System Comparison
Grid-Tied (Recommended)
Net Metering
Sell excess power back to utility
No Battery Needed
Lower upfront cost
Backup Power
Grid provides power when sun isn't shining
No Power During Outages
System shuts off for safety
Best for: Most homeowners. Better ROI, simpler installation.
Off-Grid
Energy Independence
No reliance on utility grid
Works During Outages
Battery provides backup power
Battery Required
Adds $1,000-$3,000+ cost
Lower ROI
Batteries rarely pay for themselves
Best for: Remote locations, frequent outages, energy independence goals.
Cost Comparison
| Component | Grid-Tied | Off-Grid |
|---|---|---|
| Panels (800W) | $600-$800 | $600-$800 |
| Inverter | $300-$500 | $300-$500 |
| Battery | $0 | $1,000-$3,000 |
| Charge Controller | $0 | $100-$300 |
| Total | $900-$1,300 | $2,000-$4,600 |
Pro Tip
For most balcony systems, grid-tied is the better choice. It's simpler, cheaper, and provides better ROI. Off-grid only makes sense if you need backup power or are in a remote location. Calculate your ROI with our free calculator.