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Facts, figures and dates

We have put together an overview of the key facts, figures and dates on our company, our work and the city of Berlin.

High level of supply reliability

Statistically, each Berlin resident will only lose their power supply once every six years. If there is an outage, however, a disruption will last an average of 47 minutes before the energy is flowing again.

Statistically speaking, in Berlin in 2021, every consumer spent approximately 8.3 minutes without electricity.1 For comparison: the same figure for Germany as a whole in 2021 was 12.7 minutes.2

Annual consumption of Berlin in 2021

12.6 TWh

Equivalent CO2 emission in 2021

~5.29 mio ton

The determination of CO2 emissions is explained in our glossary.

Circuit length4 
Cables and wiring35,400 km
Cabling coverage98,8 %
Incorporated high, medium and low voltage assets4
Substations 75
Grid knodes18
Grid and customer stations~ 11,350
Cable distribution cabinets 
(distributed at low voltage level)
~ 16,700

In the metropolis on the Spree, 99 per cent of cables are underground. This means that they are well protected against external influences such as bad weather or lightning, although they can be damaged by underground building work.

Stromnetz Berlin GmbH will invest around 291 million euros5 on grid infrastructure in 2022, especially the expansion and maintenance of the distribution grid in Berlin. Nearly 60 per cent of this expenditure is going to companies from the Berlin-Brandenburg region. And that is still the case, even though all commissions over 430,000 euros are tendered across Europe.

Geographical data4
Number of residents in the grid area3,677,472
Geographical size of the grid area891.12 km2
Investment in grid infrastructure5EUR ~291 million
Stromnetz Berlin GmbH's employees61,509

Electricity generation with a future - local and renewable

There is a clear trend recognisable in Berlin, which will continue to increase over the next few years: alongside traditional electricity plants and CHPs, an increasing number of small, local generation plants are being integrated into our distribution grid. These include photovoltaic plants, wind turbines, thermal power stations in a wide range of sizes and bioenergy plants.

This trend can also be seen in tenant power systems, where in most cases CHP units are used to generate energy.

Tenant power systems evolution in Berlin

The photovoltaic plants and wind turbines represent a particular challenge for us: they do not produce a constant supply of energy. The time at which generation occurs and the amount of energy generated depend on how the wind is blowing and the sun is shining. However, there are also several smaller local generation plants, e.g. small thermal power stations, which feed in regardless of actual demand.

Plants in Berlin

Distribution across the urban area

Number and generation by plants in Berlin (in 2021)

Number of installations8
Installed capacity (in kW)12,000
Energy generated  (in GWh)25
Number of installations10,301
Installed capacity  (in kW)141,000
Energy generated  (in GWh)70

Stromnetz Berlin fact sheet

In German language only.

Number of installations44
Installed capacity  (in kW)44,000
Energy generated  (in GWh)257

1 The average duration of an interruption at low voltage (0.4 kV) due to causes at all voltage levels (110/10/0.4 kV), excluding interruptions caused by force majeure, value for 2021.
2 Federal Network Agency, SAIDI-Wert 2021,
3 This data has not been published under statutory publication obligations.
4 The deadline is 31 December 2021.
5 Planned Investment in 2022
6 Status December 2021