Observed arrival · 2026-11-07
BalconSun’s balcony-solar calculator
A Spanish-language guide and calculator for comparing balcony solar kits, estimating their output, and checking regulations across five countries.
- For
- Apartment residents weighing plug-in balcony solar
- Worth noticing
- Its example estimates 1,288 kWh/year for a south-facing, tilted Madrid kit versus 606 for a vertical Berlin setup.
Field notes
The calculator asks for a city, balcony orientation, kit power, and electricity price, then presents estimated annual production, savings, and payback. Its examples contrast 1,288 kWh/year for an 800 Wp kit tilted toward the south in Madrid with 606 kWh/year for the same kit mounted vertically in Berlin. Product listings include specifications and affiliate links; the page says those links do not change its ordering. For Spain, it flags that none of the listed kits indicates a UNE 217001-certified anti-export system.
Observed signals
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Editorial observations of this landing page, not a rating.
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