Law No. 15,269/25, published on November 25, introduces a structural reform and modernizes the regulatory framework of the power sector by amending existing regulations and introducing new rules.
The law aims, among other objectives, to promote energy security and affordable tariffs, expand access to the free power market, and create incentives for electricity storage.
In this ebook, we present the main changes introduced by Law No. 15,269/25, providing stakeholders with greater clarity on the potential impacts resulting from the updated legislation. The publication covers the following topics:
- opening of the electricity market and the role of the supplier of last resort;
- rules applicable to self-production by equivalence;
- energy storage for distributed generation projects;
- the incentivized energy regime (TUSD/TUST discounts);
- compensation for generation curtailment schemes;
- electricity storage systems;
- access rules for transmission and distribution systems;
- energy security and operation of the National Interconnected System (SIN);
- extensions of hydropower concessions;
- renegotiation of hydrological risk;
- price formation mechanisms;
- special environmental licensing for hydropower plants;
- the new organizational structure of ANEEL and the CCEE;
- decommissioning of coal-fired thermal power plants;
- supply to isolated systems;
- sectoral charges;
- tax incentives for hydrogen; and
- natural gas.
