Electricity generated is fed into an electricity grid – regardless of whether the electricity comes from power plants or a solar power unit on the roof of a family home. The grid feed-in is the sum of all power fed in from interconnection hubs, generating units and distribution systems into the transmission grid.
The following published data refers to values of operational measurements.
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.
In the following charts, you can access data on the highest and lowest respective annual grid feed-in values, as well as the respective 15-minute values updated on a daily basis, available for download in Excel 97 Format.