Discussions about reducing carbon emissions typically focus on large emitters while small and medium-sized organizations are outside this scope. The aim of this work is to propose the creation of mini-markets for carbon credits in chains of organizations to include small and medium-sized organizations, integrating urban and rural areas in the same region, offering an important contribution to smart and sustainable cities. The research took the meat and dairy chains as a reference and conducted a brief case study in two organizations. The result is a governance model that includes small and medium-sized organizations in the context of reducing emissions and generating benefits. This research can be extended to other chains and allows for compensation between companies in the same segment. A segment can be a production chain or a group of urban and rural organizations in the same region. The proposed principle is that initiatives to reduce greenhouse gas (GHG) emissions by region contribute to better overall governance of such initiatives, as the materialization of projects and results becomes more agile and effective.