The cost of solar panels in 2025 varies depending on system size, location, and installation complexity. For residential solar panels in the U.S., prices range from about $2.80 to $3.80 per watt. This means a typical 6 kW system costs between $16,800 and $22,800 before incentives. Smaller systems like 5 kW may start around $14,000, while larger 10 kW systems can reach up to $38,000. Prices vary by state; for example, California averages $2.80/watt, Texas $2.95/watt, and New York about $3.60/watt. Most systems come with a 25-year warranty and minimal annual maintenance, with potential savings on electricity bills over time.
In the UK, solar panel system costs are generally lower, with typical 4 kW systems costing between £6,600 and £8,100, with break-even points around 6-7 years and significant savings over 25 years.
