Based on our 2025 survey of 1,000 solar customers, the national average price for a single solar panel professionally installed is $1,200. This means most full-size systems of between 20 and 30 panels cost between $24,000 and $36,000. While that price tag seems steep, the electricity bill savings you get from solar panels make them a worthwhile investment for most Americans. 50 per watt of installed capacity (more on price per watt below). The actual price tag depends on your home's energy needs, roof characteristics, local incentives and other factors, all of which we'll break down in this guide. The. Divide annual kWh by ~1,200 (typical kWh/year per kW of solar in much of California).
