The paper deals with the scale of carbon dioxide emissions in Poland in relation to possibilities of sequestration of this gas by underground storage. Emissions of greenhouse gases, especially carbon dioxide, are presented along with relevant sources of data, analyses and forecasts and commitments to reduce the emissions, resulting from international agreements signed by Poland. Major Polish carbon dioxide emittents are characterized with a special attention paid to large plants emitting over 50,000 tonnes of CO2 per year. Various aspects of the issues of sources and changes in scale of emissions, their distribution and location of major CO2 emittents are presented in graphs and tables. These data are being collected for selecting major CO2 emittents for which it would be possible to select sites for sequestration of this gas by underground storage in liquid fossil fuel deposits.