Xendee serves as a cloud-based platform for designing energy systems, enabling engineers, planners, utilities, developers, and project teams to efficiently model, simulate, and analyze intricate energy infrastructures like microgrids, utility grids, renewable energy assets, storage solutions, and hybrid energy systems with both accuracy and adaptability. By integrating sophisticated system modeling, optimization techniques, and scenario analysis, it allows users to effectively size and compare generation, storage, and load profiles, assess economic viability, and predict operational results in real-world settings, empowering teams to make informed decisions without relying on manual spreadsheets or isolated tools. Additionally, Xendee offers multi-objective optimization capabilities to help users minimize costs, enhance resilience, or achieve sustainability goals while considering constraints such as fuel availability, tariffs, emissions regulations, and reliability standards, all while delivering comprehensive outputs like energy production curves and cash flow forecasts. This level of detail ensures that stakeholders can gain valuable insights into the performance of their energy systems.