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ESG

Environment

CBA produces the energy needed to manufacture its aluminum at its Hydroelectric Plants. The year 2022 marked the process of bringing these Plants under the direct control of the Company, which were previously managed by Votorantim Energia (now Auren) under a service contract. This process was a result of the reorganization of Votorantim S.A., where the invested companies received greater independence in their operations.

Currently, CBA has:

– 23 Hydroelectric Plants in 6 Brazilian states
– 17 plants under its own operation and 6 through consortia

What the Energy Business Does

  • Generation of energy from existing projects
  • Interface with the consortia
  • Maintenance and improvement of the Plants
  • Socio-environmental management around the Plants
  • Licensing activities for the projects
  • Health and safety of the teams
  • Regulatory and commercial management

Renewable Energy Generation

Impact of Energy on Aluminum Production

The aluminum production process is highly energy-intensive, meaning that electricity is a crucial input. Energy expenses account for 25% of the production costs in the Smelting Plants. This underscores the significance of energy consumption for this industry and highlights the competitive edge that CBA has by being a self-generating company.

By generating the energy required for its production, the Company ensures supply at a competitive cost without needing to resort to the market for procurement. This advantage positions CBA as a standout among other global aluminum producers.

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Energy Efficiency

Aluminum production is highly dependent on electric energy, especially in the electrolysis stage that occurs in the Potrooms. However, CBA has a significant competitive advantage: 21 own hydroelectric plants with the capacity to generate 100% renewable electric energy to supply the activities of the Aluminum Plant. Even so, we understand that there is always room for improvement when it comes to sustainability.

This program operates in the following SDGs

(Sustainable Development Goals)

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Our 2030 Goals

Achieve 100% renewable energy sources for electricity in production processes.

Expand installed capacity of renewable sources, beyond hydroelectric.

Reduce energy intensity (electricity and fuels).

What We Are Doing

Diversification of the Energy Matrix

In 2020, CBA committed to investing in wind energy in partnership with VE (Votorantim Energia) and VC (Votorantim Cimentos).

This commitment was realized with the acquisition of the self-production wind energy assets of Vento de Santo Anselmo Energias Renováveis S.A. and Ventos de Santo Isidoro Energias Renováveis S.A.

The wind farms are part of the Ventos do Piauí I and II complex, located between the states of Pernambuco and Piauí, with an installed capacity of 171.6 MW, equivalent to 74.4 MW of assured average energy. The generated energy will be allocated to the Itapissuma (PE) and Alumínio (SP) plants of CBA, with a planned start in 2023.

What We Are Doing

In 2022, CBA began implementing three energy efficiency projects at the Aluminum Plant, with the potential to reduce the operation's consumption by 5 MW.

  • Compressed Air (Alumina Refinery): Replacement of old compressors with new ones, resulting in an average reduction of 1 MW.
  • Lighting (Alumina Refinery, Foundry, and Extrusion): Replacement of conventional lighting, resulting in a reduction of 0.5 MW in 2022.
  • Electric Motors/Frequency Inverters (Refinery, Furnace Rooms, and Foundry): Replacement of old, low-efficiency motors with high-efficiency ones, with the installation of frequency inverters. The installation process is expected to be completed in 2023.

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