The predominant trend in the energy industry is the continuously increasing coupling of the electricity, heating and transport sectors. The demands on the flexibility of energy transport networks are rising accordingly. However, as flexibility increases, so does the complexity of ensuring security of supply, as more and more simultaneous demands on the transport networks must be met. At the same time, investment costs for the expansion of critical infrastructure and operating costs must be minimized. The EnergyLab meets these challenges and develops intelligent instruments for the optimal planning of investments in grid expansion and for the efficient and secure operation of transport networks.