Aims to expand grid infrastructure to encourage renewable energy supply. Simplifies the planning of grid expansion projects which involve several federal states or cross national boundaries: power line routes are centrally planned and approved by the Federal Network Agency in a process involving early public participation. Establishes the Federal Network Agency as responsible for the statutory planning approval procedure for grid expansion projects, which means it can define the precise route of the power lines. The transfer of the planning responsibility from state to federal level is intended to streamline the process and avoids the fragmentation of tasks. Grid Expansion Acceleration Act