The average solar payback period in the US is 6–12 years, with 25-year ROI often exceeding 200%.
A typical 8kW system costs $24,000 before the 30% federal ITC, bringing it to $16,800.
With average sun hours and $0.15/kWh rates, annual savings are ~$1,400–1,800/year.
In most US states, yes. With the 30% federal tax credit and rising electricity prices, solar typically returns 100–300% over 25 years.