Abstract: Hydroelectric engineering information models provide a basis for data support to information management of hydroelectric projects. This paper discusses the Industry Foundation Classes (IFC) data model, a widely used data standard for building information models (BIM), and presents an IFC-based hydroelectric engineering information model. In this IFC-based model, definitions of the new entities characterizing hydroelectric projects were added to its layers of domain schema, shared schema, core schema and resource schema, and we tested it and examined its applicability to a real hydroelectric project. The results indicate that in comparison to the IFC standard, the new model enables a satisfactory description of the new entities and their relationships and improves accuracy and standardization in representation of project attributes. Thus it is a better data support to storage and exchange of the information for the full life-cycle of hydroelectric projects.