What are they and how do they work?
What do batteries do?
Why Install a Solar Battery?
Less dependent on the grid
Reduce TIME-OF-USE TARIFF costs
Battery Storage FAQs
Can I add batteries to my existing solar system?
Yes, you can! Although, there are a lot of factors to consider. Firstly need to have enough panels to produce extra power to charge the batteries, or enough space on the roof to add additional panels. You also need permission from Ergon/Energex and a suitable location for the batteries to be installed. There are ‘all-in-one’ solutions available, such as the SonnenBatterie and Tesla PowerWall, that have the battery as well as the inverter/charger/controller in one enclosure. There are a lot of details to get right when designing hybrid solar power systems. It isn’t as easy as grabbing any cheap batteries off eBay and hooking them up. If you are considering batteries, give us a call. We are more than happy to go through the options for batteries with you.
What does 'grid-connected' mean?
Grid-connected means that the solar power system is connected to the electricity grid (the Ergon/Energex network) that currently supplies you with power. At night time and in periods of inclement weather, you will be buying power from your electricity supplier if your solar power system is not producing enough power to meet your consumption.
What's the difference between 'hybrid' and 'off-grid' systems?
Both hybrid and off-grid/standalone systems contain solar and batteries, however hybrid solar systems are connected to the grid (Ergon, Energex etc). In off-grid/standalone systems, they are not connected to the grid and use a generator as a backup electricity supply instead.
Can all batteries supply power in a black–out?
This one is a common misconception. Not all batteries have the ability to supply power in a blackout.
Things to look out for
Not all batteries can provide power in a black – out. If that is something that is important to you, it is imperative to make that known to your designer from the outset. Know that there is a difference between the ‘nominal capacity’ and ‘usable capacity’ o f a battery. Most batteries keep some energy in a kind of ‘reserve’ to avoid being damaged. The usable capacity is the number that matters and is typically around 90% Of the nominal capacity. Be aware that every battery has a limit to the amount of power it can output at any one time. So, if you plan to use your air-con, oven, microwave, clothes drier (for example) at the same time, your battery will not keep up and you will be buying the excess from the grid. Staggering high usage items will result in the more efficient use of your batteries. Having a battery doesn’t mean you are off – grid. The vast majority of solar and battery systems will maintain a grid connection to give you the power you need to get through the bad weather days or periods of increased consumption . For off – grid systems – think remote locations where getting power to the block is not possible, practical or economically viable.