The concern about the effects of climate change has become global. Following the Clean Development Mechanism (CDM), a carbon market has emerged. It is an initiative to combat such effects. Colombia in general and Antioquia in particular have the potential to become leading players in this market through the sale of certified emission reductions (CERs). This article presents the ACM0002 methodology for small hydroelectric powers (SHP). Based on the data collected on this subject and the estimates presented, it is concluded that Antioquia has a great potential to market carbon credits. Consequently, two important goals can be achieved: the reduction of GHG emissions and increased revenues that can be reinvested and directed towards the creation of new projects so the natural balance of the areas where the SHP are built can be sustained. Finally, the energy sector is not the only one that can benefit from the CDM, for waste management, infrastructure projects, and water sectors can also implement this type of mechanism.