Knowing how many solar panels you would need for your house can depend on many different factors. Usually, the average number of solar panels would be 21-34 to help cover an entire month’s electricity bill. 

For your own home, you may have to do a bit of research and make calculations based on how much space you have or how much energy your household uses. 

If you are unable to come up with your own calculations, solar companies in Florida like us will be happy to help. In this article, we will help you determine how many solar panels you will need for your home and all the factors you’ll have to consider.

Things To Consider

Making Calculations

One of the most important steps in determining how many solar panels you need is to make some calculations. There is a simple formula that you can use to help you figure out the approximate amount you will need. 

This formula consists of dividing your monthly electricity usage by the number of peak sunlight hours per month, then dividing them by solar panel’s wattage use. 

First, you will need to find out how much electricity your home typically uses each month. You can figure this out by checking out your most recent bills where it shows how much total kWh you’ve used that month.

The second thing you will need to figure out is how much sunlight you get where you live. This can be determined by the time of day and how intense the sunlight is for your area. 

The solar panels will work tremendously well during peak sunlight hours. Having many peak sunlight hours means that you will get the most out of your solar panels. If you do have many peak sunlight hours, you may need to invest in bigger solar panels.

Figuring out which size solar panel you will need is determined by how much sunlight you receive where you live. Keep track of how many peak sunlight hours you receive each month, then take that into account when discovering your monthly kWh usage. 

You will multiply your daily sun hours by 30, then divide your kWh usage by those daily sun hours.

For the next part of the formula, you will need to calculate based on converting kilowatts to watts when it comes to figuring out which size the system has to be. 

Then, divide the size of the system by the size of the solar panels you think you will need. The amount of power you will need for your system will determine how many solar panels you need and how big each one will have to be. Keep in mind that getting bigger solar panels may mean you will need less of them.

Sunlight in Your Area

Always pay attention to how much sunlight your area receives. Areas with more sunlight will likely need less solar panels to help you produce electricity for your house. If your area does not receive as much sunlight as regions, then you may want to invest in more solar panels for your home. 


Keep these details in mind when you need to determine the correct number of solar panels you need, especially using the aforementioned formula. If you’re in doubt, feel free to contact us so we can help you determine the most efficient number of solar panels for your home.