Solar panel costs have dropped about 90% since 2010. But what does a typical residential system cost now that the federal credit has ended, and what do state and utility incentives still cover?
Average System Cost Before Incentives
A typical 8kW residential solar system costs $22,000–$32,000 fully installed in 2025. Price varies significantly by:
- Panel brand and efficiency — Premium monocrystalline panels (SunPower, REC, Panasonic) run 15–20% more than standard Tier 1 panels
- Roof complexity — Multiple roof facets, steep pitches, or tile roofs add $1,000–$4,000 in labor
- Inverter type — String inverters ($1,500–$2,500) vs. microinverters ($3,500–$5,500) — microinverters perform better with shading
- Geographic labor market — California and Hawaii installations run 20–30% above the national average
- Battery add-on — A Tesla Powerwall 3 adds $12,000–$15,000 installed
What You Pay Without the Federal Credit
The IRC Section 25D credit, which returned 30% of the installed cost, ended for systems installed after December 31, 2025. On a $28,000 system, a 2026 buyer pays the full $28,000 unless state or utility incentives apply.
For comparison, a 2025 buyer with the 30% credit paid $15,400 on a $22,000 system, $19,600 on a $28,000 system and $24,500 on a $35,000 system.
Payback Period: The Real Number
At the national average electricity rate of $0.16/kWh, an 8kW system producing 10,400 kWh/year saves approximately $1,664/year. At a cost of $28,000 with no federal credit, the simple payback is about 16.8 years, or about 14 years if utility rates keep rising around 2.4% a year.
After payback, the system generates essentially free electricity for its remaining 15–17 year life — a total return of $25,000–$40,000 over 25 years for most homeowners.
How to Get Multiple Quotes and Not Overpay
Solar installer pricing varies by 20–40% for identical systems. The single most important thing you can do is get at least 3 competitive quotes. HomeShark connects you with up to 4 vetted local installers who compete for your project — at no cost to you.