracts (CUST) signed by power generation plants.
Participation will be voluntary and will aim to revoke generation concessions and amicably terminate CUST agreements, reducing regulatory burden and freeing access to the transmission system currently occupied by projects lacking real implementation prospects.
The regulation provides for the revocation of generation concessions with reimbursement of the corresponding performance guarantees, where applicable; exemption from any fines arising from ongoing inspection processes; and authorisation for the Operador Nacional do Sistema Elétrico (ONS) to terminate CUST agreements signed with generators without applying termination charges.
ANEEL’s technical area has identified a significant oversupply of licensed generation projects, which is generating relevant impacts on third parties, particularly regarding access to the transmission system.
Suggestions may be submitted to ANEEL via email at [email protected] from 16 to 30 April. Additional information is available on the Public Consultations section of ANEEL’s website.
New edition of the Electricity Transmission Grant Plan 2025
At the same time as the public consultation is underway, the Ministério de Minas e Energia (MME) has published the fourth edition of the Electricity Transmission Grant Plan (POTEE), which serves as the main guide for expanding the Sistema Interligado Nacional (SIN), consolidating both projects to be tendered and those to be authorised.
The state of Goiás is one of the key players in this edition, with initiatives focused particularly on the northeast of the state and on increasing transformation capacity. Among the highlighted projects is the new Iaciara 2 substation (230/138 kV), which will operate alongside the new Rio das Éguas – Iaciara 2 transmission line (230 kV).
In addition to new facilities, the plan includes a schedule for replacing transformers at substations in Itapaci (230/69 kV), Águas Lindas (230/69 kV), Xavantes (230/138 kV) and Goiânia Leste (230/13.8 kV). The strengthening of the state’s infrastructure is complemented by further upgrades at the Serra da Mesa substation (230/138 kV).
In the southern region, the states of Rio Grande do Sul and Paraná stand out, as they are receiving new transmission lines and substations to meet growing demand from local distribution companies.
For Rio Grande do Sul, the plan includes strategic works for the regions of Panambi and Cruz Alta, based on studies by the Empresa de Pesquisa Energética (EPE).
To mitigate overloads and ensure medium- and long-term system reliability, the Passo Real substation (230/138 kV) and the Cruz Alta 1 – Panambi C1 transmission line (69 kV) will be implemented. The plan also includes reinforcements to other transmission installations (DIT) at the Panambi 1 and Cruz Alta 1 substations.
In the state of Paraná, the focus is on expanding the Iguaçu substation (230/138 kV). This project stems from the Reliability Study for the Foz do Iguaçu region and aims to adapt transformation capacity to projected load growth in the coming years.
Licensing agreements in the southeast region will enable the connection of data centres to the Sistema Interligado Nacional (SIN). This measure aims to ensure the necessary energy infrastructure to support the growth of the data processing sector in the region.
