6.6kW Solar System
From $3,490 fully installed.
16 Tier-1 panels · 5kW Wi-Fi inverter · ~27 kWh/day in Brisbane. Wipe up to $2,400 a year off your power bill and pay it back in under 5 years.
Why 6.6kW outperforms every other size in Brisbane.
Energex caps single-phase inverter exports at 5kW. By stacking 6.6kW of panels onto a 5kW inverter (the legal 1.33:1 over-sizing ratio), you generate 33% more power on cloudy mornings, late afternoons and winter days — for almost the same install cost as a 5kW system.
- Maximises the federal STC rebate (~$2,200 in 2026)
- Stays under Energex / Ergon single-phase export limit
- Generates power earlier in the morning & later at night
- Future-proofs your home for a battery or EV charger
Built from premium gear. No hidden extras.
Every quote is line-itemised — you see the exact panel, inverter, mounting and monitoring brand before you sign.
16 × Tier-1 Mono PERC Panels
440W high-efficiency modules with 22%+ conversion.
5kW Hybrid-Ready Inverter
Fronius / Sungrow / GoodWe with Wi-Fi monitoring.
Cyclone-Rated Mounting
Clenergy / Sunlock rail kit, AS/NZS 1170.2 certified.
Live App Monitoring
Track generation, exports & savings in real-time.
Full Compliance Pack
Energex / Ergon CEC paperwork & STC handled for you.
Battery-Ready Wiring
Pre-wired for Tesla, Sungrow or BYD storage later.
Three honest packages. Pick your tier.
All prices fully installed in SE QLD on a single-storey tin roof. Tile / double-storey from +$300.
Value
- Panels
- Longi / Risen 440W
- Inverter
- Sungrow SG5.0RS
- Warranty
- 12 yr product · 25 yr performance
Premium
- Panels
- Trina Vertex S+ 440W
- Inverter
- GoodWe DNS 5kW Wi-Fi
- Warranty
- 25 yr product · 30 yr performance
Elite
- Panels
- REC Alpha Pure-R 430W
- Inverter
- Fronius Primo 5.0-1 AUS
- Warranty
- 25 yr product · 30 yr performance
5kW vs 6.6kW vs 10kW — head to head.
| 5kW | 6.6kW ★ Best | 10kW | |
|---|---|---|---|
| Daily output (Brisbane) | 20 kWh | 27 kWh | 42 kWh |
| Panels required | 12 | 16 | 24 |
| Roof space | 24 m² | 32 m² | 48 m² |
| Best for household size | 1-2 people | 3-5 people | 5+ people |
| Annual bill savings | $1,400 | $2,400 | $3,800 |
| STC rebate (2026) | ~$1,650 | ~$2,200 | ~$3,350 |
| Payback period | 3-4 yrs | 3-5 yrs | 4-6 yrs |
Four simple steps. Zero stress.
Free Bill Analysis
We review 12 months of usage & shading via satellite.
Custom Design
String layout, tilt & azimuth optimised for your roof.
Energex Approval
We lodge connection paperwork — usually 5-10 days.
Install Day
CEC-accredited crew · 6-8 hours · zero mess left behind.
Up to $5,000+ off — and we lodge every form.
The federal STC rebate is automatically applied to your quote. Add the new Cheaper Home Batteries Program for 30% off storage, plus QLD interest-free loans where eligible.
Everything Brisbane homeowners ask.
Installing 6.6kW systems across SE Queensland
Lock in $3,490 — before STC rebates drop again in January.
STC rebates decline every year on Jan 1. A 6.6kW system installed today saves you roughly $400 vs the same system next year.