On average, a 2 kW solar panel system costs $6,360, according to real-world quotes on the EnergySage Marketplace from 2025 data. Why trust EnergySage? As subject matter experts, we provide only objective information. We design every article to provide you with deeply-researched, factual, useful information so that you can make informed. . Most homeowners spend between $12,600 and $33,376 to install a complete residential solar system in 2025, with the national average at $19,873 before incentives. The average cost for purchasing and installing such a system typically ranges from $5,000 to $10,000, depending on factors. . A 2kW solar system can generate 2 kilowatts of power under ideal conditions, typically comprising around 5-8 solar panels depending on the efficiency and wattage of the panels used.
