The grid, connecting all power plants, storage facilities and consumers, is the backbone of a secure supply of electricity. The means that secure grid operations around the clock are fundamental to a prosperous society.  

With paradigm shift from a centralised utility to decentralised, and increasingly volatile, power generation, the electricity system is in the midst of the greatest upheaval in its successful history. In addition, electricity consumption is set to grow significantly due to decarbonisation.  

The Swiss electricity grid has seven grid levels at different voltages. Gone are the days when high-voltage transmission systems could operate almost independently of distribution networks at the lowest level. To ensure reliable and safe operations, system operators now need to put in place efficient coordination between distribution levels. The transmission system must over the long term be developed in conjunction with regional distribution networks to ensure that it can meet future needs.  

This means that further information is required for grid planning, including knowledge about the structure and renewal requirements of existing grids as well as regional needs for connecting new power plants or end consumers.