How Many Solar Panel Do I Need?
Installing a solar panel can be one of the greatest investments you can ever make, as it will allow you to produce energy that can reduce or even eliminate electricity bills. However, it is important to know that the number of solar panels isn’t the most significant factor when it comes to purchasing a solar panels, rather it is about the capacity of the system. The size of the system varies greatly on the needs of the family, and the electricity usage needed.
Understanding electricity usage
One of the first steps to take when considering installing a solar panel is to determine what size of solar system is required by your home so that it runs on solar power. The best way to determine this is to look at previous electricity bills, which will highlight to you how much power you use.
Checking your account online will also allow you to see how much power you use on daily basis and can give you a monthly average estimation. Based on Electricity statistics Australia on average an Australian household uses around 18-2kWh per day and a single-person home consumes about 8kWh. Lastly, of course, consumptions can vary depending on season time and other factors, the easiest way to find out usage is to contact your power provider or using existing bills.
Determining the size of your solar system
After knowing how much power your household uses on daily basis you can begin the process of selecting the size of your solar system. Most people install a grid-connected system, which allows the solar panel to generate electricity during the day and grid connection when the solar is not generating enough power.
Now such solar panels will roughly generate 1kW of power, which is estimated to be around 4kWh of electricity per day. Or in similar terms a 5kW solar = 20kWh of electricity. However, it is important to note that the amount of electricity generated will depend on the time of year, location, the orientation of solar panel, and the mount sunlight they are getting. So make sure these factors are considered, a solar expert will understand these variables and how they impact your energy goals.
Whats considered the right size?
Solar Panel prices have seen a decrease from the previous years, so speaking with your installer about a larger system may be beneficial. The reason behind considering a larger system e.g. 5-10kW is to achieve an economy of scale (cost advantages).
However, for example, installing a 5kW system is a cost-effective option, yet, you may have to pay for the power on high consumption periods as the power generated by such solar panel may not be enough for your household. Balancing initial investment, future usage and your goals to find a solution right for you.