Industrial sectors responsible for large amount of CO2 emissions in Poland are characterized. On the basis of official statistics, figures from local administration and industrial institutions the authors presents: magnitude of emissions from selected categories, sub-categories and sectors of industry (in accordance with methodology of IPCC), concentration of CO2 in combustion gases and those emitted by industry. A special attention was paid to those sectors of industry which may be the first to act as a source of carbon dioxide for underground storage in the nearest future.