Plugin solar in Germany

Yes, you can use a plug-in solar kit in Germany, and it is one of the simplest countries in Europe to do so. Since the Solarpaket I law of May 2024, a plug-in solar device (Steckersolargerät or "Balkonkraftwerk") can have up to 800 W of inverter output and up to 2,000 Wp of solar panels. You set it up yourself: no electrician, no building permit and no form for your grid operator. The only paperwork is a free online registration in the Marktstammdatenregister (MaStR) of the Bundesnetzagentur within one month of switching on. Surplus power flows into the grid without payment. Tenants and flat owners have a legal right to install one, which can only be refused if it is unreasonable.

General overview for Germany

Plugin solar kits: 800 W

Allowed up to 800 VA of inverter output and 2,000 Wp of panels in total, behind your own meter. To use a normal household (Schuko) socket, the complete kit must meet the product standard DIN VDE V 0126-95 and have no more than 960 Wp of panels. From 960 Wp to 2,000 Wp, you need a special energy socket (for example Wieland), fitted by an electrician. Never connect through a multi-plug strip.

Other solar kits

Above 2,000 Wp of panels or 800 VA of output, a kit is no longer a plug-in device. An electrician installs it and registers it with your grid operator, like any rooftop system. Batteries are not yet covered by the plug-in rules. A battery feeding in up to 800 VA needs a simplified notice to your grid operator. Ask your operator which form it uses, because practice varies until March 2027.

Feed-in compensation

Yes, surplus can flow into the grid, but on the simplified route you are not paid for it. Your meter must count both directions. If you still have an old meter, you can start anyway: the metering operator replaces it after you register. Paid feed-in is possible in theory, but it needs a separate registration with your grid operator and leaves the simplified route.

The legal basis for plugin solar in Germany

The main law is the Renewable Energy Sources Act (EEG 2023), as amended by Solarpaket I (Federal Law Gazette 2024 I No. 151, in force since 16 May 2024). It defines a plug-in solar device as having at most 2 kW of panels and 800 VA of inverter output, connected behind a household's own meter. § 8(5a) EEG sets a simplified connection for these devices if you don't claim payment: grid operators may not ask you for any notice.

The technical rules are VDE-AR-N 4105:2026-03 (connection to the low-voltage grid) and DIN VDE V 0126-95 (December 2025), the world's first product standard for plug-in solar. It is a pre-standard and covers kits without batteries only.

Since October 2024, § 554 of the Civil Code (BGB) and § 20 of the Condominium Act (WEG) list plug-in solar as a privileged measure: landlords and owners' associations can only refuse if it would be unreasonable.

A reform, the EEG 2027 (Bundestag document 21/7867), is still in Parliament. The draft keeps plug-in devices exempt from the new 50% feed-in cap and gives them no payment. This page is guidance, not legal advice.

Certification and registration requirements in Germany

Products: the inverter needs a unit certificate (Einheitenzertifikat) under VDE-AR-N 4105. If you plug into a normal Schuko socket, the whole kit should meet DIN VDE V 0126-95. Ask your seller for both documents.

Registration: register the device in the Marktstammdatenregister (MaStR) of the Bundesnetzagentur within one month of switching it on. It is free and online only, and the plug-in form asks for just a few details. The key figure is the inverter output in VA, not the panel power in Wp. The Bundesnetzagentur passes your data to your grid operator, so you don't contact them yourself. Not registering is an administrative offence. A battery must also be registered in the MaStR and needs a notice to the grid operator.

The MaStR helpline is 0228 14-3333. Register at marktstammdatenregister.de.

How to handle your utility in Germany

On the simplified route you don't need to contact your grid operator or your energy supplier.

Check your circuit. Before plugging in, consider having an electrician check that the circuit is sized and protected for it. VDE recommends this, though the law doesn't require it.
Plug in and register. Plug the kit into a suitable socket and register it in the MaStR within one month.
Allow the meter swap if needed. If you have an old meter, the metering operator will contact you to replace it with a modern two-way meter. Give them access when asked.
Find your grid operator if you need them. If you want paid feed-in, or you add a battery, look up your operator at vnbdigital.de and ask for their form.

If you rent, ask your landlord for consent first. In a flat-owner community, ask the owners' association. You may also want to tell your household insurer.

Are there any incentives for plugin solar in Germany?

Since 1 January 2023, panels, inverters, batteries and installation for homes carry 0% VAT (§ 12(3) VAT Act, UStG). The seller applies it directly on the invoice, so there is nothing to claim. There is no national purchase grant and no feed-in payment on the simplified route. Ask your city or local Verbraucherzentrale about local programmes, and a tax adviser for personal tax questions.

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