How to Install Balcony Solar Panels

A complete step-by-step guide to plug-in solar for your balcony, patio, or apartment

Estimated time: ~2 hours · Cost: $300–$2,000

What You Need Before Starting

  • ✓A balcony, patio, or exterior wall with reasonable sun exposure (ideally south-facing)
  • ✓A standard 120V outdoor-rated outlet (GFCI-protected preferred) within cable reach
  • ✓A UL 3700-certified plug-in solar kit (800W to 1,200W) with microinverter and mounting hardware included
  • ✓Basic hand tools (screwdriver, wrench) for mounting — no electrician needed

8 Steps to Install Plug-In Solar

1

Check Your State's Plug-In Solar Legislation

Before purchasing anything, verify whether your state has enacted or introduced plug-in solar legislation. As of 2026, Utah and Maine have signed plug-in solar into law, and Virginia and Colorado have passed legislation through their legislatures. Over 28 states have introduced bills. Check our legislation tracker to see your state's current status.

Check your state's status
2

Assess Your Sun Exposure and Orientation

Evaluate your balcony, patio, or wall for solar potential. South-facing locations receive the most direct sunlight in the Northern Hemisphere, but east- and west-facing setups still produce meaningful energy. Check for shading from trees, neighboring buildings, or overhangs during peak sun hours (10 AM to 3 PM). Even partial shading can significantly reduce output.

3

Calculate Your Expected Savings

Use our free balcony solar calculator to estimate your payback period and annual savings. Enter your state, utility rate, system size, and tilt angle to get an instant estimate based on NREL PVWatts solar irradiance data. No signup required.

Run the free calculator
4

Choose a UL 3700-Certified Panel Kit (800W–1,200W)

Select a plug-in solar kit that carries UL 3700 certification. This standard ensures your system includes anti-islanding protection, which automatically shuts panels down during power outages to protect utility workers. Most kits range from 800W to 1,200W and include panels, a microinverter, mounting hardware, and a plug-ready cable.

Learn about UL 3700
5

Mount Panels on Your Railing, Patio, or Wall

Follow the manufacturer's instructions to mount your panels. Common options include balcony railing brackets, ground-mount frames for patios, and wall-mount kits. No drilling into structural elements is typically required. Ensure panels are angled to maximize sun exposure — a 30° tilt is a good starting point for most U.S. latitudes.

6

Plug Into a Standard 120V Outdoor-Rated Outlet

Connect the microinverter's output cable to a standard 120V outlet. Use an outdoor-rated, GFCI-protected outlet if your panels are outside. The microinverter converts DC power from the panels into AC power that feeds directly into your home's electrical circuit. No electrical panel modifications are needed.

7

Monitor Production and Verify Lower Meter Usage

Most plug-in solar kits include a monitoring app or built-in display to track energy production in real time. After a few sunny days, compare your electricity meter readings or utility bill to confirm your usage has decreased. You can also use NREL's PVWatts tool to benchmark expected output for your location.

NREL PVWatts Calculator
8

Notify Your Utility If Required

Some states require a simple notification to your utility company after installing a plug-in solar system. This is not an approval process — in states with enacted legislation, utilities cannot deny your system. Check the Solar Rights Alliance for the latest on notification requirements in your state.

Solar Rights Alliance

Safety and UL 3700 Certification

Only use UL 3700-certified equipment. This certification is required by all current plug-in solar legislation and ensures your system meets critical safety standards:

  • Anti-islanding protection— panels automatically shut down during grid outages to protect utility line workers
  • Ground fault protection— prevents electrical shock hazards
  • Overcurrent protection— prevents overloading your home circuit
  • Weatherproofing standards— ensures safe outdoor operation in rain, snow, and extreme temperatures

Never use non-certified panels or modify your electrical panel. If your outlet is not GFCI-protected or you have concerns about your wiring, consult a licensed electrician before installation.

Ready to See Your Savings?

Run the free calculator to estimate your payback period, annual savings, and 20-year return based on your location and utility rate.

Open the Solar Calculator