Real Home Battery Cost in Australia After Every Rebate — 2026 Breakdown
No "fill out a form to see the price" gate. All numbers are on the page — broken down by state, by capacity, by brand tier. Every figure is inc-GST and after the federal CBRS rebate has been deducted.
Independent analysis · Updated August 2026
A 20 kWh home battery install in Australia in 2026 — after the federal CBRS rebate — costs $6,500-9,500 out-of-pocket depending on state, brand and site. That's the most common size band; smaller 10 kWh installs run $3,300-6,000 and larger 30 kWh installs $8,400-13,500. Choosing a value LFP brand (Pytes / SOFAR / HYXi) saves $3,000-5,000 vs Tesla Powerwall 3 with almost no functional loss.
By state: what the same battery costs across AU
Hardware costs the same across states — but install labour prices per city. VIC is baseline; other states apply the multiplier below. The numbers are 20 kWh installed prices after CBRS, inc-GST, anchored to Sungrow SBH (value column) and Tesla Powerwall 3 (premium column).
| State | Labour multiplier | 20 kWh Sungrow SBH | 20 kWh Tesla PW3 |
|---|---|---|---|
| VIC | 1.00× (Melbourne — baseline) | $6,500 | $9,500 |
| NSW | 1.13× (Sydney) | $7,350 | $10,700 |
| QLD | 1.15× (Brisbane) | $7,475 | $10,900 |
| SA | 1.20× (Adelaide) | $7,800 | $11,400 |
| WA | 1.25× (Perth) | $8,125 | $11,875 |
| ACT | 1.25× (Canberra) | $8,125 | $11,875 |
| TAS | 1.25× (Hobart) | $8,125 | $11,875 |
| NT | 1.30× (Darwin) | $8,450 | $12,350 |
By brand tier: the 4 price bands
The AU market groups into roughly 4 brand tiers. Numbers below are Melbourne baseline, installed, after CBRS, inc-GST. Other states apply the multiplier from the table above.
| Tier | Brands | 10 kWh | 20 kWh | 30 kWh |
|---|---|---|---|---|
| Value LFP | Pytes, SOFAR, HYXi, Growatt | $3,300 – $4,800 | $4,500 – $7,500 | $5,900 – $9,200 |
| Mid-premium all-in-one | AlphaESS, FoxESS, GoodWe | $4,200 – $6,000 | $6,500 – $9,500 | $8,400 – $11,800 |
| Premium AU-supported | Sungrow SBH, Sigenergy SigenStor | $5,000 – $6,900 | $7,500 – $11,000 | $9,800 – $13,500 |
| Premium fixed-format | Tesla Powerwall 3, Sonnen | n/a (13.5 kWh SKU) | $9,500 – $12,500 | $14,000 – $18,000 |
What a proper quote should look like
Example: single-phase Melbourne 20 kWh Sungrow SBH + Sungrow SH10RT hybrid inverter, standard site with no extras. This is the level of detail you should expect from any quote.
If an installer gives you just a "net price" of $6,660 without the breakdown above, ask for it in writing — a transparent line-item quote is the minimum industry standard.
Common hidden extras that surprise customers
- •Whole-home backup gateway — $800-1,800 depending on brand (Tesla Backup Gateway 2 most expensive, Sungrow SG-BG3 mid-range). Skip this if essential-circuits backup is enough.
- •Long cable run from switchboard — $130 (5-10m) up to $705 (20m+). If your switchboard is on the far side of the house from the battery mount wall, this is a real line item.
- •3-phase inverter premium — $500-1,650 if you have 3-phase supply AND insist on a matched 3-phase hybrid inverter. Alternative: fit a single-phase inverter to one phase (compliant but output-capped, saves the premium).
- •Regional/remote travel surcharge — $400 to $1,600 depending on distance from the metro CBD. No surcharge for metro postcodes.
- •Switchboard upgrade — $800-1,500 only if your switchboard is 20+ years old ceramic-fuse style and fails the compliance audit. Most homes built in the last 20 years do not need this.
Frequently asked questions
What is the average out-of-pocket cost for a home battery in Australia after rebates?+
Does the state you live in change how much you pay?+
How much do the different brand tiers cost after rebates?+
What line items make up the total install cost?+
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Can I finance the out-of-pocket cost?+
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