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Solar battery installed against a wall

Solar battery guide

Solar batteries store excess energy generated from solar panels. This can be used at night to power your home, avoid being reliant on the grid & save money.

By Carly Nichols

23 November 2020

What is a solar battery? 

A solar battery stores excess energy generated from solar panels, this excess energy can be used at night to power appliances.  

Kevin, a Brighte customer installed batteries with his solar system, "being able to store energy during the day, and use it at night means you are not at the mercy of your electricity provider"

What are the benefits of having a solar battery? 

By having a solar battery, you are less reliant on the grid network, creating smaller energy bills as you utilise energy generated from your solar system first.

What is the difference between a hybrid system vs off-grid? 

A hybrid system remains connected to the main electricity grid. A Hybrid system is able to utilise energy from the main electricity grid once the power generated from the solar system has been depleted. 

Off-grid system or a stand alone system, has no connection to the main electricity grid. All of the homes power comes from their solar system and battery, off-grid systems are larger than hybrid systems as the requirements are greater. 

As a backup, some off-grid systems have a generator that can be utilised if there is a greater demand for power.

Battery information: 

Talk to your solar installer about the below factors, to help decide which battery would best suit your household needs.

  • Rated Apparent AC Power (kVA)
  • Nominal Battery Capacity (kWh)
  • Depth of discharge
  • Usable Capacity (kWh)
  • Min Operating temp
  • Max operating temp
  • Outdoor usage

The three most common battery types are; Lithium-ion, lead-acid, and flow battery.

How long does a solar battery last?

The length of time your solar batteries last, depends on a myriad of factors, speak to your installer about your home. Brighte Tip: Check your warranty.

How would I dispose of a solar battery?

When the times comes to replace your battery, choose a responsible company to come and collect the battery, see more information here. We have also created a guide on the life and disposal of a battery. 

Are batteries safe? 

A very popular question is to ask about the safety of solar batteries. The Clean Energy Council has provided great resources which cover the considerations of owning a battery and important safety information please see battery safety.

The information provided in this article is general in nature and does not constitute advice. Please consider your own personal circumstances prior to making any decisions