Today, the need for energy is increasing day by day and mankind is turning to bioenergy sources. City waste is a source of bioenergy and these wastes are not adequately marketed. The conversion of city waste into energy and marketing as biomass will contribute to keeping cities clean as a habitat. The emission standards of large cities reach dangerous levels for human health. Aware of this situation, cities are building facilities such as waste processing and waste gas. While generating energy from wastes, it is ensured that the city remains clean, and on the other hand, it contributes to meeting the energy needs of human beings. This study focuses on the conversion of city waste into energy and marketing as a source of bioenergy. Cities need to grow decently, contribute to employment and evaluate waste in the name of employment and economy for sustainable city. Bioenergy sources are increasingly important and biomass trade is being carried out that exceeds the borders of the city and country. Biomass trading is also an opportunity to evaluate vegetable wastes that have not yet gained economic value in and around the city. In this study, the literature has been examined and observations related to city wastes in Sinop province and its districts and vegetable wastes in Gökırmak and Kızılırmak deposits are included. The findings show that more research and studies should be done on bioenergy resources and that urban waste should be evaluated and marketed among biomass resources. In addition, it is suggested to dispose of plant wastes in urban areas by burning and to evaluate them as biomass instead of causing pollution in living areas.