Solar panels for an apartment: is it viable, and how many?

Many people think apartment living blocks solar. False. Three viable paths exist in 2026: balcony solar plug-and-play, private rooftop or terrace install, and community/shared solar. Here's each.

Option 1: balcony solar (plug-and-play)

The fastest-growing option. Buy a kit of 1-2 panels with built-in microinverter (300-800 W total) and literally plug it into a wall outlet. Legalized up to 800 W in Germany, Netherlands, Spain and most of the EU. Generates 400-1,000 kWh/year, saves $90-220. Cost: $450-1,000.

Option 2: private rooftop or terrace

If your apartment has a private terrace or roof access, you can install 2-4 × 410 W panels (≈ 1.2-1.6 kW). Covers 30-50% of your consumption. You'll need HOA notification but rarely full approval if it's your property. Cost: $1,700-3,200.

Option 3: community/shared solar

The building installs panels on the common roof and splits production among participating apartments. You save 30-50% on the bill without installing anything yourself. Requires HOA vote and a share coefficient. The future of urban solar.

Typical apartment consumption

• 650-850 sq ft (2 people): 4-7 kWh/day
• 1,000-1,200 sq ft (family): 6-10 kWh/day
• With AC: +2-4 kWh/day seasonal

To dive into the balcony option, read balcony solar step-by-step. If the HOA is debating it, see permits to install solar panels.