Register a wallbox with the grid operator: notification, 12 kVA and the two-month deadline
Short answer: A permanently installed wallbox must be notified to the competent grid operator before commissioning. That is § 19(2) sentence 2 of the Low Voltage Connection Ordinance (NAV). Consent is also required if the combined rated power exceeds 12 kilovolt-amperes per electrical installation – the Bundesnetzagentur equates that with about 11 kW. In that case the grid operator must respond within two months.
Anyone may file the notification. Installation work itself may be done only by the grid operator or a contractor listed in an installer register. A private wallbox does not have to be notified to the Bundesnetzagentur or entered in the Marktstammdatenregister.
What you actually do
- Identify the grid operator (on the electricity bill or via the local utility).
- Notify the charging equipment before commissioning via the operator’s online form. Since 1 January 2024 the operator must offer this on its website (NAV § 19(4)).
- State the wallbox rating and any other charging equipment on the same customer installation. If the combined rating exceeds 12 kVA, wait for consent before switching on.
- Have the work done only by a listed installation firm or the grid operator (NAV § 13(2)).
- If the connection rating is above 4.2 kW and you commission the wallbox on the low-voltage grid on or after 1 January 2024, § 14a EnWG also applies (controllable consumption device). That is a separate track: sign a controllability agreement, choose the control method, and arrange metering/control equipment.
Notification and consent are not the same
| Step | When | Legal basis |
|---|---|---|
| Notification before commissioning | every EV charging facility | NAV § 19(2) sentence 2 |
| Consent before commissioning | combined rated power above 12 kVA per electrical installation | NAV § 19(2) sentence 3 |
| Online notification channel | operators must provide it since 1 January 2024 | NAV § 19(4) |
| Installation | only the grid operator or a listed installer | NAV § 13(2) sentence 4 |
| Controllable consumption device | wallbox above 4.2 kW, commissioned from 1 January 2024 | EnWG § 14a, Bundesnetzagentur determinations |
The notification under NAV § 19(2) sentence 2 may be made by anyone. The operator may not require a listed installer to submit it. Works on the electrical installation remain installer-only.
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What the operator may check – and what it may not
Above 12 kVA the operator must respond within two months of receiving the notification. If it withholds consent, it must set out the obstacle, possible remedies and the time needed. Insufficient grid capacity may delay the connection. According to the Bundesnetzagentur it is not a reason for a final refusal. The operator must expand the grid as required.
Under the § 14a EnWG determinations the operator may also no longer refuse or delay the connection of new private charging equipment by pointing to possible local overload. In return it may temporarily dim the wallbox to a floor of 4.2 kW in a congestion case. Ordinary household electricity is not affected.
Connection contribution and house connection
A construction cost contribution (Baukostenzuschuss) under NAV § 11(3) may be charged in low voltage only for the part of the requested capacity that exceeds 30 kW. The operator must establish whether that threshold is crossed. The Bundesnetzagentur notes that a contribution can be due even if no building work is needed on the connection – it pays for the lasting provision of capacity.
A house-connection upgrade or load management may be necessary. Those costs usually fall on the connection customer. The NAV does not publish euro amounts for your site; ask the operator and the electrician.
Private wallbox: not the Bundesnetzagentur, not the MaStR
The Bundesnetzagentur is explicit:
- Private charging points need not be notified to the Bundesnetzagentur.
- Only publicly accessible normal and fast charging points must be notified under the Charging Station Ordinance.
- Charging stations and charging points need not be registered in the Marktstammdatenregister. Consumption units belong there only if they are connected at high or extra-high voltage – that is not the usual house wallbox case.
Searches for “register a wallbox with the Bundesnetzagentur” almost always mean the grid-operator notification under NAV § 19.
Mobile chargers and household sockets
The Bundesnetzagentur also treats connecting an EV to a single- or three-phase socket as notifiable if the reserved capacity rises or grid feedback is expected. Mobile chargers up to 11 kW must be notified before first use in the customer installation; above 11 kW they need consent. A fresh notification is not required if the same or a lower rating has already been notified or approved in that installation.
Household sockets are unsuitable for regular charging for safety reasons, the Bundesnetzagentur says. That does not remove the notification duty.
Practical order
- Have an electrician check the customer installation (connection rating, meter cabinet, cable route).
- Inform the grid operator before commissioning; above 12 kVA wait for consent.
- For a wallbox above 4.2 kW commissioned from 2024: choose the control method and conclude the § 14a agreement.
- Installation by a listed contractor.
- Keep the confirmation and documents.
What this tip is not
This tip does not replace the Wallbox topic. Costs, hardware choice and the federal scheme for multi-occupancy buildings stay there. The WEG/landlord grant is in Wallbox funding 2026: federal scheme. For a single-family house there has been no federal grant since 2024; see Wallbox funding for single-family houses.