Black liquor, a primary residue from pulp production, serves as Suzano's main fuel for energy generation, supplementing forest biomass to produce clean and renewable energy.

After black liquor is burned in the recovery boiler, its chemical components are recycled back into the production process. The steam produced from this combustion is then directed to turbogenerators, where thermal energy is converted into electricity.

Most of Suzano's mills are energy self-sufficient, meaning they meet their own internal energy needs and export any excess.

Aligned with Suzano's business strategy, which emphasizes vertical integration, such as the new Tissue units in Aracruz and Mucuri and the internal chemical supply plants in Ribas do Rio Pardo, the energy surplus will now mainly support our own operations and the chemical plants within the mills.

This structural change shifts the focus from monitoring renewable energy availability on an individual basis to integrating it into the company's internal decarbonization plan, aligned with the SBTi-validated goal. This approach emphasizes the role of efficient renewable energy use in lowering both direct and indirect emissions, advancing Suzano's progress toward a low-carbon economy.

Our industrial units in Brazil produce renewable energy from black liquor and forest biomass, which is then exported to the National Interconnected System.

Increase the export of renewable energy to the grid by 50% - from 214 MWm to 322 MWm by 2030.

The technical challenges and production fluctuations experienced in recent years have affected the performance of renewable energy exports. Nevertheless, in 2025, Suzano exported 255 MWm, a 32% increase from the previous year and a 19% rise compared to the baseline.

A key positive development during this period was the complete startup of the Ribas do Rio Pardo unit, which helped meet the target in the remaining four months not covered in the first year of operation in 2024.

The Três Lagoas and Ribas do Rio Pardo units were Suzano's biggest energy exporters. However, both experienced overall shutdowns in the first half of 2025, which affected their export volumes. The Mucuri unit performed strongly, exporting 21 MWm, aligning with the expected nominal level for its operation. The other facilities achieved results like those of previous years.
 

To meet the SBTi-validated decarbonization goal—a 50.4% reduction in fossil emissions (scopes 1 and 2) by 2032 from 2022 levels—it is crucial to advance the energy matrix transition by increasing renewable generation in thermal and electrical power.

Starting in 2026, the objective of supplying renewable energy to the grid will be integrated into the internal decarbonization plan, enhancing its role in lowering emissions and reaffirming alignment with the SBTi-validated commitment. Given this integration and that the energy surplus will primarily be used for our operations and internal third-party plants, this commitment will no longer be monitored from 2026 onward.