While target network planning designs new systems, optimisation focuses on making existing charging infrastructures more efficient, stable and future-proof. The basis is a detailed inventory of all facilities – from substations and catenary sections to depot chargers. These are considered as technical resources, regardless of their historical use, and recombined to build an optimised network design. We assess network expansions, detour and construction scenarios, substation refits and adjustments due to increasing fleet size. The central tool is energy evaluation, showing whether rectifiers, charging points and transformers have sufficient reserves. In addition, we analyse cost and tariff structures to reduce peak loads and lower energy costs. The result: an optimised overall system that safeguards investments, removes bottlenecks and ensures operational reliability.