Advantages No polluting emissions into the air or water No waste heat is rejected as thermal pollution Lifetimes of many decades small maintenance requirements Respond well to sudden changes in demand, making hydroelectricity well suited to matching peak loads The dams can serve multiple purposes Water stored for irrigation flood control municipal drinking water supply, power a hydroelectric plant 复旦大学环境科学与工程系 Department of Environmental Science and Engineering, Fudan UniversityAdvantages: No polluting emissions into the air or water No waste heat is rejected as thermal pollution Lifetimes of many decades small maintenance requirements. Respond well to sudden changes in demand, making hydroelectricity well suited to matching peak loads. The dams can serve multiple purposes; Water stored for irrigation, flood control, municipal drinking water supply, power a hydroelectric plant