Australian price guide · 2026
How much does solar battery retrofit
cost in Australia?
Add battery storage to existing solar system — Tesla Powerwall, BYD, Sungrow, with hybrid inverter if needed.
Typical total (AU)$14,000–$21,500
What's in a typical quote
| Line item | Typical range |
|---|---|
| Tesla Powerwall 3 (13.5kWh) | $12,500–$15,500 |
| Install + gateway + integration | $1,600–$2,800 |
| Hybrid inverter upgrade (if needed) | $1,800–$3,200 |
What affects the price
- Battery brand + kWh
- Existing inverter compatibility
- State rebate eligibility
- Backup mode
How to get the most accurate price
Prices vary a lot by region, access, and job specifics. For a real quote, get 2–3 licensed solar installers to assess the job — most reputable tradies quote for free. GST (10%) is added on top of the ranges shown.
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