What size solar system do I need?” If you are asking this question and are confused about the size of solar system, then this article is definitely going to assist you. Here we will enlist the factors by which you can effortlessly determine the size of the solar system your house needs. So without wasting your time, let's dig into the list of things you need to look for to determine the size of the solar power system. 

How to Estimate the Size of Solar Panels?

An average home requires 20 to 25 solar panels to help you get completely rid of heavy electricity bills. But if you want to estimate the size of a solar power system, then you must start it by calculating the annual energy usage of your living space. 

Calculate annual energy usage

To have an analysis of the annual energy consumption of your home, you need to count the consumption of all the electrical equipment at your home. Make sure you measure the consumption in kilowatt-hours (kWh). Include the Refrigerators, air conditioning units, kitchen appliances, lights, bulbs, chargers, and all other appliances that use electricity. 

Consider your location

The next step is your location, it will help you to get an estimation of sunlight you will get per day. Now that you have calculated the peak sun hours, the next step is to divide the per day energy usage by the number of peak sun hours. The number that comes as an answer is the number of solar panels you need to have. 

Roof factors

You can determine the size by having a look at the characteristics of your home roof. The angle of your roof is very important in determining how much your roof will get sun rays and if your house gets fewer sun rays, you need a larger solar system for your residential property. 

Ways to Calculate the Size of The Solar Power System 

Moving on to another section, now we will discuss the ways by which you can determine the size of the solar system. 

PVWatts

If you're looking for a tool that will easily determine the size of the solar power system your home needs, then you can make use of PVWatts. A powerful tool made by National Renewable Energy Laboratory (NREL), PVWatts will analyse the size based on the location and characteristics of your building. 

Contact a Professional

Another way to calculate the solar system size is by contacting a professional like iGreen Energy. Professionals calculates the size by average utility bill amount and provides you with an estimation of the cost and pricing of the solar power system. 

Wrapping up

So this was all about getting your hands on how you can easily determine the size of the solar power system your house needs. You can use various tools that will help you to have an estimation of the size. If you are still confused about the size of the solar power system, you can try calling for professional help. They will determine the size of the solar power system by using various tactics.