What Size Solar Panel System Does My Home Need?

One of the challenges of deciding to install a Solar Panel System onto your home is deciding what size system is going to be the most suitable. There are some easy steps you can take however that can assist you in

determining your home’s energy needs and what size system will be the best fit.

1. How much electricity does your home consume on a daily basis?

This is one of the key variables in determining what size system is going to be the best option for your home. To figure out how much electricity is used in your home on a daily basis, look at your last electricity bill- bills commonly feature a graph displaying your home’s energy use patterns for that billing period, including a daily usage amount. On average, an Australian home consumes 18 kWh per day, totalling 6570 kWh per year.

2. How much electricity does your home consume during daylight hours?
This part is important to calculate in the event that you are not installing a storage battery as part of your Solar panel system. Without a battery installed, your solar panels will only provide your home with electricity during daylight hours (you will need to use grid electricity during the night). Taking this into account, you will need to figure out a rough estimate of how much electricity your home would consume throughout daylight hours- with this figure you can decide on what size system is going to best meet your needs.

3. Will you install a storage battery?
The decision to install a battery with your Solar Panel system can significantly change the size of the system that is going to best meet your needs. Without a battery, the energy produced by your Solar Panels is used on an on-demand capacity. With the addition of a battery, any excess energy that has not been used during the day can be stored for later use.

On average, an Australian home consumes 18 kWh per day, totalling 6570 kWh per year. Using this figure as a guide, the installation of a 2 kWh Solar Panel system without a storage battery would work sufficiently to meet the average home’s energy needs during daylight hours. In the event a storage battery was also installed, a larger Solar Panel system could be installed for the purpose of generating a larger quantity of energy that could then be stored in the battery for later use (such as during night time hours). The decision regarding what size system you will install ultimately does come down to your individual energy needs, your budget and, your solar energy goals. For more information on what size system will best meet your needs, contact us today for a chat with one of our Solar Advisors.

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