Everything You Need to Know About Battery Storage

Everything You Need to Know About Battery Storage

Why and how does battery storage for your solar power work?

Over the years, we have seen a rise in usage of solar systems both in residential and industrial structures. Solar panels allow homeowners to take advantage of and utilise the unlimited energy coming from our sun.

Solar power is a sustainable form of energy. It lets you save on your electricity bills by making you less dependent on the power supplied by the grid.

Consequently, the rise of the use of solar energy has given way to another solar technology: solar batteries. Solar batteries essentially store the extra solar power collected by your solar panels for use later.

How does a typical solar power system work

How does a typical solar power system work?

A typical solar power system is made up of your solar panels, your inverter, solar panel mounts, and a monitoring system to track the performance of your solar power system.

The solar panels, which are mounted on the roof for maximum sun exposure, collect energy from the sun and convert them to electricity. This is then passed through an inverter that converts the harnessed electricity into a usable form that is safe for your electrical fixtures and appliances at home.

Most homes with solar power systems are also connected to the grid. During the times when your solar system produces more electricity than your household needs, the excess electricity is supplied back to the grid.

If your solar power system isn’t producing enough electricity you’re your needs, the grid will supply you with the deficit energy. Your electricity provider will give you credits for the electricity that you feed back to the grid. This process is known as net metering, where you can use the credits that you have earned for those times when you need more electricity from the grid.

As mentioned, another option for this excess electricity is to store it, and that is when a battery is required.

What is Solar Power Battery Storage

What is Solar Power Battery Storage?

Solar power battery storage allows you to be off-grid and be more self-sufficient. Solar batteries store the excess energy your solar power system generates for future use instead of feeding it back to the grid.

At night, when your solar panels cannot produce electricity because of the absence of the sun, you can use this stored energy to power your home. When your battery is full during the day, your solar power system will feed back the excess energy to the grid. In case of blackouts, you have a reliable backup supply to power up your home.

How to Choose the Best Solar Battery Storage

How to Choose the Best Solar Battery Storage?

Before you purchase a solar power battery storage, you must first check its specifications. Not all solar battery storages are created equal, so do your research first or seek the help of a professional such as Sunface Solar.

Here are the important specifications that you should look at when buying a battery storage for your solar power system.

Power and capacity

The power rating of your solar power battery storage tells you how much electricity your battery can supply at a specific instant. Power ratings refers to the amount of electricity your battery storage can give you at a time, and it is measured in kW (kilowatts).

Capacity refers to how much electricity your solar power battery can store. Capacity is measured in kilowatt-hours (kWh). Some solar batteries are designed to allow you to use multiple battery storages to increase your solar system’s capacity. The larger your capacity, the longer your home can run without needing to get power from the grid.

There are two types of capacity that you will see: nominal capacity and usable capacity. Nominal capacity refers to the total amount of energy that a solar battery storage can store. Usable capacity, on the other hand, refers to the amount of energy that you can actually use.

Depth of Discharge (DoD)

Most types of batteries require to have some amount of charge left. Using 100% of the battery’s capacity can lead to the degradation of the battery, which can shorten its life.

DoD refers to the amount of energy that you can safely use, without damaging your solar power batteries. For example, you can safely use up to 90% of a Lithium battery’s nominal capacity. Flow batteries, on the other hand, allow you to consume 100% of its nominal capacity.


A battery’s efficiency refers to how much it will store for every kWh of solar energy that is supplied to it. A higher efficiency will be more economic for you. Lithium batteries are almost always at least 90% efficient.


Referring to the expected life that your battery will be usable, lifespan is rated in cycles or years. As the years go by, the efficiency of a battery lessens. The lifespan specification should also include the battery’s expected efficiency at its end of life.

Most solar batteries can last up to ten years, as long as they are not subjected to extreme temperatures.

Temperature Range

Batteries can operate efficiently at a given range of temperatures. Your batteries can get damaged when it gets too hot or too cold.

What are the Types of Solar Power Batteries?

You can choose from the following types of solar power batteries:

  • Lithium-Ion Battery
  • Lead Acid Battery
  • Flow Battery

Of course, the solar power industry is rapidly progressing. There are other types of solar battery storage that you can choose from, depending on the brand and supplier.

Are Solar Batteries Worth It

Are Solar Batteries Worth It?

The Australian government offers rebate schemes and financial incentives that can make solar power battery storage a worthy investment. There are also programs available in some states or territories that can help make solar power battery storage more affordable, such as the Virtual Power Plant program. The program allows the VPP operator to supply the stored energy in your home solar power battery to the grid when demand is high. Of course, you will be paid a subsidy for the energy that you supply back to the grid.

Contact Sunface Solar for your Solar Power Needs.

Contact Sunface Solar for your Solar Power Needs.

Sunface Solar is your trusted partner for your solar power system needs in Australia. We offer a complete range of solar power products at competitive prices so that you can have your own sustainable form of energy supply in your home. From consultation, design, to the installation of your solar panels, Sunface Solar is here to assist you.


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