Solar Panel Cost Guide 2026: Prices, Savings & ROI (2026)

Solar costs are typically measured per watt installed. The national average is $2.75/watt. A 6kW system averages $16,500 before incentives, while a 10kW system averages $27,500. Smaller systems cost more per watt due to fixed installation overhead.

Key cost factors include system size, panel brand and efficiency, inverter type, roof complexity, local labor rates, and permitting fees. Premium panels from SunPower or REC cost 15-25% more than budget options but offer higher efficiency and longer warranties.

Solar costs vary significantly by state. California averages $2.85/watt, Texas $2.60/watt, Florida $2.70/watt, and New York $3.10/watt. States with established solar markets and competition tend to have lower prices due to installer density.

The 30% federal Investment Tax Credit reduces a $20,000 system to $14,000. Many states offer additional credits, rebates, and SREC income. Combined incentives can reduce total cost by 40-60% depending on your location.

Most solar systems pay for themselves in 5-10 years through electricity savings. Over 25 years, homeowners save $20,000-$60,000 on average. The ROI exceeds most traditional investments, especially in states with high electricity rates.