The real answer depends on your electricity use, your roof, your local sunlight, and whether you want to offset some or most of your bill.
What changes the panel count most
- Your average monthly electricity usage
- The wattage and efficiency of the panels offered
- Your roof orientation, shade, and usable roof area
- Whether you also want backup battery support
Questions to ask before trusting a quote
- How much usage is this system expected to offset?
- How much of that estimate depends on best-case assumptions?
- What happens if roof space limits expansion later?
- Is the battery being sized for backup or just added for upsell?