Brazilian state-run oil and gas company Petrobras (<a href="https://www.b3.com.br/pt_br/market-data-e-indices/servicos-de-dados/market-data/cotacoes/?symbol=PETR4" target="_blank">BVMF:PETR4</a>) has bought International Renewable Energy Certificates (I-RECs) attesting that 100% of its industrial and administrative operations in Brazil in 2023 were supplied with renewable sources.