How Much Does a Solar System Usually Cost?

The average solar energy system size in the U.S is approximately 5 kilowatts (kW). Based on the average price of $3.57/watt, a 5kW system would cost $12,500 after tax credits. Below are some average 2015 quotes for other solar energy systems by size:

  • 6kW solar energy system cost: $15,000
  • 8kW solar energy system cost: $20,000
  • 10kW solar energy system cost: $25,000

These prices reflect the cost of a solar energy system after deducting the federal solar tax credit, which reduces your solar system cost by 30 percent. Some states, local governments, and utilities also offer rebates and other tax incentives that can further reduce the solar system costs in your quotes from solar installers.

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