The UNFCCC and the Kyoto Protocol encourage the Parties to protect and enhance sinks and reservoirs for greenhouse gases, including CO 2 capture and storage (CCS). This paper proposes an evaluation of CCS pros and cons. A comparison of the electricity costs associated to the different methods of CO 2 emission reduction is presented. In particular, a comparison is made between the coal and gas power plants with CO 2 capture and non-CO 2 -emission technologies such as nuclear, wind turbine,

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... lic and solar power. Which of these offer the best solution in terms of installation time and economics? Even if CO 2 capture could take advantage of the existing proven technologies, which will hopefully be available at a low cost in the future, unfortunately too much rests unknown regarding the long-term sequestration of CO 2 , and there remains much work to be done in this sector before CCS will become a viable method in the arsenal to mitigate climate change.