September 12 2020 the average cost of installed residential solar power systems is currently 2 60 per watt.
Prices of solar panels increasing.
8 76 kw grid tied solar system with solaredge and 24 astronergy solar 365 watt panels.
Medium 8 16kw system got a 400 price increase to 16 400 before incentives large 12 24kw system got a 1 100 price.
Solar panel cost data 2020 updated.
Changes in solar panel cost over time can be explained by swanson s law which states that the price of solar pv modules decreases by about 20 percent for every doubling in global solar capacity.
Here are tesla s new prices for the bigger solar rooftop panel systems.
This is higher than the average price of residential solar power systems across the united states which is currently 2 60 per watt.