10.5kW solar panel system installed on a large Brisbane family home
Best size for big Brisbane homes

10.5kW Solar System
From $5,290 fully installed.

24 Tier-1 panels · 10kW 3-phase inverter · ~42 kWh/day in Brisbane. Built for big families with pools, ducted AC and EVs — save up to $3,800 a year.

CEC Accredited 25-yr Warranty 3-Phase Engineered 4.9★ · 287 reviews
24
Tier-1 Panels
440W mono PERC
~42
kWh / day
Brisbane average
$3,800
Saved / year
typical big home
13.2 t
CO₂ offset / yr
= 61 trees planted
Built for big loads

Made for homes that actually use power.

If your last bill scared you, 10.5kW is the size that fixes it.

4-5 bedroom homes

Families using 40-55 kWh per day with multiple AC units.

Pool households

Pool pumps run 6-8 hrs daily — solar covers it for free.

Ducted air-con

Slash summer cooling bills by 80-100% on sunny days.

EV owners

Charge a Tesla Model Y from sunlight — ~50 km of range per hour.

The numbers

A $5,200 bill becomes $1,400.

Big homes burn $4,500-$6,000 a year on power. A 10.5kW system slashes it to a small connection fee plus night-time usage — and pays for itself in under 5 years.

  • 42 kWh / day average generation in Brisbane
  • Covers pool, AC, EV + household at the same time
  • Dynamic export earns up to $900/yr in feed-in credits
  • Pair with a 13kWh battery to hit 95%+ self-sufficiency
Big-home bill — before solar
$5,200/yr
After 10.5kW solar
$1,400/yr
You save
$3,800
Daily generation42 kWh
Self-consumption~50%
Feed-in credit (8c)~$610/yr
Payback period4.2 years
25-yr lifetime saving$95,000+
What's included

Engineered for 3-phase. No corners cut.

Every component sized for big-home loads and 25+ years in the Queensland sun.

24 × Tier-1 Mono PERC Panels

440W high-efficiency modules, 22%+ conversion.

10kW 3-Phase Hybrid Inverter

Fronius / Sungrow / GoodWe — full export to all phases.

Cyclone-Rated Mounting

Clenergy / Sunlock rail kit, AS/NZS 1170.2 certified.

Smart Phone Monitoring

Track each phase, exports & savings in real-time.

Energex DA Application

Dynamic export approval for max feed-in potential.

Battery + EV Ready

Pre-wired for Powerwall 3, BYD HVS or Tesla Wall Connector.

Pricing · STC rebate applied

Three honest packages. Pick your tier.

All prices fully installed in SE QLD, single-storey tin roof. Tile / double-storey from +$500.

Value

$5,290
fully installed · after STC rebate
Panels
Longi Hi-MO 6 · 440W × 24
Inverter
Sungrow SG10RT 3-phase
Warranty
12 yr product · 25 yr performance
Get this package
Most popular

Premium

$6,890
fully installed · after STC rebate
Panels
Trina Vertex S+ · 440W × 24
Inverter
GoodWe DT 10kW 3-phase Wi-Fi
Warranty
25 yr product · 30 yr performance
Get this package

Elite

$8,490
fully installed · after STC rebate
Panels
REC Alpha Pure-R · 430W × 25
Inverter
Fronius Symo 10.0-3-M
Warranty
25 yr product · 30 yr performance
Get this package
Size comparison

6.6kW vs 10.5kW vs 13.2kW

6.6kW10.5kW ★ Best for big homes13.2kW
Daily output (Brisbane)27 kWh42 kWh53 kWh
Panels required162430
Roof space32 m²48 m²60 m²
Best for household size3-5 people4-6 people5+ / big home
Annual bill savings$2,400$3,800$4,600
STC rebate (2026)~$2,200~$3,500~$4,400
Payback period3-5 yrs4-5 yrs4-6 yrs
Phase requiredSingleThree-phase ★Three-phase
From quote to switch-on

Four simple steps. Zero stress.

01
Step 1

Free Bill Analysis

We review 12 months of usage + identify peak loads (pool, AC, EV).

30 min
02
Step 2

3-Phase Design

Engineered string layout balanced across all three phases.

2 days
03
Step 3

Energex Approval

We lodge connection + dynamic export paperwork — 7-14 days.

7-14 days
04
Step 4

Install Day

CEC-accredited 2-installer crew · 1 day · zero mess.

1 day
2026 Rebates

Up to $7,000+ off — we handle every form.

The federal STC rebate is bigger for 10.5kW systems. Add the new Cheaper Home Batteries Program for 30% off storage, plus 0% interest finance to spread the upfront cost.

Federal STC rebate
Zone 3 (SE QLD), 10.5kW system, deeming period 2026
~$3,500
Cheaper Home Batteries Program
Federal rebate on eligible storage (from July 2025)
30% off
Dynamic export feed-in
Export up to 15kW when grid has capacity
Up to $900/yr
Interest-free finance
Brighte / Humm 6-60 months — no deposit
0% p.a.
FAQ

10.5kW questions, answered.

Service area

Installing 10.5kW systems across SE Queensland

Brisbane CBDNew FarmHamiltonBulimbaToowongIndooroopillyLoganSpringfieldIpswichRedlandsGold CoastSunshine Coast

Stop subsidising the grid. Power your whole home.

STC rebates drop every January. Lock in $5,290 today and start saving from week one.