A simple algorithm can be used to determine the size of the solar system and the number of solar panels required. Your monthly electricity use, the number of peak sun hours per day, and the wattage of a solar panel are the numbers you need to enter into the equation.
Let’s assume that you require a solar panel system that generates 2000 kwh per month as a starting point. It’s important to note that a solar system capable of producing 2000 kilowatt-hours per month would be required to meet your energy needs. Even though we offer this amount as an example, if you do use 2000 kwh per month, our recommendation is that you reduce your energy use and stay connected to the grid in case your solar system is unable to meet your needs.
Now you need to figure out how many hours a day your system will be able to generate adequate power for your needs. Only when the sun is directly overhead and shining on the panels do the solar panels generate electricity. No energy is generated at night. There is less energy generation at dawn and dusk because the sun is less active. When the sun is at its peak in your location, your solar panel system can generate enough electricity to power your home for up to six hours a day.
A monthly output of 2000 kilowatt-hours (kwh) necessitates a production rate of 2000/30, or 66.66 kwh/day. The solar system will need to produce 66.66/4 = 16.66 kwh per hour, or 16660 watts, in order to meet your area’s daily peak sun requirements. With today’s solar panels, you can get more or less power depending on the model you choose. Assuming that you want to use 150 watts, you’ll need roughly 112 panels. That’s quite a bit.
It’s important to realize that in order to generate 2000 kilowatt-hours every month, you’ll need an array of 24.8 kilowatt-hours (kilowatt peak). Approximately 100 square feet is required for each kilowatt.
It is a massive system, but it is not necessary to design a system that delivers all of the energy you consume if you want to save money on bills. As long as you’re linked to the utility grid, you can create a system that provides 30 percent, 40 percent, or 50 percent of your energy needs.