The price of solar panels has been decreasing as solar panel technology continues to mature and be produced globally. Since 2015, the constant price of solar panels has been reduced by about 40% now. For the price of solar panels per square foot, there are a number of factors that affect this, such as the size of the solar system, your location, and more. When you are ready to install solar panels, we provide you with a price list for solar panels per square foot.
| Living space (square feet) | Power of the solar system that can be installed（w） | Total cost of solar panels（$) | Cost per square foot($) |
| 500 | 8970 | 897 | 1.79 |
| 1000 | 18135 | 1813.5 | 1.8 |
| 1500 | 27300 | 2730 | 1.82 |
| 2000 | 3607.5 | 3607.5 | 1.80 |
| 2500 | 45240 | 4524 | 1.80 |
| 3000 | 54405 | 5440.5 | 1.81 |
| 3500 | 63375 | 6337.5 | 1.82 |
| 4000 | 72345 | 7234.5 | 1.80 |
For a 500ft² house, you can install solar panels with a power of 8970W, and in the solar system, it requires a 1kw inverter, which generally costs $95. If you want to install a grid-tied solar system, the cost of the entire solar system for your 500ft² house is $974. If you want to install an off-grid or hybrid solar system, you also need to install 2kwh of solar battery, which cost $240, so the cost of your solar system is $974. If you want to install an off-grid or hybrid solar system, you will also need to install 2kwh of solar battery, which cost $240, so the cost of your solar system is $1,214.
The total power of the solar panels for a 1000ft² house is 18,135W, in such a system you need a 2kw inverter to convert the DC power to AC power, the cost of this 2kw inverter is $189. If your solar system is a grid-tied solar system, the cost of the solar system for a 1000ft² house is $2002.5. If your solar system is an off-grid or hybrid solar system, the cost of the solar system will be $1,214. If your solar system is off-grid or grid-hybrid, in addition to the 4kwh solar battery you need to install, the cost of your solar system is $2481.9.
For a 2500ft² house, you can install solar panels with a power of 27,300W, and from the power of the solar panels, the power of the inverter is 3kw, which costs $200. So for a grid-tied solar system, the cost is the cost of the solar panels plus the cost of the inverter, which is $4,724. For an off-grid or hybrid solar system, the cost of the solar panels plus the cost of the inverter is $4724. For an off-grid or hybrid solar system, the cost of the solar panels plus the cost of the inverter is $5203, and the cost of the solar batteries is $4kwh.
According to the table above, a 3000ft² house can install solar panels with a power of 54,405W, and for such a solar system, we need to have a 6kw inverter in the first place. For a grid-connected solar system, the cost of this solar system is $6007. For an off-grid or hybrid solar system, we also need to install a set of 10kwh solar battery, which costs $1198, so the cost of the whole solar system is $7205.
For a 3500ft² house the power of solar panels is 63,375W, in this solar system you need to have a 7kw inverter so that you can form a grid-connected solar system, then the cost of this grid-connected solar system is $6999, if you have an off-grid or hybrid solar system you also need to install a set of 15kwh solar battery, then the cost of this off-grid or hybrid solar system is $7205, then the cost of the whole solar system is $7205. If you have an off-grid or hybrid solar system, you will also need to install a 15kwh solar battery, so the cost of this off-grid or hybrid solar system will be $8796.
The solar panels installed on a 4000ft² house have a power of 72,345W, which is relatively large for a home solar system. It requires an inverter of 8kw, so the cost of this home solar system is $7,990 if it is grid-tied. If you install an off-grid or hybrid solar system, you can add a 15kwh solar battery on top of that, and the cost is $9,787.
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