The Coal-Fired Steam Power Plant development project has a crucial role in encouraging economic growth. The CoalFired Steam Power Plant is a complex EPC project that often experiences delays in its completion. One of the factors influencing delays is scope changes. The delay of this Coal-Fired Steam Power Plant project can be overcome with a clear scope through the approach of project management tools, called WBS. This study aims to the development of risk-based standardized WBS for civil and structural works of Coal-Fired Steam Power Plant construction projects in Indonesia to improve time performance. Work Breakdown Structure is a decomposition of activities so that the project is easier to manage, and it can increase the probability of project success. The development of WBS standards using expert surveying and validation methods includes the highest risks affecting project time performance. The standard WBS for civil and structural works of the CFSPP project consists of 9 levels and 14 dominant risks to time performance. The recommended risk response is preventive and corrective measures to analyze the impact of dominant risks on-time performance.