contexto

Suzano's energy matrix is predominantly made up of renewable sources, the main one being wood-based biomass. This biomass can be in liquid form, such as black liquor, or made up of waste, such as wood bark, logs, chipping residues, and even the reuse of biological sludge generated in the pulp production process.

Suzano is self-sufficient in electricity and is among the largest self-producers in Brazil, generating from renewable sources. In some of its units, there is a surplus of electricity production, allowing it to be made available to the National Interconnected System (SIN), thus increasing the share of renewable sources in the Brazilian electricity matrix. 

In 2024, the company expanded its industrial operations with the completion of the Cerrado Project, located in Ribas do Rio Pardo (MS). This new unit was initially connected to the SIN as an energy consumer. Once operating at full capacity, it began to contribute renewable energy to the national grid.  

With this unit, Suzano is increasing the energy generated from renewable sources available to the Brazilian grid by an average of 105 MW, enough to supply approximately 1 million inhabitants annually. In line with its commitment to sustainability, the company is working to increase its exports of renewable electricity by 50% by 2030, contributing to the energy transition and expanding the use of clean sources in the country.

The company's strategy is focused on reducing the consumption of non-renewable fuels and seeking energy efficiency in its operations. In 2024, initiatives such as using machine learning to balance electricity generation and fossil fuel consumption stood out. This project showed significant results at the Aracruz (ES) plant during the year, reducing natural gas consumption. Another mechanism implemented was the optimization of the use of methanol in furnaces and boilers, contributing to the efficiency of industrial processes, the reduction of natural gas consumption, and the prevention of waste. 

In line with its commitments to sustainability and the transition to an increasingly renewable energy matrix, Suzano took essential steps in 2024 with the start of operations at the gasification plant in Ribas do Rio Pardo and the use of soybean vegetable oil as a boiler fuel at the Três Lagoas (MS) unit.

The gasification plant represents a milestone in diversifying our renewable energy sources. This innovative technology converts biomass into clean and efficient combustible gas, which can be used directly in industrial processes, strengthening the unit's energy self-sufficiency. 

At the same time, the Três Lagoas plant has successfully started using soy vegetable oil in its boilers. Produced from renewable natural resources, this oil reduces carbon emissions and fine particles, which aligns with our objectives of mitigating environmental impacts and promoting cleaner operations. 

The increase in Suzano's energy consumption is directly related to the expansion of its industrial operations, driven by the start-up of the Cerrado Project, which increased the energy demand needed to support the new production unit. 

The main fuels used in forestry and logistics operations continue to be diesel oil, gasoline, and liquefied petroleum gas (LPG). In 2024, the composition of diesel oil changed to 14% renewable biodiesel and 86% fossil diesel, as determined by the government in Law No. 14.993/24 (Fuel for the Future Law).

The primary energy demands external to the organization are related to the consumption of fuels used in transporting and distributing inputs and products, both domestically and abroad. This also includes the transportation of employees and waste. Energy-related information is obtained from Suzano's Greenhouse Gas Inventory.  

The following information is available in the tables below:

  • Total energy consumed;
  • Consumption of fuels from non-renewable sources;
  • Consumption of fuels from renewable sources;
  • Energy consumed by type;
  • Energy sold by type;
  • Energy consumed outside the organization.

Total energy consumed¹

20202021202220232024

Fuel from non-renewable sources

28.024.857,22

30.956.553,51

29.832.586,94

29.095.141,02

30.054.352,62

Fuel from renewable sources

214.386.646,59

216.528.216,90

217.504.399,00

211.172.499,54

232.494.073,77

Energy consumed

3.498.800,20

3.872.202,27

4.148.649,19

4.208.093,25

5.782.512,14

Energy sold

5.646.273,28

5.711.287,89

5.435.818,50

4.786.387,51

5.476.315,98

Total Amount

240.264.030,73

245.645.684,79

246.049.816,84

239.689.346,30

262.854.622,55

  1. The total energy consumed is calculated by adding the energy from the consumption of fuels from renewable and non-renewable sources to the energy consumed, and subtracting the total energy sold from this figure.

Consumption of fuels from non-renewable sources

20202021202220232024

Liquefied petroleum gas (LPG)

446.402,25

1.092.385,52

537.155,70

501.524,67

500.354,29

Natural gas

20.258.553,43

21.648.153,04

19.512.161,44

19.527.866,04

17.529.062,41

Gasoline¹

59.317,87

40.571,86

94.029,43

92.785,41

110.326,22

Greases and lubricants²

301.343,39

252.466,91

0,00

0,00

0,00

Fossil methanol

0,00

0,00

0,00

0,00

0,00

Heavy fuel oil

2.811.666,29

3.380.402,50

3.401.526,38

3.133.902,09

5.103.793,18

Diesel oil - road³

3.861.967,58

4.514.178,48

6.287.714,00

5.839.062,81

6.810.816,51

Diesel oil - maritime⁴

285.606,42

28.395,20

0,00

0,00

0,00

Total amount

28.024.857,23

30.956.553,51

29.832.586,94

29.095.141,02

30.054.352,62

  1. The automotive gasoline compound combines 73% gasoline and 27% hydrated ethanol.
  2. Because of their representativeness, greases, and lubricants were not counted from 2022 onwards. 
  3. Diesel oil comprises 86% diesel and 14% biodiesel.
  4. Suzano's operations using marine diesel oil were discontinued.

Consumption of fuels from renewable sources

20202021202220232024

Anhydrous ethyl alcohol

21.939,49

15.006,03

12.346,00

17.758,86

28.249,72

Hydrated ethyl alcohol

389.714,38

10.640,54

34.778,00

35.194,46

40.046,47

Biodiesel (B100)

493.634,95

585.642,26

698.634,89

713.578,14

1.059.610,30

Biomass

14.501.384,42

12.244.044,40

13.712.332,41

14.761.335,52

15.612.971,26

Black liquor (lye)

196.843.955,86

201.368.450,59

200.809.882,36

193.738.966,93

213.502.241,91

Methanol renovavel

2.136.017,49

2.304.433,07

2.236.425,44

1.905.665,63

2.250.954,11

Total amount

214.386.646,59

216.528.216,90

217.504.399,21

211.172.499,54

232.494.073,77

Energy consumed by type

20202021202220232024

Electricity

3.498.800,20

3.872.202,27

4.148.649,19

4.208.093,25

5.782.512,14

Heating

0,00

0,00

0,00

0,00

0,00

Refrigeration

0,00

0,00

0,00

0,00

0,00

Steam

0,00

0,00

0,00

0,00

0,00

Total amount

3.498.800,20

3.872.202,27

4.148.649,19

4.208.093,25

5.782.512,14

Energy sold by type

20202021202220232024

Electricity

5.646.273,28

5.711.287,89

5.435.818,51

4.786.387,51

5.476.315,98

Heating

0,00

0,00

0,00

0,00

0,00

Refrigeration

0,00

0,00

0,00

0,00

0,00

Steam

0,00

0,00

0,00

0,00

0,00

Total amount

5.646.273,28

5.711.287,89

5.435.818,51

4.786.387,51

5.476.315,98

Energy consumed outside the organization

20202021202220232024

Total amount

20.508.581,65

24.608.503,50

23.414.086,00

23.597.073,86

32.227.112,14

Informações complementares

The measurements are collected automatically from Suzano's internal systems and, in some cases, are converted into units of measurement. The fuel consumption data was converted into energy consumption based on each fuel's essential density and lower calorific value. To this end, the data contained in the technical specifications sheet of the fuel used was used when available. When unavailable, we used the figures from the National Energy Balance [Ministério de Minas e Energia (MME), 2021].

The indicator “Volume and percentage of certified company and third-party wood” provides information on Suzano's wood certifications.

To learn more about energy management at Suzano, go to “Energy management”.