Modern energy systems can consist of a variety of building blocks that convert, store and transfer different energy-related commodities. The design of energy systems requires the selection of technologies and the definition of their rated power or capacity in a way that all existing loads can be covered. Simultaneously, the plant’s future dispatch needs to be considered, e.g., to account for volatile solar and wind power generation or fluctuating energy demands and commodity prices. Hence, a holistic planning and evaluation process of energy systems represent a challenging task in which we aim to support our customers with individual solutions that combine economic viability, sustainability, and security of supply.