Balcony Solar Rules by Country: UK, Germany, France, Spain (2026)

Published: 2026-07-11 · Updated: 2026-09-29

As of 2026, plug-in balcony solar is allowed in all four major Western European markets, but the conditions differ more than the headlines suggest. Germany allows 800 W with a simple online registration. In Great Britain, a register-listed kit may be plugged into an ordinary socket since 27 August 2026. France requires a declaration to Enedis and has tightened its wiring standard. In Spain the kit still needs an electrical installation certificate. Below is the full country-by-country breakdown, which we review and update monthly.

Quick comparison

United Kingdom

The UK is the newest market. SI 2026/848 has made it legal to plug a compliant kit into an ordinary socket in Great Britain since 27 August 2026, under DESNZ’s Interim Product Specification v2 (published 16 July 2026). BS 7671 Amendment 4 was published on 15 April 2026 and brought plug-in solar into the wiring standard. The previous edition is withdrawn on 15 October 2026, and from then on all new electrical work is done to A4. The framework closely follows Germany’s model: up to 800 VA inverter output, up to 2,000 W of panel capacity, connected through a standard BS 1363 plug with a 5 A fuse.

The compliance test is the part people get wrong: the socket route covers only a complete kit whose exact model code is listed as Compliant on the ENA Connect Direct register under the Type “Plug-in Solar”. A listed inverter or a familiar brand is not enough. There is no DNO pre-approval, but you must notify your DNO under G98 within 28 days of installing. Ofgem approved the amended G98 rules on 11 August 2026, and they allow one plug-in microgenerator per household.

In England, SI 2026/896 makes most plug-in kits permitted development, with no timber balconies, walls or cladding, and no listed buildings. In conservation areas, panels may not go on a wall or balcony that fronts a highway, and an Article 4 direction can remove the rights locally. Northern Ireland is not covered by the socket route yet.

The market filled quickly. On 29 September 2026 the register held 124 Plug-in Solar records, 84 of them Compliant. City Plumbing, Perlight, Worldwide Solar, UKSOL, PatioSun and Zendure lead, and Octopus Energy and EcoFlow are listed too. Before you buy, check the kit on the ENA register or pick one from our list of register-listed kits with checked prices.

Germany

The most mature market, with over a million systems installed. Since the Solarpaket I reforms, the rules are an 800 W AC output cap and up to 2,000 Wp of panels, with registration only in the Marktstammdatenregister (MaStR) within one month. The grid operator cannot object. The grid connection rule VDE-AR-N 4105:2026-03 (published December 2025) confirms that plug-in devices meeting the EEG conditions need only the MaStR entry. DIN VDE V 0126-95 (December 2025) is the first product standard for plug-in solar. It allows an ordinary Schuko plug for up to 960 Wp of modules behind an 800 VA inverter. Up to 2,000 Wp needs a special energy plug, and devices with storage are outside its current scope. Tenants have a legal right to install balcony solar, and landlords can refuse only for substantiated safety reasons. Old meters may temporarily run backwards until exchanged, which is tolerated.

You may see “7,000 W balcony power plants” advertised in 2026. Anything above the plug-in limits no longer counts as a plug-in device in this sense: it has to be registered with the grid operator as well as in MaStR.

France

Plug-in kits are sold legally and are growing fast, with two caveats. First, every installation must be declared to Enedis, whatever its power. For a kit that does not export, the declaration comes with the CACSI (convention d’autoconsommation sans injection) and either a Consuel certificate or a sworn statement. Enedis says ready-assembled plug-and-play kits that conform to NF EN 50549-1-4 may be exempted from Consuel. Second, the revised wiring standard NF C 15-100 (2024) has applied since 1 September 2025, and its coexistence period with the old edition ended on 31 May 2026. It forbids connecting a generator to an ordinary socket outlet in a fixed installation. In May 2026 the government confirmed that a kit that only plugs into a socket is not part of the building’s fixed installation. There is still no official clarification for plug-and-play kits, so treat the ordinary-socket route as a tolerance, not a right. Façade or railing mounting in some municipalities can also require a déclaration préalable at the town hall, which is worth a two-minute check for street-facing balconies.

Spain

Royal Decree 244/2019 made self-consumption much simpler. A no-export (sin excedentes) installation needs no grid access or connection permit. For low-voltage systems under 100 kW, the region enters it in the self-consumption register automatically, using the paperwork filed under the low-voltage regulations (REBT), in practice the electrical installation certificate (CIE) from an authorised installer. There is no 800 W exemption in the decree. The 800 VA figure comes from the wiring rules (ITC-BT-40): a no-export generator above 800 VA must have its own dedicated circuit with a type A residual-current device. Below that it may share a circuit, but that is a wiring rule, not an administrative shortcut. Spain’s high solar yields (up to 40% more output than Germany for the same panel) make it arguably the best-value market in Europe, and adoption is accelerating.

What this means in practice

Plug-in solar is now possible in all four countries, but “plug it in and forget it” is only close to true in Germany. In the UK you need a register-listed kit and a G98 notification. In France you need a declaration, and you should watch the wiring standard. In Spain the kit needs a certificate. Renters and flat owners still need consent in most cases; see our renters’ guide. Check your expected payback with our calculator, then see which kits we currently rate.

Primary sources: SI 2026/848, DESNZ Interim Product Specification v2, SI 2026/896, Ofgem decision of 11 August 2026 and BS 7671:2018+A4:2026 (UK); EEG/Solarpaket I, §554 BGB, VDE-AR-N 4105:2026-03 and DIN VDE V 0126-95 (Germany); Enedis self-consumption declaration, NF C 15-100 (2024) and the government’s answer to written question no. 6574 (JO, 26 May 2026) (France); Real Decreto 244/2019 and ITC-BT-40 of the REBT (Spain). This page is reviewed monthly; the “updated” date above reflects the last review.