How Do You Know How Many Solar Panels You Need

The number of panels you need for your house depends on factors like location and panel performance.

How do you know how many solar panels you need.

Task 1 go look at your bills summer and winter and see how much you ve been paying. Set a solar power production goal. 450 17 6 25 panels would fit on your roof. 17 42 panels to generate 11 000 kwh year.

Task 2 think about how your future energy needs will change in 10 20 years. You can calculate how many solar panels you need by multiplying your household s hourly energy requirement by the peak sunlight hours for your area and dividing that by a panel s wattage. Here again is your 8 step process for determining how many solar panels you ll need to make the energy you want. Let s say you have 600 square feet of sun facing roof.

Once you know the peak sun hours estimating the number of solar panels needed for 1 000 kwh is simple. The first step is calculating the kilowatts needed. You must simply divide the average daily kwh by the peak sun hours assuming a 30 day month an electricity generation of 1 000 kwh is equivalent to 33 33 kwh per day. Divide the watts you need to produce per hour by the rating of the panels you want to purchase and round up.

Compare solar quotes on the energysage marketplace customized to your property and energy needs. Use a low wattage 150w and high wattage 370w example to establish a range ex. Divide the result by the average square footage of one panel. An average homeowner needs 28 to 34 solar panels to fully offset their electricity bill with solar.

For the example if 500 watt panels were being purchased you would need 3 635 500 8 panels. Now take your 450 square feet and divide by 17 6.