Berlin

== Energy ==
[[File:Berlin-mitte heizkraftwerk-mitte 20060605 629.jpg|thumb|Heizkraftwerk Mitte power plant]]

Berlin's two largest energy provider for private households are the Swedish firm [[Vattenfall]] and the Berlin-based company [[GASAG]]. Both offer electric power and natural gas supply. Some of the city's electric energy is imported from nearby power plants in southern [[Brandenburg]].<ref>{{cite web|url=https://www.siemens.com/entry/cc/features/greencityindex_international/all/en/pdf/berlin.pdf|title=European Green City Index Berlin Germany|website=Siemens|year=2009|access-date=19 December 2016|archive-url=https://web.archive.org/web/20180913113150/https://www.siemens.com/entry/cc/features/greencityindex_international/all/en/pdf/berlin.pdf|archive-date=13 September 2018|url-status=dead}}</ref>

{{As of|2015}} the five [[List of power stations in Germany|largest power plants measured by capacity]] are the Heizkraftwerk Reuter West, the Heizkraftwerk Lichterfelde, the Heizkraftwerk Mitte, the Heizkraftwerk Wilmersdorf, and the Heizkraftwerk Charlottenburg. All of these [[power station]]s generate [[electricity generation|electricity]] and [[Heat|useful heat]] at the same time to facilitate buffering during load peaks.

In 1993 the power grid connections in the Berlin-Brandenburg capital region were renewed. In most of the inner districts of Berlin power lines are underground cables; only a 380&nbsp;kV and a 110&nbsp;kV line, which run from Reuter substation to the urban [[Autobahn]], use overhead lines. The [[Berlin 380-kV electric line]] is the backbone of the city's energy grid.