In california where the average system required is 4 23 kw solarreviews research data shows that the average solar panel installation cost as of jan 2020 is 2 78 per watt meaning the 4 23 kw system would be 11 753 before the solar tax credit and 8 701 after the federal tax credit.
													
																	Cost per watt solar panels installed. 
									
	
		
	
																	Residential solar panels cost 2 53 to 3 15 per watt with most homeowners spending 2 70 per watt on average before any tax credits or incentives. 
																	A typical 6kw system costs 11 544 after claiming the 26 solar tax credit. 
																	Kilowatts shouldn t be confused with kilowatt hours which is the metric to show you how much electricity your system produces. 
																	Solar panel costs for an average sized installation in the u s. 
															
													
									
	
		
	
																	Solar panel cost data 2020. 
																	With labor and other factors solar panel installation costs a total of 2 50 to 3 50 per watt. 
																	The average cost of installed residential solar power systems is currently 2 60 per watt. 
																	Commercial solar costs 1 83 per watt on average. 
															
													
									
	
		
	
																	Solar energy cost per kwh. 
																	Solar panel cost per watt example three dollars per watt 3 w means that for a 5 kilowatt system a common solar system size the gross system cost will be 15 000. 
																	There are three types common in the residential market.