§14a EnWG and Your Home Charger 2026: Grid-Fee Discount, Dimming to 4.2 kW and What It Means for Public Charging
📅 Published on October 17, 2026
Information as of 17 October 2026. The core facts come from the German Federal Network Agency (Bundesnetzagentur) page “§ 14a EnWG – Integration of controllable consumption devices” (no update date shown; the flat amounts are marked “as of 2023”) and its ruling BK6-22-300 of 27 November 2023; additional details come from two guide pages (as of July and August 2026). Grid fees differ by network area – your grid operator’s price sheet is what counts. This article is not legal or tax advice.
If you put a home charger of more than 4.2 kilowatts into operation in 2024 or later, you have probably met the label “§14a”: in the installation record, in the grid operator’s registration form, or as a separate line on your annual bill. The rule is a trade: the grid operator may limit your charger’s power in exceptional situations, and in return you pay a lower grid fee. This article explains what exactly is regulated, which of the three discount modules suits whom, what “dimming to 4.2 kW” means in practice, and why the rule plays no role at public charging stations.
Elunio is an app for public charging stations, so home charging is not our core topic. Still, the price you pay at home is the yardstick for every public charge. How the two compare is covered in Home vs. Public Charging; installing a charger is covered in the home charger guide.
What §14a EnWG regulates
Section 14a of the German Energy Industry Act (EnWG) concerns “controllable consumption devices”. According to the Bundesnetzagentur these are devices with a grid connection power above 4.2 kW – private home chargers, heat pumps (including heating elements), air conditioners and battery storage (with respect to their grid draw) are named. Similar small devices, for example several heat pumps, are added together when checking the 4.2 kW threshold. The key date is 1 January 2024: since then, newly commissioned controllable devices must accept dimming.
Important for anyone who charges on the road: the Bundesnetzagentur explicitly excludes publicly accessible charge points. The rule therefore concerns private chargers, not the station at the supermarket or on the motorway. If a public station charges more slowly than advertised, that comes from what the vehicle, the station and the local grid connection can deliver – not from §14a (see charging station specifications).
The trade: dimming for a grid-fee discount
The control only concerns power drawn from the grid; self-consumption from solar panels and battery storage remains unaffected according to a guide page (basic-solar.de, last modified 6 August 2026). The grid operator may only limit power when overload of the local grid threatens; a complete shutdown is not foreseen. The Bundesnetzagentur puts it this way: under grid-operator control, at most 4.2 kW may be drawn from the grid – this minimum power must always be available. With direct control this applies per device; with control through an energy management system (EMS), an overall limit is determined using a simultaneity factor.
What does that mean for charging? A small calculation from these figures: 4.2 kW × 4 hours = 16.8 kWh; 4.2 kW × 10 hours = 42 kWh. Even if your grid operator dimms, a night usually still delivers enough energy for a typical day’s driving – provided the dimming does not last all night. The guide page energiemarie.de (as of July 2026) adds that household circuits such as lighting, the stove or the washing machine are excluded from control.
For perspective: an 11 kW home charger charges at up to 11 kW without intervention (see kW, kWh and amps explained). When dimmed to 4.2 kW, the same energy takes about two and a half times as long – 11 ÷ 4.2 ≈ 2.6. For most home-charging scenarios (car parked overnight) that is harmless; if you only have two hours in the evening and must be full, you will notice.
The three modules at a glance
If you accept dimming, you get a reduced grid fee. There are three modules; the Bundesnetzagentur gives these key facts:
| Module | How it works | Requirement | Note |
|---|---|---|---|
| Module 1 (flat rate) | Flat reduction of €110 to €190 per year, depending on network area (as of 2023) | No separate meter needed | Applied if you choose no module |
| Module 2 (percentage) | Energy-based part of the grid fee reduced to 40 % | Separate meter without a grid-fee base charge | Cannot be combined with Module 3 |
| Module 3 (time-variable) | Three price levels (HT, NT, ST) through the day, since April 2025 | Only together with Module 1; per energiemarie.de a smart meter and quarter-hour billing | Time windows per grid operator in the price sheet |
Switching between Module 1 and Module 2 is possible according to the Bundesnetzagentur, but not retroactively. Several controllable devices on the same connection are registered together; the Module 1 flat amount is paid only once per grid connection according to energiemarie.de.
Module 1: the standard case
For most households Module 1 is the simple solution: no extra hardware, and the flat amount runs through the normal bill. The Bundesnetzagentur gives the example of an EV using about 2,500 kWh a year, whose grid fee falls by 50 to 95 percent as a result. For perspective, our own calculation assuming 2,500 kWh of home-charger electricity per year: €110 ÷ 2,500 kWh = 4.4 cents per kWh; €190 ÷ 2,500 kWh = 7.6 cents per kWh. That is how much less grid fee you pay per kWh if you use the flat amount. With lower mileage the per-kWh advantage is mathematically larger, with higher mileage smaller – the flat amount stays the same.
Module 2: rarely the best choice for a home charger
Module 2 lowers the energy-based part of the grid fee but needs its own meter. No grid-fee base charge applies to that meter, but according to energiemarie.de it carries its own base and metering charges. If you charge little, Module 1’s flat amount usually works out better; whether Module 2 pays off depends on your annual home-charger consumption, the energy rate in your network area and the meter costs – you will find these in your grid operator’s price sheet and your metering operator’s offer. A blanket recommendation would be a guess, not a fact.
Module 3: time-variable, but only as an add-on
Module 3 adds time-variable grid fees with three price levels to Module 1: high load (HT), low load (NT) and standard (ST). It has been selectable since April 2025. The idea: if you mostly charge in low-load periods, you pay less grid fee. Which hours belong to which level is set by each grid operator. According to energiemarie.de, Module 3 needs a smart metering system. If you already use a dynamic electricity tariff or surplus charging, check whether the price levels fit your charging times – see also solar surplus charging.
Existing installations and the transition
Chargers commissioned before 1 January 2024 are grandfathered. The Bundesnetzagentur distinguishes two cases: if the installation has an agreed control arrangement (for example under an older special tariff), the previous conditions apply until the end of 2028, with the transition from 1 January 2029; an earlier switch is possible by agreement with the grid operator. Without an agreed control arrangement the installation stays permanently exempt, and a voluntary switch is possible. Grandfathering is tied to the installation: if the charger is replaced by a new device, it counts as a new installation. A guide page (basic-solar.de) points out that the voluntary switch cannot be reversed – ask your grid operator before switching.
Registration: what to do
The charger must be registered with the grid operator regardless of §14a, and the requirements of the German market master data register (Marktstammdatenregister) apply as well. This is usually handled by the electrician who installs the charger. The module is chosen at registration or when concluding the supply contract; if you choose nothing, the grid operator bills Module 1 according to the Bundesnetzagentur. Above 12 kVA, energiemarie.de says the grid operator’s prior approval under § 19 NAV is also required. A practical tip: ask for the commissioning record and check whether the grid-fee reduction appears as its own line on your first annual bill.
What this means for costs at home and on the road
Home charging usually remains cheaper than public charging – but the gap depends on your electricity tariff. The grid-fee discount lowers only part of the electricity price, not the energy or tax components. If you want the real cost per 100 kilometres, also factor in charging losses (Charging losses in EVs) and know your alternatives on the road. Charging without any home charger at all is covered in Charging without a driveway.
This is where Elunio comes in – without any claim to completeness: the app shows charge points with prices that other drivers reported on site (community prices) and makes the comparison with your home price easier. Our data is densest in Baden-Württemberg and the DACH region; elsewhere there are fewer reports, and we do not promise gap-free coverage. Why reported prices are often more telling than list prices is explained in Community prices vs. list prices.
Frequently asked questions
Does §14a apply to my home charger?
If it has more than 4.2 kW of grid connection power and was commissioned on or after 1 January 2024: yes. Older chargers are grandfathered; a voluntary switch is possible.
How far may the grid operator dim?
To at most 4.2 kW of grid draw; the Bundesnetzagentur says this minimum power must always be available. A complete shutdown is not foreseen.
How much do I save?
With Module 1, according to the Bundesnetzagentur, a flat amount of €110 to €190 per year (depending on network area, as of 2023). That is a discount on the grid fee, not on the whole electricity price.
Does this affect public charging stations?
No. Publicly accessible charge points are excluded according to the Bundesnetzagentur.
What if I choose no module?
The grid operator bills Module 1.
Conclusion
For home-charger owners commissioned from 2024 on, §14a EnWG is less a restriction than a discount scheme: the 4.2 kW minimum is usually enough for overnight charging, and Module 1 brings a flat €110 to €190 per year with no extra hardware. Modules 2 and 3 only pay off with a suitable meter and charging pattern. Check your grid operator’s price sheet and bill, because the Bundesnetzagentur figures date from 2023.
Sources: Bundesnetzagentur – “§ 14a Energiewirtschaftsgesetz – Integration von steuerbaren Verbrauchseinrichtungen”, bundesnetzagentur.de/DE/Vportal/Energie/SteuerbareVBE/artikel.html (accessed 17 October 2026) · Bundesnetzagentur, Beschlusskammer 6 – ruling BK6-22-300 of 27 November 2023 · energiemarie.de – “§ 14a EnWG: Netzentgelte” (as of July 2026, accessed 17 October 2026) · basic-solar.de – “§ 14a EnWG – was das für deine Wallbox, Wärmepumpe und PV-Anlage bedeutet” (last modified 6 August 2026)