Duisburg as an industrial hub with Europe's largest inland port places special demands on PV assessors. The high industrial grid utilization in the Netze Duisburg service area means that we must evaluate grid capacity particularly carefully in every assessment. From warehouse roof PV in Rheinhausen to storage projects in the logistics center — TAB verification is always our top priority.
Netze Duisburg serves approximately 500,000 inhabitants. As the location of Europe's largest inland port (duisport) and thyssenkrupp, the grid has a high industrial load.
At the Duisburg Gateway Terminal in the port of Duisburg, climate-neutral operation of a container terminal is being trialled. The research project enerPort II, led by Fraunhofer UMSICHT, is funded by the Federal Ministry for Economic Affairs with around EUR 11.6 million. According to energieforschung.de, the energy system combines a 1,300 kWp PV system, a 1,600 kWh battery storage system, two fuel cell containers of 600 kW each and two hydrogen CHP units of 940 kW each. The grid connection permit was in place in May 2025. Such hybrid systems require a different depth of inspection than a rooftop system: protection concept at the grid connection, interaction of the storage, fuel cell and CHP controls, and a robust metering concept.
The many halls in the port and industry are subject to the solar obligation under Section 42a of the North Rhine-Westphalia Building Code: for new non-residential buildings since 1 January 2024, for new residential buildings since 1 January 2025 and for complete renewal of the roof covering since 1 January 2026. It is fulfilled by covering 30 percent of the net roof area or alternatively through minimum capacities set by the North Rhine-Westphalia Solar Systems Ordinance (SAN-VO NRW). For non-residential buildings, violations can incur fines of up to EUR 50,000.
Lightweight hall roofs often have only small load reserves. Whether reinforcement is needed is clarified by a structural assessment before planning. For existing halls exposed to industrial dust, soiling and cleaning cycles also belong in the yield forecast.
| Regulation | Scope | Relevance for PV |
|---|---|---|
| VDE-AR-N 4100 | TAR low voltage | Mandatory: meter panel, service entrance, protection concept |
| VDE-AR-N 4105 | Generation systems on LV grid | Mandatory for connection to the low-voltage grid |
| VDE-AR-N 4110 | TAR medium voltage | Mandatory for connection to the medium-voltage grid |
| Supplementary TAB Netze Duisburg | Regional supplements | Grid operator-specific requirements |
| Requirement | Specification |
|---|---|
| Meter type | eHZ, three-point mounting |
| Surge protection | Type 1+2 combined arrester (mandatory for new systems) |
| SLS switch | selective circuit breaker upstream of the meter |
| Space reserve | 1 slot for smart meter gateway |
| Equipotential bonding | to main earthing busbar |
Balcony power plants up to 800 W can be registered with Netze Duisburg through the simplified registration procedure.
Duisburg is located in the Amprion-control area. The responsible transmission system operator (TSO) is Amprion GmbH. Amprion is responsible for system stability in the extra-high voltage grid (220/380 kV). At the regional distribution grid level, Westnetz is also an important player.
| Level | Operator | Voltage Level | Relevance for PV/BESS |
|---|---|---|---|
| Transmission Grid | Amprion | 220–380 kV | System stability, EEG feed-in |
| Distribution Grid | Netze Duisburg | 0,4–20 kV | TAB, grid connection, meter panel |
| Customer System | System Operator | 0.4 kV (LV) | PV array, BESS, inverter |
Regional factors for planning and assessment in Duisburg:
Duisburg's proximity to ThyssenKrupp Steel causes elevated dust emissions. PV modules in Bruckhausen and Marxloh soil up to 3x faster than the national average — regular yield monitoring and cleaning schedules are recommended by expert assessors.
The Duisburg port (duisport) with over 2 million m² of warehouse roof space is one of Germany's largest PV potential sites. Projects require coordination between Netze Duisburg, Westnetz, and the port authority.
In northern Duisburg (Walsum, Hamborn), mining damage and ground subsidence occur. Ground-mounted PV requires geotechnical assessments and flexible mounting systems.
Duisburg is served by Netze Duisburg and Westnetz (RWE subsidiary). The responsible operator depends on the specific street — prior clarification is essential.
| Occasion | Our Service |
|---|---|
| Acceptance Assessment | TAB conformity check, defect report |
| Dispute with grid operator | Independent technical evaluation |
| Systems from 30 kWp, medium voltage, capacity bottleneck | Grid compatibility assessment, grid analysis, alternative concepts |
| Defect Assessment | DIN VDE 0100-600, thermography, EL |
VDE-AR-N 4100 and 4105 (low voltage) and 4110 (medium voltage) plus supplementary TAB der Netze Duisburg GmbH.
Exclusively through a certified electrical contractor. Details: Netze Duisburg website.
Must comply with VDE-AR-N 4100 and supplementary TAB. Older cabinets (pre-2010): eHZ, surge protection, SLS. Cost: EUR 1,000-2,500.
Depends on system size and scope. Contact: info@pv-bess-assessor.com or +49 89 97 31 37 43.
For systems from 30 kWp, medium voltage, grid compatibility issues, disputes with the grid operator, acceptance of commercial systems.
We are familiar with the TAB of Netze Duisburg from daily practice. Get in touch with us.
Get in Touch| Address | Netze Duisburg GmbH, Bungertstr. 27, 47053 Duisburg |
| Phone | 0203 604-0 |
| info@netze-duisburg.de | |
| Website | Netze Duisburg — TAB |
We assess nationwide. These pages summarise the TAB of each grid operator:
Augsburg Berlin Bielefeld Bonn Bremen Dortmund Dresden Düsseldorf Frankfurt Hamburg Hannover Karlsruhe Köln Leipzig Mannheim München Münster Nürnberg Stuttgart
Last updated: 2026-09-28 | Author: Christoph S. Prestele, TUV-certified expert assessor | Source: Netze Duisburg GmbH