It’s a long way to your socket

We think electricity just comes out of a socket. But it travels a long way to get there.

The electricity generated in our own power stations or purchased from our suppliers is carried on our 110 kV high-voltage network to one of our transformer stations. There, the high-voltage electricity is converted (or as we say “transformed”) to a medium voltage (10 kV or 20 kV). It is then carried on our 1300 km medium-voltage network to one of around 1600 transformer or consumer substations in the urban area. Power is supplied to many industrial customers, for example, via these consumer substations. In the DREWAG transformer substations, the power is further transformed to a lower voltage (230 V or 400 V). From here, approximately 2,800 km of low-voltage lines carry electricity to nearly 50,000 domestic service meter boxes. From there, it’s just a few more metres to your socket.

Technology diagram

Our DREWAG sites

		Power is supplied within the city of Dresden via the 110 kV network, which is connected to the 110 kV network for the surrounding countryside. It is linked to the 380 kV grid via large transformers. The transformer stations convert the power from 110 kV to the distribution voltage of 10 kV or 20 kV. Voltages in the transformer stations 110/10 kV 110/20 kV Electrical capacity 45 MVA to 126 MVA (installed transformer capacity per transformer station) Number of transformer stations in the city of Dresden: 12

The transformers in the transformer substations convert the power from 10 kV or 20 kV to the voltage usable by private and business customers of 230 V or 400 V. Voltages in the transformer substations 10/0,4 kV 20/0,4 kV Electrical capacity 160 kVA to 630 kVA (per transformer) Number of transformer substations in the city of Dresden approximately 1600

	Our transformer stations and substations Our combined heat and power plants and heat plants Our water works