Solar Battery Buyers Checklist | What You Need To Know

 

Because batteries are a huge investment with a long payback period you’ll want to do your research and carefully consider the best option for you.

We have developed some solar battery checklist items you should review before purchasing your solar battery.Solar Battery Checklist

1. Is Your Installer CEC Accredited?

Before taking the plunge and buying a solar battery ensure the solar installer you are going with is CEC accredited.

CEC or Clean Energy Council Accreditation means the installer has signed the Solar Retailer Code of Conduct- pledging to good practices.

2. Does The Battery Cover Your Daily Energy Use?

Before you select your battery size ensure that it is big enough to cover your daily energy usage. Generally, your installer will be able to help you calculate this one however, the general rule is:

Your Daily Energy Consumption

Solar System Size

3kW

5kW

7kW

10kW

5-10kWh

4kWh

4kWh

4kWh

4kWh

11-15kWh

7kWh

9kWh

8kWh

8kWh

16-20kWh

6kWh

13kWh

12kWh

11kWh

21-25kWh

5kWh

12kWh

16kWh

15kWh

3. Review Your Battery Warranty

Solar Battery ChecklistBefore signing off on your solar battery deal be sure to review the warranty. Check that you are covered for:

  • At least 5 years.
  • From the date of the installation NOT the date of the manufacturing.
  • Installation warranty.

Ensure that all additional promises or guarantees are put into writing so that it holds validity.

4. Can I Add More Solar Battery Storage In The Future?

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Before selecting your battery type, ensure that you are able to add additional battery storage at a later date. If you are looking to retrofit to an existing system usually this can only be done by your original solar installer.

There are two ways of installing batteries to an existing solar system:

  • Replace the existing inverter with a hybrid inverter.
  • Install an additional inverter to handle the batteries separately.

Speak to your installer about the most economically efficient option for your property.

5. Get A Written Quote

One of the most important items on the solar battery checklist is to compare battery quotes. By comparing quotes from multiple, experienced CEC accredited installers in your area you can ensure you are getting a system that is tailored to your needs and property, not what the installer wants to sell. 

Ready To Install A Solar Battery?

There are some great government rebates and incentives when it comes to solar battery- especially for those of you who are in SA!

If you’re ready for a solar battery install, Solar Market connects you with 3 complimentary solar quotes from CEC accredited installers within your local area.

These installers can take you step-by-step through the battery installation process and can recommend a government grant or two along the way as well.

Request 3 Complimentary Solar Quotes

 

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Understanding Batteries

Off-Grid Systems

For some households a battery system can be of great benefit and minimise a home’s reliance on the grid. However, it’s important to understand for a battery to be useful your solar system needs to be generating excess energy for the battery to store, which you can then use at night or when the sun is not out.

When selecting a battery, you’ll want to invest in a system that is most suited to your home and can drive the best return on investment (ROI). Despite a larger upfront cost, a higher quality battery may significantly increase your ROI.

    Battery systems start from $6,000 and costs can vary greatly based on the following factors:

  1. Cycle Life-Time

    The number of times a battery can fully charge and discharge.

  2. Battery Power (kW)

    How fast it can be charged or discharged.

  3. Storage Capacity (kWh)

    The maximum amount of energy a battery system can store.

  4. Battery Management System (BMS)

    An electronic ‘smart’ system that gathers data and manages the battery ensuring it does not overload or operate outside of its safe functioning zone..

  5. Inverter

    Battery systems require their own inverter if your solar system does not have a hybrid inverter.

  6. 'All-In-One Unit’

    A system which includes the battery, BMS and an inverter all in one unit.

  7. Warranty

    Length of time or cycles the battery system is under guarantee.

  8. Blackout Protection/Backup

    It’s important to note this is not a common feature of a battery system and could cost thousands of dollars to include. Blackout protection not only requires additional components but also a specialised installation and rewiring. For grid-connected homes, the cost for blackout protection can outweigh the benefit.

Additionally, if your purpose for adding battery is to go Off-Grid and become completely independent from the grid you will need to ensure your solar system can generate enough energy to power your home and your battery system is large enough to store this energy. For homes in metro areas going Off-grid is not cost effective and is only recommended for those in remote areas with limited access to the grid. Off-grid solar systems with battery start at approximately $30,000.
 

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