Guides
Solar system guides: buying advice & know-how
Buying criteria, technology and legal matters around solar systems – explained factually, with matching models and current prices from our comparison.
All guides
- Guide · 7 min readRegistering a balcony power plant in 2026: step by stepSince Germany's Solar Package I, registering a balcony power plant has become much simpler. Find out what applies in 2026, which details you need and what to check before plugging in.Updated 23/09/2026
- Guide · 7 min readIs a balcony power plant worth it? Yield, self-consumption and the mathsWhether a balcony power plant pays off depends on three factors: how much electricity the panels generate, how much of it you use yourself, and what a kilowatt-hour from the grid costs you. Here we work it out with clearly labelled assumptions.Updated 23/09/2026
- Guide · 7 min readInstalling a balcony power plant: how to do it safelyYou can set up most balcony power plants yourself – provided the mount, fixings and connection are right. This guide takes you through planning, installation and commissioning.Updated 23/09/2026
Popular comparisons
- Balcony solar 800 W47 models · from €219Since Germany's Solar Package I (Solarpaket I), 800 watts of feed-in power is the upper limit for plug-in solar devices. Here you'll find plug-and-play kits with a matching inverter – sorted by popularity, with live prices from several shops.
- Balcony solar with battery109 models · from €50With a battery, you can use solar power in the evening and at night instead of exporting it unused to the grid at midday. Compare kits made up of panels, inverter and battery here – with live prices from several shops.
- Balcony solar 2000 Wp15 models · from €373Since Solar Package I, plug-in solar devices in Germany may have up to 2,000 Wp of panel output. Here you'll find kits, usually with four panels – ideal for gardens, garages or east-west installations.
- Solar panels 400–500 Wp13 models · from €84Want to build or expand your balcony power plant yourself? Here you'll find individual panels in the typical 400 to 520 Wp range – without inverter or accessories.
- Bifacial solar panels27 models · from €37Bifacial panels also capture light on their rear side. Compare glass-glass panels for balcony power plants, gardens and motorhomes here – with live prices from several shops.
- Flexible solar panels43 models · from €45Flexible panels weigh only a fraction of classic glass panels and can be fitted to slightly curved surfaces. Here you'll find single panels and multi-packs for balconies, campervans and boats.