As PV and battery storage expert assessors, we know the Düsseldorf grid area from numerous assessment assignments — whether valuation assessments for rooftop systems in Oberkassel, damage analysis after storm damage in Benrath, or technical due diligence for investors at MedienHafen. The TAB of Netzgesellschaft Düsseldorf are incorporated into each of our assessments, as grid connection conformity is the basis of every technical evaluation.
Netzgesellschaft Düsseldorf operates the grid of the NRW state capital with approximately 620,000 inhabitants. The mix of inner city and outer districts leads to varying grid capacities. The municipal funding programme for PV and storage has not accepted new applications since January 2026.
A case from Düsseldorf has changed permit practice for solar systems on listed buildings throughout North Rhine-Westphalia. In its judgment of 27 November 2024 (ref. 10 A 2281/23, lower instance Düsseldorf Administrative Court 28 K 8865/22), the Higher Administrative Court of North Rhine-Westphalia ruled that the public interest in expanding renewable energy regularly outweighs heritage protection concerns. The heritage permit may only be refused in exceptional cases where special circumstances stand in the way. The court relies on the priority for renewable energy added to the EEG in July 2022.
For assessments of listed properties the focus therefore shifts. After the ruling, the question is less whether a system is permissible than how it is executed without harming the historic fabric. We document the roof build-up, fixing points and visibility from public space. This documentation also helps when the authority attaches conditions on module colour, frames or layout to the permit.
The municipal funding programme “Klimafreundliches Wohnen und Arbeiten in Düsseldorf” supported photovoltaics and battery storage, among other measures. New applications are currently not possible. According to a report by metergrid, this has been the case since 23 January 2026; funding numbers already issued remain valid for 24 months. When valuing a subsidised system, we check which obligations the grant notice contains.
| 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 Netzgesellschaft Düsseldorf | 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 |
Plug-in generation systems up to 800 W can be registered via the simplified procedure.
Düsseldorf 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).
| Level | Operator | Voltage Level | Relevance for PV/BESS |
|---|---|---|---|
| Transmission Grid | Amprion | 220–380 kV | System stability, EEG feed-in |
| Distribution Grid | Netzgesellschaft Düsseldorf | 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 Düsseldorf:
PV systems along the Düsseldorf Rhine riverbank (MedienHafen, Oberkassel) can cause glare on the water surface and for shipping traffic. Glare assessments are recommended for installations near the waterfront.
The Japan Quarter in Düsseldorf-Niederkassel is developing into a PV hotspot for commercial PV. The dense development requires detailed shading analyses and coordinated grid connection planning.
The Gründerzeit neighborhoods of Flingern and Bilk are experiencing a renovation wave. PV retrofits on historic building roofs require structural reinforcement assessments, as the roof trusses often have only minimal reserves.
Netzgesellschaft Düsseldorf limits feed-in power in several inner-city grids to 70% of module capacity. Storage solutions for self-consumption optimization are therefore becoming increasingly economical.
| 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 Netzgesellschaft Düsseldorf mbH.
Exclusively through a certified electrical contractor. Details: Netzgesellschaft Düsseldorf 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 Netzgesellschaft Düsseldorf from daily practice. Get in touch with us.
Get in Touch| Address | Netzgesellschaft Düsseldorf mbH, Höherweg 100, 40233 Düsseldorf |
| Phone | 0211 821-0 |
| info@netz-duesseldorf.de | |
| Website | Netzgesellschaft Düsseldorf — TAB |
We assess nationwide. These pages summarise the TAB of each grid operator:
Augsburg Berlin Bielefeld Bonn Bremen Dortmund Dresden Duisburg 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: Netzgesellschaft Düsseldorf mbH