Your amount of panels is determined by the amount of square feet of your home, average utilities, and other actors to take into consideration such as certified installation from a local solar panel installation service. Here is a good solar panel price-checker tool where you can gauge your electricity output fast based on your home size. There are some different efficiency levels such as the difference between monocrystalline, and, polycrystalline silicon solar cells, which change the amount of output, so you could be facing higher costs, with better efficiency, and require less space for your solar panel system.
HahaSmart’s solar panel price checker will give you prices for everything from connecting you to the installer to making the purchases.
Here is an example of a 5.2 kW system in California
- Engineer / Permit:$798
- Panel:19 pcs * $145/pcs = $2,759
- Inverter & Accessory:$1,602
- Racking:$827
- BOS:$738
- Other mis:$0.05/watt * 5,225 watt = $255
- Sales Tax:$6,724 * 8.75% = $588
Prices are an average of 25% below the average market value of rooftop solar panels, in addition to tax incentives.