what does a solar cell system cost
the average solar energy system size in the u s is approximately 5 kilowatts kw based on the average price of $ 3 70 watt a 5kw system would cost $ 13000 after tax credits below are some average 2015 quotes for other solar energy systems by size 6kw solar energy system cost $ 15600 8kw solar energy system cost $ 20700