This chapter details the prerequisite and feasibility study for virtual power plant (VPP) projects. SuccessPrerequisite Condition and Feasibility Determination hinges on adhering to regulations, having a supportive market mechanism, effective operation strategies, load-generation balance, and proper infrastructure. Construction conditions are crucial and categorized into external, demand-side, and technical aspects. External conditions cover policies like national energy strategies and market operation mechanisms, with various regulations and market rules providing a framework. Demand-side conditions focus on grid operation, user safety, and resource consumption challenges, such as new energy integration and load fluctuations. Technical conditions require equipment to be intelligent, secure, and user-friendly, enabling safe access, automation, data integrity, and good user interaction. Commercial conditions related to load categories are also noted.