Publication under the Energy Industry Act (Energiewirtschaftsgesetz - EnWG)
The act's aim is, among other things, to use regulated grid access to ensure effective competition among electricity providers and guarantee the long-term, high-performing and reliable operation of energy supply grids.
The act provides publication obligations of structural features and network-relevant data, which we make available below.
Due to the amendment of the Energy Industry Act (EnWG) as well as the StromNEV and StromNZV of August 10, 2021, we have compiled all relevant data in accordance with Section 23c Paragraphs 1 and 3 EnWG on this page.
Publication obligation pursuant to Section 23c para. 1 EnWG
Last update: March 2022
Electrical circuit lengths in km
[Sec. 23c (1) fig. 1 EnWG]
|High Voltage||Medium Voltage||Low Voltage1|
|Overhead electricity lines||153||0||285|
1 including home connections
Installed capacity in MVA
[Sec. 23c (1) fig. 2 EnWG]
All data includes delivery to the downstream grid or transformer level.
|High/Medium Voltage||Medium/Medium Voltage||Medium/Low Voltage|
Annual performance extracted in the past year per grid and transformer level in kWh
[Sec. 23c (1) fig. 3 EnWG]
All data includes delivery to the downstream grid or transformer level.
Summary grid structure data
Number of withdrawal points
[Sec. 23c (1) fig. 4 EnWG]
|High/Medium Voltage||Medium Voltage||Medium/Low Voltage||Low Voltage|
Number of residents
[Sec. 23c (1) fig. 5 EnWG]
|Number of residents in the grid area||3,677,472|
Data provided by the Statistischem Landesamt (State Office for Statistics), as on 31 December 2021.
[Sec. 23c (1) fig. 6 EnWG]
|Supplied area high voltage and medium voltage in km2||891.12|
|Supplied area low voltage in km2||499.41|
Data provided by the Statistischem Landesamt (State Office for Statistics), supplied area as on 31.12.2021
[Sec. 23c (1) fig. 7 EnWG]
|Geographical size of the grid area in km2||891.12|
Data provided by the Statistischem Landesamt (State Office for Statistics), as on 31.12.2021
Summary grid area
Metering devices on withdrawal points
[Sec. 23c (1) fig. 8 EnWG]
with power measurements recorded on a quarter-hourly Basis (RLM)
|with a meter reading measurement||0|
|Other withdrawal points||2,401,713|
Responsible meter operator
[Sec. 23c (1) fig. 9 EnWG]
Stromnetz Berlin GmbH
Contact grid use
[Sec. 23c (1) fig. 10 EnWG]
Steffen Voth, head of Customer management
Publication obligation pursuant to Section 23c para. 3 EnWG
Last update: March 2022
Annual maximum load and load curve [§ 23c (3) fig. 1 EnWG]
Data on the annual maximum load on the distribution grid and the temporal curve for the load.
The annual maximum load is the maximum performance value that occurred on a grid across all voltage levels in a given year.
The annual maximum load for Berlin's distribution grid in 2021 was 2,119 MW.
The annual maximum load was reached on 8 December 2021 at 18:00.
2019 and once
Amount and total load of grid losses [§ 23c (3) fig. 2 and 3 EnWG]
Data on grid losses on the distribution grid as an amount of energy and the temporal curve of the total load of grid losses.
The grid losses as an amount of energy were found by calculating the difference between feed and withdrawal.
The total amount of grid losses for Berlin's distribution grid in 2021 amounted to 403,882,994 kWh.
The amount is determined through calculations.
Total load of grid losses
The total load of grid losses is the load profile of the grid losses across all grid and voltage levels as 1/4h performance values. The performance values are determined through calculations.
Total load for non-load-profiled customers [§ 23c (3) fig. 3 EnWG]
Data on the total load for non-load-profiled customers and the temporal curve of the total load.
The total load for non-load-profiled customers (residual load) is the load profile of the total of all withdrawal points for standard load profile customers (SLP customers) as 1/4h performance values.
As the withdrawal points for SLP customers do not have registered performance measurement equipment, this load profile can only be determined through calculation.
The residual load can be found using the following calculation:
Residual load = grid load - grid losses - withdrawal load of load-profiled customers
Total load timetable predictions for SLP customers [§ 23c (3) fig. 4 EnWG]
Data on the total load timetable predictions for SLP customers and the temporal curve of the total load.
The total of the timetable predictions for standard load profile (SLP customers) is the load profile calculated using the supplier timetables for their respective SLP customers. The timetables underpin the annual output predictions and the load profiles assigned to each SLP customer.
Timetable prediction process
The summation of the timetables of the suppliers to SLP customers in Stromnetz Berlin GmbH's distribution grid is laid out in the following file, Total Load Timetable Predictions for SLP Customers.
Maximum withdrawal load and withdrawal from the upstream grid operator's grid [§ 23c (3) fig. 5 EnWG]
Data on the maximum withdrawal load and withdrawal from the upstream grid operator's grid.
The maximum withdrawal load is the maximum simultaneous output of all transfers from the grid run by the upstream network operator. The withdrawal from the upstream grid operator's grid is the total of all transfers (work).
The values are respectively determined either through measurement or calculation.
Maximum withdrawal load from the upstream grid operator's grid
The maximum withdrawal load for 2021 for the Berlin distribution grid was 1,681 MW. The maximum withdrawal load for 2021 occurred at 13:00 on 26 July 2021.
Withdrawal from the upstream grid operator's grid
The amount withdrawn in 2021 totalled 7,932,679,646 kWh.
Result of difference balancing [§ 23c (3) EnWG combined with § 12 (3) StromNEV]
Actual withdrawals by end consumers who are supplied according to a simplified process (standard load profile) deviate from the predictions in terms of the amount withdrawn and the time at which withdrawals were made.
The grid operator runs a difference balancing group for these deviations for all end consumers supplied according to the simplified process (standard load profile).
The result of the difference balancing for Stromnetz Berlin GmbH's distribution grid is published here pursuant to Section 12 (3) StromNZV.
Total feeds for each voltage level [§ 23c (3) fig. 6 EnWG]
Data on the total feeds for each voltage level and the temporal curve.
The total of all feeds for each voltage level is the total of feeds for the voltage level as an amount (work) in kWh, determined either through measurement (e.g. for the Renewable Energy Act over 500 kW) or by using feed profiles (e.g. minor power stations, Renewable Energy Act below 500 kW).
Feeds 2021 shown monthly in kWh
|Month||High Voltage||Medium Voltage||Low Voltage|
Load process [§ 23c (3) fig. 6 EnWG]
The temporal curve for the Berlin distribution grid is calculated using measurements and profiles corresponding to the amounts.
Amount and median price of energy losses [§ 23c (3) fig. 7 EnWG]
Data on the amount and price of energy losses.
Energy losses are the amount of energy to cover grid losses across all grid and voltage levels in kWh.
Amount of energy losses
The total amount of energy losses across all voltage levels for the Berlin distribution grid in 2021 totalled: 403,882,994 kWh.
Median price of energy losses
The median price of energy losses in 2020 was: 4.826 ct/kWh.
The median price is found using all procurement to cover the losses in relation to the amount across all grid and voltage levels.
Grid expansion plan [according to sec. 14 (2) in conjunction with sec. 14d EnWG]
Influencing factors on target network planning
The measures in Berlin’s 110 kV distribution grid are characterised by the replacement of 110 kV grid nodes, 110 kV lines and 110/10 kV substations, as well as the optimisation of the 110 kV grid structure with regard to the changing generation and load situation in the future and thus the supply task. The dismantling of the remaining 110 kV overhead lines in the eastern part of the city, as well as conversion measures and expansions at the 380/110 kV grid interfaces to the transmission grid, also result in significant changes in the 110 kV grid structure. The grid development towards the target grid is therefore the result of meeting several other requirements (renewal of plants, replacement of overhead lines, conversion measures and expansions at the 380/110 kV grid interfaces, etc.) in addition to the satisfaction of the service provision (provision of sufficient grid capacities to ensure the supply task). The concerns of the upstream transmission system operator are always taken into account and coordinated bilaterally.
Influencing factors on the supply task
The forecast of the future supply task for the 110 kV distribution grid is made up of the requirements of end customers directly connected to the high-voltage grid, as well as the changes in the supply task of the subordinate network levels. The following changes in customer requirements with regard to impact currently apply in medium and long-term planning.
The main influencing factors are:
- Replacement of coal-fired CHP systems with more flexible gas-fired CCGT systems with combined electricity-operated heat-only boilers (PtH)
- Requests for services (e. g. from data centres)
- Development areas (e.g. the former Tegel Airport)
While the changes in the working points of the generation and extraction power of the CHP plants can be planned relatively well in terms of their level and timing, the power requests, such as those from data centres, can only be integrated reliably into the grid planning once the connection installation contracts have been concluded and, due to the very high demand services, are always a particular challenge for the distribution system operator and upstream transmission system operator due to their singularity. These requests can therefore only ever be handled very individually, in very location-based manner, and reactively. Developments, such as those of the former airport site, require the selective construction of new substations. In these cases, Stromnetz Berlin ensures that the development planning of the area takes into account corresponding area provisions for the construction of a substation and that corresponding performance developments are planned.
The main influencing factors are:
- Electrification of public transport (bus fleet)
- General load increase due to electromobility
- Compaction of the development (e.g. Alexanderplatz, Europacity in the main station district, residential construction projects)
The electrification of buses in the public transport network can be very well planned with regard to quantities and timing. Planning talks are held regularly for this purpose. Power requirements are provided via a manageable number of high-performance, medium-voltage connections. The forecast of the development of private electromobility, on the other hand, is currently still very difficult, and is heavily dependent on future mobility in Berlin and the course set by politicians. In the form of studies, Stromnetz Berlin has determined that for an electrification level of around 20% of the current vehicle fleet, an additional output of around 140 MW would have to be provided on the medium-voltage side and this demand at public and private charging points will be distributed fairly evenly over the entire urban area. With regard to 75 substation areas, this means an output range of between 1 and 4 MW per substation area and can be easily provided with today’s medium and high-voltage grid. The known urban development concentrations have led and continue to lead to the requirements for further substations and have already been taken into account in the network planning, in a similar way to the electrification of the bus depots of public transport.
Procedure for determining the future supply task
In order to obtain reliable forecasts, Stromnetz Berlin is responding to these developments as follows:
- Regular planning meetings between the operators of the CHP plants and Stromnetz Berlin to take into account the change in the working points of the increasingly flexible generation and extraction capacity (more flexible operation of hybrid CHP plants).
- Regular planning meetings between the local public transport operator and Stromnetz Berlin for early planning consideration of the required power requirements for complete electrification of the current bus fleet.
- Creation of its own and participation in external studies to determine scenarios of supported effects of the private charging infrastructure, rooftop PV systems and heat pump potential on Stromnetz Berlin’s distribution networks.
- Monitoring the development of the number of public and private charging infrastructures, as well as decentralised generation in the medium and low-voltage grids.
- Preparation of an annual analysis of the load development (retrospective) and load forecast (outlook).
These results are also incorporated into the regular planning meetings between 50Hertz Transmission and Stromnetz Berlin to exchange and coordinate capacity planning at the grid interface and the development of the design-relevant grid usage cases. In addition, bilateral coordination of the specific grid expansion and grid conversion measures to be planned takes place here, as well as the definition of the expansion options in the 380/110 kV grid coupling points (room for manoeuvre for selective service requests).
System services and flexibility services
The reactive power required for voltage stability is provided in the high-voltage grid by fully integrated grid components (vollständig integrierte Netzkomponenten - VINK).
Due to the EU directive on the market procurement of non-frequency-bound ancillary services, the Federal Network Agency (Bundesnetzagentur) has classified the market procurement of black start capability for transmission system operators and voltage stability (reactive power) as efficient.
The resulting specifications are then taken into account for future voltage control measures.
For controllable consumer devices such as interruptible night storage heaters and heat pumps as well as electric vehicles, a reduced network fee is currently granted in accordance with Section 14a EnWG. The consumption device is controlled or interrupted via a switching device. In addition, no flexibility service is currently being used.
With the current new regulation in Section 14a EnWG, the Federal Network Agency will in future set uniform national regulations in accordance with Section 29 (1), e.g. to reach agreements on the network-oriented control of controllable consumption devices or of network connections with controllable consumption devices (controllable network connections) in return for reductions in network charges. The determinations of the Federal Network Agency will then apply in the future.
Peak capping according to Section 11 (2) EnWG
The peak cap according to Section 11 (2) EnWG is currently not applicable.
Based on the described procedure, the measures relating to network expansion and network conversion are developed and integrated into medium and long-term planning together with the alternative measures. The adaptation of the grid capacity to future requirements and supply tasks is therefore an integral part of Stromnetz Berlin’s medium- and long-term planning, with the aim of avoiding grid bottlenecks as far as possible (including taking into account the grid capacity to the transmission grid) and maintaining a distribution grid that is both compliant and efficient.
Currently there are no grid bottlenecks in the grid of Stromnetz Berlin GmbH.
Last update September 2022
Publications on the grid connection, if not included on this page, can be found on the "Connecting" page.
General specifications for grid connections in the low-voltage grid [according to Sec. 18 (1) EnWG]
General specifications for grid connections for end users in the low-voltage grid can be found in the
Minimum technical requirements for plants on the low-voltage grid can be found in the
- Technical Connection Requirements for connecting to the Low Voltage Network (TAB NS Nord 2019, Version November 2019)
- TAB NS Nord 2019 Berlin Supplement
- TAB NS Nord 2019, Stand November 2019 - Berlin explanation
- Explanation 1 - voltage feed for intelligent measuring systemes, TAB NS Nord 2019
The general conditions for network access are part of the network usage contract.
Minimum technical requirements for generating plants and storage of electrical energy [according to Sec. 19 (1) EnWG]
Publications on the technical minimum requirements for generating plants and storage of electrical energy, if not included in the publications on this page, please refer to the page "Generating plants and storage".
Grid access [according to Sec. 20 (1) EnWG]
Publications on grid access, if not included on this page, can be found on the "Grid use" page.
Grid fees [according to Sec. 21 (3) EnWG]
Publications on grid fees, if not included on this page, can be found on the page "fees".
Base supplier for Berlin's distribution grid [according to Sec. 36 (2) EnWG]
On 1 July 2021, we established Vattenfall Europe Sales GmbH as a base supplier on Berlin's distribution grid under Section 36 (2) EnWG (Energy Industry Act).
Last update July 2021
Complaint and arbitration (according to § 111a and 111b EnWG)
Information on complaints and arbitration procedures can be found on the "Complaints and Arbitration" page, if not included in the publications on this page.
Equal treatment report
The Energy Industry Act provides for the separation of the network area from the market areas according to §§ 6 ff. EnWG. In order to monitor the unbundling regulations, an equal treatment report must be published annually, in accordance with Section 7a (5) sentence 3 EnWG, on the measures taken to ensure the non-discriminatory exercise of the network business.
The equal treatment report of 2021 is available on the BEN Berlin Energie und Netzholding GmbH website.
24h Störungsmanagement Strom (Electricity Fault Management)
Störungsmanagement Strom is the central resource for reporting faults in the energy supply and troubleshooting.
All downloads in German language only.
The data published here were produced and prepared for release with the greatest care. Nonetheless, errors in recording and transmission cannot be ruled out. Stromnetz Berlin GmbH therefore expressly reserves the right to change the published data at any time and assumes no responsibility for its accuracy. If arrangements are made based on the data published which lead to damages to the user or a third party, Stromnetz Berlin GmbH cannot be held liable unless they were aware of the data's inaccuracy at the time of publication and intended to damage the user or a third party.
The distribution system operator Stromnetz Berlin GmbH operated under the name “Vattenfall Europe Distribution Berlin GmbH” until April 1st, 2013 and was part of the Vattenfall Group until June 30th, 2021. Some of the files published here were created before the day of the change of name and are still available with the company name valid at the time of creation due to the legal publication obligations. Some of the files published in the period from April 2nd, 2013 to June 30th, 2021 contain a reference to the Vattenfall Group.