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  • Energy management


    Suzano’s energy mix is mostly supported by renewable sources such as biomass, which is composed of bark, logs, and trimmings from the wood chipping process; and liquid biomass, also called black liquor, responsible for generating the largest percentage of energy. In addition, in some of the units, the use of biological sludge in biomass boilers is already in place.

    In some of the production units, a surplus of electricity is generated, which is supplied to the national grid (SIN – National Interconnected System), further expanding the degree of renewability of the Brazilian electrical mix.

    Suzano has an Energy Working Group (WG) in place that periodically reviews structural projects and short-term actions to be implemented. This is a multidisciplinary group, responsible for analyzing, prioritizing, and supporting the development of energy performance optimization initiatives, including them in a group of corporately managed projects. Other projects conducted by the Energy WG in 2020 include the following initiatives:


    1. Project to increase specific generation of the boilers: the goal was to increase specific steam generation of the industrial units’ boilers, i.e., to increase steam generation using the same amount of black liquor consumed (renewable fuel/process by-product). Increased generation of steam from renewable sources implies increased power generation and reduced consumption of steam from non-renewable sources
    2. Thor Project: initiative developed with the support of the company’s Digital team, whose principle is the use of machine learning to optimize power generation from the set of turbogenerators in the mills, increasing generation of electricity from renewable sources.


    Besides the initiatives mentioned above, another highlight is the focus on reducing thermal and electrical consumption in the production process, as well as reducing water consumption, chemical inputs, and waste generation, integrating the processes of ten of the company’s plants – Três Lagoas (MS); Jacareí (SP), Limeira (SP), Rio Verde (SP) and Suzano (SP); Aracruz (ES); Mucuri (BA); Imperatriz (MA); Belém (PA) and Maracanaú (CE), seeking to share and choose the best practices in the entire value chain.

    In general, Suzano has the following recurring practices in place to manage this topic:


    Allocation of Self Generation

    On a monthly basis, all energy consumed by the units that purchase electricity is, as a priority, covered by the energy generated by the Suzano plants that generate surplus energy and are exporters through the regulatory mechanism of Allocation of Self Generation (AGP – Alocação de Geração Própria), via the internal systems of the Electrical Energy Trading Chamber (CCEE) in Brazil.


    Sale of surplus energy

    After the internal allocation of energy from the exporting plants to the importing plants, all remaining energy is sold to other market agents, in short-, medium- or long-term contracts, at market price, according to the best commercial opportunity. for Suzano. To this end, the credit risk of the buyers is measured by the financial area in order to reduce the risk for the company.


    Suzano also has a long-term goal of increasing its exports of renewable energy by 50% by 2030. The company designed this commitment because the electrical energy generated in the mills is produced from renewable sources, allowing for surpluses that can supply the national energy system. Thus, through investments in efficiency, research, and innovation, the company wants to increase its contribution to providing clean and renewable energy to the entire country.

    Suzano is also subject to local and federal regulations that include:


    • National Energy Plan 2050: Prepared by the Energy Research Company (EPE) based on guidelines from the Ministry of Mines and Energy (MME), the plan is an instrument to support the design of the planner’s long-term strategy in relation to the expansion of the energy sector. To this end, a number of recommendations and guidelines are presented to be followed over the 2050 horizon.
    • Ten-Year Energy Expansion Plan: Prepared by the Energy Research Company (EPE) based on guidelines from the Ministry of Mines and Energy (MME), the Ten-Year Energy Expansion Plan is an informative document for society as a whole, with an indication, and not a determination, of the perspectives for future expansion of the energy sector from the government’s standpoint, within a ten-year horizon.
    • Decree No. 5.163/2004: Regulates trading of electricity, the process for granting concessions and authorizations for generation of electricity, and other legal and regulatory provisions. Every plant that exports and imports energy is a participating agent in the national electrical system, including the plants owned by the Suzano Group, and is subject to the rules and regulations in force, established through this decree. The operation of the energy market is coordinated by the National Agency for Electrical Energy (ANEEL), the regulatory agency for the electricity sector. Created in December 1996, it is an autarchy under a special regime linked to the Ministry of Mines and Energy (MME).