355The Economics of Mitigation Options
make it cost effective. Potential storage areas for the CO
2
would be in geo-
logical formations (such as oil and gas elds, nonminable coal seams, and
deep saline formations), in the ocean (direct release into the ocean water col-
umn or onto the deep sea oor), and industrial xation of CO
2
into inorganic
carbonates.
Current technology captures roughly 85–95 percent of the CO
2
processed
in a capture plant. A power plant that has a CCS system (with an access to a
geological or ocean storage) uses approximately 10–40 percent more energy
than a plant of equivalent output without CCS (the extra energy is for the
capture and compression of CO
2
). The nal result with a CCS is that there is
a reduction of CO