82 PRT GROUP /SUSTAINABILITY REPORT 2021 During the years 2019-2021, the amount of raw materials employed by the Beinasco plant and the Padua plant grew by 25% and 6%, respectively, due to the resume of activities following lockdown. In 2021, 97% of total materials employed are classified as recyclable, mainly thanks to the wide use of paper, envelopes and cardboard needed, due to the nature of the business itself. 6.2.2 Energy DIRECT ENERGY CONSUMPTION 2019 2020 2021 GJ GJ GJ Diesel oil 829.3 621.3 852.4 Gasoline 247.6 215.1 305.0 Natural gas 2,187.0 2,486.6 2,529.0 Total direct energy consumption 3,263.9 3,322.9 3,686.4 INDIRECT ENERGY CONSUMPTION 2019 2020 2021 GJ GJ GJ Electricity consumption (cooling, lighting, machines) 7,371.7 7,075.0 7,505.1 Of which from certified renewable sources 577.2 629.7 1,040.2 Total indirect energy consumption 7,371.7 7,075.0 7,505.1 Total energy consumption 10,653.6 10,397.9 11,191.5 Scope: PRT Group S.p.A.’s activities 3% 97% Recyclable materials Non-recyclable materials Materials by type in 2021 (t) Total used materials (t) 3,090.0 2,806.0 3,484.9 2019 2020 2021
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