Direct Answer (TL;DR)

Panel size, wattage, inverter type, mounting options – here’s what to consider when buying your first balcony solar system.

Buying your first balcony solar system can feel overwhelming with all the options available. Here’s a practical guide to help you make the right choice.

Panel Size and Wattage

Most balcony solar panels come in two sizes:

  • Standard (around 400 W): About 1.7 m x 1 m. Good output but large. Best for balcony railings with enough space or ground mounting.
  • Compact (around 200-300 W): Smaller footprint, easier to handle. Good for limited space but generates less power.

Inverter Type

The micro-inverter converts DC solar power to AC household power. Key specs to check:

  • Output wattage: Should match or slightly exceed your panel wattage
  • Safety certifications: Look for UL listing (US market requirement)
  • Plug type: Standard NEMA 5-15 outlet plug for US homes

Mounting Options

  • Railing mount: Clamps onto balcony railings. Most popular option.
  • Wall mount: Brackets attach to exterior wall. Good if railing isn’t suitable.
  • Ground stand: Freestanding frame for patios, yards, or flat roofs.
  • Window mount: Smaller panels that attach to window frames. Lower output but very easy.

Budget

Expect to spend $300-$500 for a single-panel system or $500-$800 for a dual-panel system. The micro-inverter is usually included in kits.