Balcony Solar System
Small plug-in solar device (up to 800 W) mounted on a balcony or facade that feeds electricity directly into the home grid.
Also known as: Plug-in Solar Device, Mini PV System, Plug-in Solar System
What Is a Balcony Solar System?
A balcony solar system is a small photovoltaic system consisting of one to two solar modules and a microinverter. It is mounted on a balcony railing, facade, or in a garden and feeds the generated electricity directly into the home grid via a socket.
Technical Specifications
| Property | Value |
|---|---|
| Maximum inverter power | 800 W (since 2024) |
| Module power | 1—4 modules at 400—500 Wp each |
| Annual yield | approx. 600—900 kWh |
| Weight per module | approx. 20—25 kg |
| Connection | Schuko plug or Wieland plug |
Legal Framework (since 2024)
- No approval from the grid operator required
- Simplified registration in the Market Master Data Register
- Backward-running meter temporarily permitted
- 800 W feed-in limit at the inverter (VDE-AR-N 4105:2026-03)
- Schuko plug standard-compliant since DIN VDE V 0126-95 (Dec. 2025)
- Privileged status as a structural modification under condominium law
Economics
A balcony solar system costs approximately EUR 200—650 and saves about EUR 245 per year with an annual yield of 700 kWh and an electricity price of 35 ct/kWh. The payback period is just 1—3 years.
Practical Tip
For tenants, a balcony solar system is often the only way to generate their own solar electricity. Ensure south-facing orientation and minimise shading. Since 2024, up to 800 W can be commissioned without an electrician. Since March 2026 (VDE-AR-N 4105:2026-03), there is no rigid module power cap when using a Wieland connection.
Related Terms
Microinverter
Small inverter mounted directly on a single solar module, converting DC to AC on a per-module basis.
Photovoltaics
Technology for the direct conversion of sunlight into electrical power using solar cells made from semiconductor material.
Market Master Data Register
Official register of the Federal Network Agency where all electricity generating systems in Germany must be registered.
Self-Consumption
Share of self-generated solar electricity consumed directly in the household rather than fed into the grid.