How Many Solar Panels Do I Need?
Quick Answer
The average US home needs 20–25 panels (8–10 kW system) to cover 100% of electricity. Divide your monthly kWh by 30, then by your panel wattage and peak sun hours.
Cost Breakdown
| Service | Low | High | Notes |
|---|---|---|---|
| Residential system (6kW) | $12,000 | $18,000 | — |
| Residential system (10kW) | $18,000 | $25,000 | — |
| Federal tax credit (30%) | $-4,000 | $-7,500 | — |
| Battery storage (per unit) | $8,000 | $15,000 | — |
| Annual maintenance | $200 | $500 | — |
How Many Solar Panels Do I Need?
The average US home needs 20–25 panels (8–10 kW system) to cover 100% of electricity. Divide your monthly kWh by 30, then by your panel wattage and peak sun hours.
Related Questions
How do I find a good solar installation professional?
Check reviews, verify licensing and insurance, get 2-3 quotes, and ask for references from recent projects.
Do I need a permit for solar installation?
It depends on the scope. Most cosmetic work doesn't need permits, but structural, electrical, and plumbing changes typically do. Your contractor should know local requirements.
How can I save money on solar installation?
Get multiple quotes, schedule during off-peak seasons, bundle multiple projects, and ask about payment discounts.