An agreement mediated by Brazil’s Federal Court of Accounts (TCU) seeks to liberalize Eneva’s thermoelectric plant contracts, promising savings of up to R$1.7 billion for Brazilian consumers by 2030 through optimized system usage.
A strategic negotiation led by SecexConsenso, an arm of Brazil’s Federal Court of Accounts (TCU), is set to define a new operational model for major thermoelectric plants in the country. The project aims to liberalize contracts for four Eneva plants—Parnaíba II and VI, and Azulão II and IV—totaling 1.2 GW of installed capacity, transforming how this energy reaches the National Interconnected System (SIN).
The core of the proposal is the elimination of the so-called mandatory generation requirement, which currently obliges the plants to generate energy constantly, regardless of actual demand. With this change, the dispatch of these thermoelectric plants would be governed by economic merit or strict security needs, allowing for more efficient management of the national electricity matrix.
Benefits for Consumers and the System
The Chamber of Commercialization of Electric Energy (CCEE) projects that this alteration will bring significant financial relief. By avoiding compulsory thermal generation during periods of excess supply from renewable sources, the system gains space to better utilize solar and wind energy, reducing what is known as curtailment.
According to the Ministry of Mines and Energy (MME), which has already indicated the agreement’s benefits, the positive impact for consumers in the Regulated Contracting Environment (ACR) is estimated at R$1.7 billion by 2030. The proposal balances the need for power with operational efficiency, keeping the plants’ fixed revenue unchanged.
The change allows for a reduction in mandatory thermal generation precisely during periods of energy surplus in the system, creating space for the utilization of wind and solar generation that would otherwise be curtailed due to energy reasons.
Next Steps and Regulatory Challenges
The implementation of this technical flexibility requires an adjustment to the Unit Variable Cost (CVU), which will increase to R$760/MWh for operational dispatch purposes, ensuring that plants are only activated when the system genuinely requires them. To mitigate risks for energy buyers, an option contract will be integrated into the agreement, ensuring that commercial obligations are met even with the new dispatch dynamic.
The advancement of this agenda now lies with the National Electric Energy Agency (Aneel). The agency’s board is expected to deliberate on the matter in an administrative meeting this Monday. The timeline is tight, with the final deadline for concluding the consensual resolution process set for Tuesday, September 22.
If approved, the agreement will represent a significant step forward in modernizing energy contracts in Brazil, demonstrating that it is possible to reconcile private investments in gas infrastructure with a more dynamic, cost-effective, and sustainable operation of the electricity sector. The expectation is that this flexibility will serve as a model for future contractual adjustments, prioritizing energy security without burdening consumers.
