Introducing more clean energy results in marginal changes on the performance of composting strategy (1.7%, 7.1%,and 4.7% for global warming, acidification, and nutrient enrichment between Scenarios B1 and B2, respectively). By contrast, energy mix has significant influence on the environmental performances of both landfilling and combined digestion and composting technologies.For example, the impacts to acidification increased by 73.7% from Scenario A1 to Scenario A2, and those to nutrient enrichment even turned to positive from negative.