# Battery Systems - Link: https://www.barrasolarpower.com.au/battery-systems/ - Published: 2025-04-02T23:08:33+10:00 - Author: Barra Solar Power Townsville # Solar Battery Systems Townsville Barra Solar Power installs home solar batteries in Townsville and across North Queensland, including Sigenergy, Tesla Powerwall 3, Sungrow and SolaX. Our own local team designs and fits each system. Need panels as well? See [solar panels in Townsville](https://www.barrasolarpower.com.au/solar-panel/), or start with a [Townsville solar](https://www.barrasolarpower.com.au/) overview on the home page. * Cost * ## How much does a solar battery cost in Townsville? * The price is set by usable capacity (kWh), brand, whether you want blackout backup, switchboard work and Ergon approval. The federal battery rebate comes off the quote: full rate on the first 14 kWh of usable capacity, then less above that. * [Send us a recent Ergon bill for a fixed written quote](https://www.barrasolarpower.com.au/contact-us/) * Size * ## What size solar battery do I need? * It comes down to how much power you use after the sun goes down. Check your evening and overnight use, then how much spare solar you export each day. The right usable capacity sits near the smaller of those two numbers. Bigger is not always better. * Heat shortens battery life in North Queensland, so we plan placement out of the afternoon sun. Rebate rules and rates are set by the federal government and can change, so your quote shows what applies on your install date. * [Solar and battery questions](https://www.barrasolarpower.com.au/solar-battery-questions/) * [Adding a battery to existing solar](https://www.barrasolarpower.com.au/add-battery-to-existing-solar/) ## Solar battery sizes for Townsville homes Most of your power is used after dark. A battery stores your solar for the night, so we quote batteries, or solar with a battery. * ### Small home battery * about 8–10 kWh * Couples, retirees and smaller homes. Lights, fridge, TV and one air con at night. * ### Medium home battery * about 13–18 kWh * Families running air con most evenings. * ### Large home battery * 25+ kWh * Big homes with a pool, ducted air con or an EV. **No solar yet?** We size [solar to your roof](https://www.barrasolarpower.com.au/solar-panel/) and pair it with the right battery. Exact sizes depend on the brand. We install [Sigenergy Townsville](https://www.barrasolarpower.com.au/sigenergy-battery-systems/), [Tesla Powerwall Townsville](https://www.barrasolarpower.com.au/townsville-tesla-powerwall/), [Sungrow Townsville](https://www.barrasolarpower.com.au/sungrow-battery-system/), [SolaX Townsville](https://www.barrasolarpower.com.au/solax-battery-systems/), and [BYD](https://www.barrasolarpower.com.au/byd-battery-systems/) on some existing systems. ### Federal battery rebate * First 14 kWh Full rebate, around 30% off * 14–28 kWh 60% of the rate * 28–50 kWh 15% of the rate Set by your install date, not the date you sign. **It steps down on 1 January 2027.** ### What will run during a blackout? A battery only supplies backup if the system is designed for it. Start with the circuits you need, then check the inverter output and the charge available. Stored energy and power output are different limits: battery capacity alone does not tell you whether it can run your air con. LoadsWhich circuits or appliances need backup? PowerCan the inverter run those loads together? EnergyHow much usable charge will be available when the power goes out? ConfigurationWhat backup equipment is included, and which circuits are excluded? Run timeWhat does the estimate assume about appliance use and starting charge? Ask us to explain these points in your written quote. ### What affects solar battery costs in Townsville * Brand and size * Switchboard * Blackout backup * [Ergon approval](https://www.barrasolarpower.com.au/ergon-solar-townsville/) * Roof type [Get a quote](https://www.barrasolarpower.com.au/contact-us/) [Try the savings calculator](https://www.barrasolarpower.com.au/solar-battery-savings-calculator/) [07 4401 5122](https://www.barrasolarpower.com.au/battery-systems/0744015122) [ ⌊Sigenergy home energy solution with a click here to learn more button⌉ ](https://www.barrasolarpower.com.au/sigenergy-battery-systems/) [ ⌊Tesla Powerwall 3 button advertising etc.⌉ ](https://www.barrasolarpower.com.au/townsville-tesla-powerwall/) [ ⌊Sungrow inverter and battery at a modern home, with a click here to learn more button⌉ ](https://www.barrasolarpower.com.au/sungrow-battery-system/) [ ⌊SolaX Power battery and inverter at a modern home, with a click here to learn more button⌉ ](https://www.barrasolarpower.com.au/solax-battery-systems/) [ ⌊BYD home battery with a click here to learn more button⌉ ](https://www.barrasolarpower.com.au/byd-battery-systems/) Battery enquiry ## Talk to the team. Tell us what you’re after. Our own Townsville team will be in touch, usually the next business day (allow up to 3 business days when busy). [Call 07 4401 5122](https://www.barrasolarpower.com.au/battery-systems/+61744015122) [Email us](https://www.barrasolarpower.com.au/battery-systems/sales@barrasolarpower.com.au) ### Talk to the team Tell us what you’re after and we’ll be in touch. First name Please enter your first name. Last name Please enter your last name. Address Mobile Please enter an Australian mobile or landline, e.g. 0412 345 678. Email Please enter a valid email address. What can we help with? New solarSolar & BatteryAdd a batteryUpgrade my systemSomething else Please choose one. Notes We collect personal information from you when it is reasonably necessary for business purposes, including an occasional email regarding our latest offers, you can remove yourself at any time by finding the unsubscribe option at the bottom of any email from Barra Solar Power. By sending, you agree Barra Solar Power can store your details and contact you about your enquiry. [Privacy](https://www.barrasolarpower.com.au/privacy-policy-page/) ### Thanks, . We’ve got your details. The team will be in touch shortly. [Prefer to talk now? Call us](https://www.barrasolarpower.com.au/battery-systems/+61744015122) Your details are only used to respond to your enquiry, as set out in our [privacy policy](https://www.barrasolarpower.com.au/privacy-policy-page/). Frequently asked questions ## Solar battery questions Battery storage can be tailored to your home, existing solar and energy goals. You can compare your options with our [solar and battery savings calculator](https://www.barrasolarpower.com.au/solar-battery-savings-calculator/), read our [case studies](https://www.barrasolarpower.com.au/results/), or [contact us](https://www.barrasolarpower.com.au/contact-us/) for a tailored quote on 07 4401 5122. If you are considering panels as well, explore our [solar panels in Townsville](https://www.barrasolarpower.com.au/solar-panel/) and the [LONGi solar panels Townsville](https://www.barrasolarpower.com.au/longi-solar-panels-townsville/) we fit most. 01Which battery brands do you install? Sigenergy is the battery we install most, as part of a SigenStor system that grows one module at a time. We also install Tesla Powerwall 3, Sungrow and SolaX, and BYD when adding to some existing systems. We recommend one to suit your home, switchboard and how you want to use stored power. 02How is the right battery size chosen? We size it from your Ergon bills or smart meter data: how much power you use in the evening and overnight, and how much spare solar you send to the grid in the day. Your roof and switchboard set the limits. We confirm the size in your written quote. 03Will a battery keep my home running in a blackout? Only if it is designed for backup. The circuits included, inverter output and charge available determine what can run and for how long. See [what will run during a blackout](https://www.barrasolarpower.com.au/battery-systems/#blackout-backup) above. 04Can a battery work with Ergon Energy? Yes. Ergon must approve the battery before we connect it, even if it won’t export. On a single-phase home, the hybrid inverter counts toward Ergon’s 10 kVA limit. If you’re on the 44c Solar Bonus Scheme, a battery can end it, so tell us before we design. Read more about [solar and batteries on Ergon in Townsville](https://www.barrasolarpower.com.au/ergon-solar-townsville/). 05What is the next step for a battery quote? Send us a recent power bill, a photo of your switchboard and, if you have solar, a photo of your inverter label. We’ll recommend a battery and send a written quote. [Contact our Townsville team](https://www.barrasolarpower.com.au/contact-us/) or call 07 4401 5122. 06How much does a 10kW solar and battery system cost in Townsville? It depends on your home. The main factors are the battery brand and size, your switchboard, blackout backup, Ergon approval and your roof type. The federal battery rebate takes around 30% off an eligible battery. For a quote based on your bills and roof, call 07 4401 5122 or request a quote online. 07What size battery suits a 10 to 30 kW solar system? It depends on how much power you use at night, not just your panels. Couples and smaller homes usually need about 8 to 10 kWh. Families running air con most evenings usually need about 13 to 18 kWh. Big homes with a pool, ducted air con or an EV usually need 25 kWh or more. Exact sizes depend on the brand, so we confirm the size from your bills. 08Is the federal battery rebate going down? Yes. It steps down on 1 January 2027, then again every six months. The rebate is set by your install date, not the date you sign. The first 14 kWh of usable capacity gets the full rebate, 14 to 28 kWh gets 60% of the rate, and 28 to 50 kWh gets 15%. 09How long do solar batteries last? Most home batteries we install carry a 10-year manufacturer warranty, often limited by years or total energy delivered, whichever comes first. Most promise around 60 to 80% of the original capacity at the end. Heat shortens battery life, so in Townsville we install batteries out of direct sun wherever the site allows. 10Can a solar battery be installed outside? Yes, if the model is rated for it. Sigenergy and SolaX batteries are IP66 rated, and Tesla Powerwall 3 is rated for indoor and outdoor use. We still choose a spot out of the afternoon sun, because heat shortens battery life. 11Can a generator work with my home battery? Yes. With a new solar and battery install we can fit a generator input socket. We can supply and install a compatible generator (or help you choose the right one) and set it to auto-start and charge the batteries (for example on cloudy days). A generator can also be sole backup with no batteries, using an input socket and changeover switch. We also sort generator wiring issues on systems we install, including Tesla Powerwall. Further reading: [battery sizing: why your total Ergon bill is only the starting point](https://www.barrasolarpower.com.au/battery-news/battery-sizing-evening-use-not-bill-total/), or see our [custom solar and battery packages](https://www.barrasolarpower.com.au/services/solar-and-battery-packages/). Solar not working as it should? See our [solar repairs and servicing](https://www.barrasolarpower.com.au/services/solar-repairs-and-servicing-townsville/) page before deciding whether equipment needs replacing. Thinking about a battery with new panels? See our [solar panels in Townsville](https://www.barrasolarpower.com.au/solar-panel/) page for systems sized to your roof and Ergon limit.