On average, 28 to 32 solar panels are needed to power a home. This will cover 100% of the energy costs of a 2,500 square foot home. The exact number of panels you will need will vary depending on the size of the home, the location of the panels, the geographical locations, and the efficiency of the panel. In this scenario, your solar panel will provide around 50% of your annual energy supply.
For a home that uses 11,000 kWh per year, this is 5,500 kWh. With a modern solar energy system, including energy storage, you can definitely run an entire house completely on solar energy. This table shows how much electricity an average household uses in each region and how many solar panels in that climate are needed to generate that amount of electricity. Since you now know how much 1 kW of solar energy will produce in your area, you can determine the size of the solar system you need to meet your electricity needs.
These tables provide a reference point to help you answer preliminary questions, such as how many panels can fit on your roof and if solar energy fits your budget. Of course, if you are driving during the day, you could also consider installing solar storage in your home to better utilize the energy produced by the solar panel. First of all, you should have your roof evaluated by a specialist to determine if it can support the additional weight of the solar panels. In all cases, the tables shown reflect how many solar panels you would need to fully power an “average American home” based on the data available to us.
If that house has a south-facing roof with no shade during the day, it would need between 17 and 26 premium solar panels to generate that much electricity. Next, take the size of the system in watts and divide it by the wattage of the solar panels you want to install. According to the Association of Solar Energy Industries, the United States has already surpassed a whopping 2 million solar photovoltaic installations. If you have limited ceiling space, you may need high-efficiency panels or panels with a higher power output to be able to install fewer panels while meeting your energy needs.