Grid feed-in

The electricity grid can be described technically (grid voltage) and functionally (distribution). At the highest level, the supra-regional transmission grid, electricity is transmitted at extra-high voltages of 380 kV or 220 kV, across long distances from large-scale power plants connected to the extra-high-voltage system to centres of electricity use – including to European neighbours. The second level includes the distribution system operators of the regional electricity companies. They distribute electricity at a voltage of 110 kV in relatively large areas, where it is fed into the local networks and supplies industrial bulk buyers, among others. The various voltage levels are connected to one another via substations. Here, the voltage is transformed to higher or lower voltages. At medium-voltage level (approx. 15-30 kV), regional distribution grids supply e.g. industry, public authorities and trade. The low-voltage grid (230/380 volts) finally connects local consumers as well as private households.