Map of large stationary sources of CO₂ in North America. The colour of a dot indicates the industry sector of the CO₂ emitting facility, whereas the dot size represents the relative quantity of the CO₂ released.  Facilities / Plants.  Green for Agricultural processing, orange for cement, blue for electricity generation, yellow for ethanol, pink for fertilizer, grey for industrial, red for petroleum and natural gas, purple for refinery and chemical, black for unclassified.  Annual CO₂ Emissions (Tonnes).  Small dot for 100,000 – 250,000.  Medium dot for greater than 250,000 – 750,000.  Large dot for greater than 750,000.

Diagram of Carbon Capture and Storage Process. CO₂ produced as a result of burning coal, natural gas and biomass is stored in unmineable coal, oil and gas reservoirs and saline formations which sit below the lowest underground source of drinking water, a caprock and reservoir rocks. The CO₂ displaces methane in coal as well as trapped oil, allowing it to be extracted and sold to market.

Diagram of geological formations and types of sedimentary storage.  1. Alluvial (Alluvial Fan).  2.  Basalt (Lava Flow).  3. Coal/Shale (Swamp). 4. Deltaic (Delta). 5. Deep marine. 6. Eolian (Dunes). 7. Fluvial (Stream). 8, Lacustrine (lake). 9. Reef. 10. Shelf/platform.  11. Slope/Rise.  12. Strandplain (Beach/Barrier Island). 13. Strandplain (Beach). 14. Stradplain (Tidal Flat). 15. Turbidite (Deep-Sea Fan).