The mostly publicly-owned agency has released a study pointing to a need for between 135,000km and 193,000km of new distribution lines by 2030.

The lower end of the extension will be necessary under a government plan for the growth of Germany’s high-voltage grid. The high-end scenario refers to more ambitious extension plans for renewable power by Germany's states.

Another 21,000km-25,000km of existing distribution lines also have to be upgraded, Dena says.

Due