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.
Are solar panels expensive to buy.
Today it s around 0 13 per watt or about 600 times less.
Solar companies can typically get a single solar panel at a price of 0 75 per watt.
But the true cost of solar panels and whether they ll help you save money depends on a few key factors.
Back in 1977 the price of solar photovoltaic cells was 77 for just one watt of power.
On average installation and the system together can run between 15 000 and 25 000.
The price of solar has dropped by an incredible amount.
However if a homeowner is trying to buy one or two panels on their own for a small diy project they will likely pay closer to 1 per watt.
The type of solar panels and inverter you buy there is a significant difference in cost between the top rated solar panels and brands that are perceived to be of lesser quality.
Therefore if the solar panel output is 250 watts that single panel might cost you 187 50.
Buying your solar electric system outright is best.
It usually costs 15 000 to 20 000 after tax credits and can reduce your electricity bill by 70 to 100 percent depending on the size and.