The use of modern, controllable operating equipment in combination with state of the art grid planning can make oversized and expensive grid expansions obsolete while continuing to guarantee the security and reliability of the power supply. The future structure of electricity grids depends a great deal on the equipment that will be connected to the grid in the future and their operation. We offer our customers support in planning the grid of the future. In our Digital Grid Lab we have tools which enable us to investigate the combination of new technologies with current control and communication infrastructure from grid operators.