Article contains a detailed analysis and a preliminary selection of potential CO? emitters that can supply gas for CCS-EOR projects in oil fields clusters in Poland. The idea of CO? injection into clusters arises from the fact that oil reservoirs in Poland are relatively small, but very often located close together. Reservoirs grouping significantly increases the potential storage capacity and improves economic indicators. In addition, CCS-EOR projects combine CO? storage (CCS) with an increase in production from mature oil fields (EOR). The analysis was performed using a database of carbon dioxide emitters in Poland created by the National Centre for Emissions Management. This database contains a list of all registered CO? producers with annual emissions exceeding 1 Mg. On this basis, potential CO? sources for previously selected four clusters of oil reservoirs were chosen.