In Brazil there are a small number of datasets that represent the environmental reality of Brazilian commerce and industry. On the other hand, we have seen the growth in demand for LCA studies and the growth in interest for type III environmental statements. This initiative aims to increase the quantity and quality of inventories that represent Brazil, through a thorough adaptation of the datasets that will be granted by ecoinvent (EI) based on a collaboration agreement. The results of this work will be submitted to the SICV (the Brazilian LCA inventories database), so that they can be made available to the entire LCA community, in addition to being integrated into the EI database, which will be responsible for maintaining and updating these datasets in later versions of the database. The proposal evolves in phases, the first of which would be the "Cornerstone", with adaptations of base and priority datasets. It is proposed that four base datasets (pillars) be adapted to better represent the reality of Brazil: Electric Energy, Diesel, Natural Gas and Road Transportation Cargo. These datasets were chosen because they make a significant contribution to various industrial processes, i.e., they are at the base of the economy and because in Brazil there are specificities that justify differentiating them from the international data available in EI.