A balcony solar kit is the smallest possible solar power plant: one or two panels, a micro-inverter, and a cable that plugs into your home's circuit. During the day, it covers part of your base load (fridge, router, standby devices) so you draw less from the grid. Add a battery and you can shift midday sun into the evening. This guide is based on manufacturer specs, public reviews and official or specialist sources on regulations, which change often.
Plug-in / balcony solar rules change often and vary by country, utility and building. Check your grid operator, your landlord or condominium rules, and have the socket and circuit checked by a qualified electrician.
How a balcony kit works
- Panels (typically 2 × 400 to 500 W) on a railing, wall or the balcony floor.
- Micro-inverter converting DC to grid-synchronised AC, capped at the legal feed-in limit (800 W in Germany).
- Connection to a household circuit: in Germany via Schuko under the new product standard, elsewhere often a dedicated socket or circuit.
- Optional battery storing surplus for later. See balcony solar with battery.
Rules by country (check before buying)
Germany
The 2024 Solarpaket I raised the simplified limit to 800 W. The new DIN VDE V 0126-95 product standard, as reported by heise, lets laypeople connect plug-in devices up to 800 W inverter output and 960 W module power via Schuko; beyond that, an electrician is required, and from 2,000 Wp the rules for balcony systems no longer apply. Plug-in devices only need registration in the Marktstammdatenregister. Storage systems are not covered by this standard; the solar industry association BSW says a current sensor must be installed by an electrician and storage needs separate registration with the grid operator.
France
No specific wattage cap applies, but a CACSI declaration to Enedis is required for any size, a Linky meter is needed, and specialist sources report that a 2026 ministerial answer treats connection through an ordinary socket as prohibited under NF C 15-100. The safe route: a dedicated circuit with its own breaker installed by an electrician. Co-ownership rules and town-hall declarations may apply for visible installations.
Other countries
Rules in Italy, Spain, the Netherlands and the UK differ and are evolving. Check your grid operator's current guidance. For the US, see our plug-in solar USA guide.
Sizing a balcony kit
- Orientation: south-facing and unshaded is ideal; east/west splits spread production across the day, which can actually suit self-consumption.
- Base load: if your home draws 150 W at midday, an 800 W inverter will mostly export surplus unless you add storage or shift loads (washing machine, dishwasher) to sunny hours.
- Mounting: railing mounts must handle wind loads; for upper floors, use certified mounting hardware and consider a professional.
Systems to shortlist
| Model | Capacity | Output | Solar in | Voltage | UPS |
|---|---|---|---|---|---|
| Anker SOLIX Solarbank 2 E1600 Pro | 1,600 Wh | 800 W | 2,400 W | 230V (EU) | n/a |
| EcoFlow STREAM Ultra | 1,920 Wh | check | 2,000 W | 230V (EU) | n/a |
| Zendure SolarFlow 800 Pro | 1,920 Wh | 800 W | check | 230V (EU) | n/a |
"check" = not confirmed on the sources we used; verify on the manufacturer page before buying.
Balcony solar with storage (EU)
Anker SOLIX Solarbank 2 E1600 Pro
Best for: Balcony solar with storage (EU)
| Capacity | 1,600 Wh |
|---|---|
| Output | 800 W |
| Solar input | 2,400 W |
| Voltage | 230V (EU) |
| Weight | See spec sheet |
| Cycle life | 6,000+ (manufacturer) |
| Chemistry | LFP |
| MPPT | 4 x 600 W |
| Grid output | 800 W (settable 600/800 W) |
| Emergency socket | 230 V, up to 1,000 W |
| Expansion | Up to 9.6 kWh with BP1600 packs |
Strengths
- 4 MPPT inputs: up to 4 panels facing different directions
- Built-in 1,000 W emergency socket during outages
- Expandable to 9.6 kWh
Watch-outs
- Smart-meter based zero-export needs the optional meter
- EU product (230 V)
Specs: manufacturer / retailer spec sheets (source 1). Prices change daily, so we do not print them.
All-in-one balcony storage (EU)
EcoFlow STREAM Ultra
Best for: All-in-one balcony storage (EU)
| Capacity | 1,920 Wh |
|---|---|
| Solar input | 2,000 W |
| Voltage | 230V (EU) |
| Weight | See spec sheet |
| Cycle life | See spec sheet |
| Chemistry | LFP |
| MPPT | 4 (retailer listing) |
| Max AC output | 2,300 W listed by a retailer (grid feed-in is capped by local rules) |
Strengths
- 1.92 kWh all-in-one unit with 4 MPPT inputs
- Modular STREAM family (extra batteries)
Watch-outs
- Several specs only confirmed via retailers so far
Specs: manufacturer / retailer spec sheets (source 1 · source 2). Prices change daily, so we do not print them.
Outdoor-rated balcony storage (EU)
Zendure SolarFlow 800 Pro
Best for: Outdoor-rated balcony storage (EU)
| Capacity | 1,920 Wh |
|---|---|
| Output | 800 W |
| Voltage | 230V (EU) |
| Weight | See spec sheet |
| Cycle life | See spec sheet |
| Chemistry | LFP |
| MPPT | 4 |
| Protection | IP65 (retailer listing) |
Strengths
- IP65 rating listed: suited to outdoor balcony placement
- 4 MPPT inputs
Watch-outs
- Check solar input and expansion on Zendure's sheet
Specs: manufacturer / retailer spec sheets (source 1). Prices change daily, so we do not print them.
Simple kits without storage (panels + micro-inverter) from many brands are also sold; compare certification for your country (for example NF EN 50549 / VDE-AR-N 4105), the inverter's rated output, and the warranty on panels and inverter.
FAQ
How much power can a balcony solar kit feed in Germany?
Per the new DIN VDE V 0126-95 product standard as reported by heise, laypeople may connect systems with up to 800 W inverter output and up to 960 W of module power via a Schuko plug; larger setups need an electrician. Plug-in devices must be registered in the Marktstammdatenregister.
Do I need to declare a balcony kit in France?
Yes. A free self-consumption declaration (CACSI) to Enedis is required regardless of size, according to French specialist sources. A ministerial answer in 2026 treats connection through an ordinary socket as prohibited, so the unambiguous route is a dedicated circuit installed by an electrician. Check the latest Enedis guidance.
Can I install balcony solar as a tenant or in a condominium?
Often yes, but you may need permission. In France, a panel fixed to the railing or facade of a co-owned building generally requires a general assembly vote, and visible installations may need a town-hall declaration. In Germany, tenants have gained rights to request approval. Always ask first.
How much will a balcony kit save me?
It depends on orientation, shading, your local sun and, above all, how much of the output you use yourself while it is produced. Without a battery, unused surplus is typically fed to the grid unpaid or lost. We do not publish generic savings figures because they would be misleading.