Solar panel cost data 2020 updated.
Solar panel price by year.
A typical 6kw system costs 11 544 after claiming the 26 solar tax credit.
September 12 2020 the average cost of installed residential solar power systems is currently 2 60 per watt.
Price per watt w allows for an apples to apples comparison of different solar quotes that may vary in total wattage solar panel brands etc.
Solar panel cost the average cost to install solar panels is from 10 626 to 26 460 after tax credit for a 6kw to 12kw system to power an entire house.
Ultimately there are many factors that figure into the price per watt of a solar system but the average cost is typically as low as 2 75 per watt.
Back in 1977 the price of solar photovoltaic cells was 77 for just one watt of power.
The cost has generally been following swanson s law which states that the price of solar drops by 20 for every doubling of shipped product.
The average solar panel payback period is 7 to 12 years and solar energy saves 600 to 2 000 per year on electricity costs.
Decline in price of residential solar since 2000.