Sustainability Report ENEVA 2020
9.4.2 Waste
[GRI 306-1 | 306-2 | 306-5 | IF-EU150A.1]
Considering our activities, waste generation is less material, the highlight being ash generation from the coal-fired
power generation process.
The main waste generated in our activities are ash, from the coal-fired power generation activities in Itaqui and
Pecém II, and clay gravel, from drilling natural gas wells, the second being of little relevance. Thus, the main impact
is concentrated in the accumulation of ash in specific yards, which can contribute to the emission of particulate
matter, as well as its final disposal in landfills, which can suffocate the local infrastructure due to the large amount
of matter. Facing this challenge, over the past years we have developed sustainable practices for the reuse of ash,
transforming it into a byproduct and, when this is not possible, following the law and promoting the correct disposal.
As such, the ash is sold to cement companies in Maranhão and Ceará, which collect the input and reuse it to reduce
the amount of clinker in their production line, indirectly reducing emissions. In 2020, 53,497 tons of ash were sent
to co-processing, and, for another consecutive year, we were able to fully dispose of the total amount in cement
plants for co-processing, therefore achieving 100% sustainable disposal. With this action, we comply with the
National Solid Waste Policy and stop disposing of ash in landfills, both in Maranhão and Ceará, in which there has
been no expansion in ash storage yards since 2015.
Pursuing continuous improvement, in 2020 we also published a corporate procedure for Solid Waste Management,
standardizing activities during the entire management process, from generation to final destination. The focus is
to ensure the correct segregation, for temporary storage, transportation, and economical and environmentally
adequate final disposal.
Total waste associated with coal combustion and percentage recycled
[IF-EU-150A,1.]
(ML)
Total CCR waste disposed of (in tons)
Total CCR waste recycled (in tons)
Percentage of CCR waste recycled (%)
*Data revised from that published in the 2019 Report. [GRI 102-48]
2018
2019*
2020
57,448
53,497
57,448
53,497
100
100
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SUSTAINABILITY REPORT ENEVA 2020
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