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6.6 kW solar.

Leading-brand 6.6 kW solar packages providing an average of 30 kWh* of solar generation per day — the proven whole-home starting point.

30

kWh/day annual average

$2,290*

max annual savings*

$2,088

after STC rebate*

Step 1 · Panels

Pick the panel.

Three leading brands, every package available at this size.

All solar →

Who it fits.

Typically suits an average daily usage of about 25 kWh, with a tolerance of 5 kWh.

Daily generation.

30 kWh* annual daily average (Zone 3, Perth irradiance)

Step 2 — Choose your inverter

Goodwe EH 5.0

Hybrid inverter · 1-phase

$2,190*

Fronius Primo GEN24 5.0

Hybrid inverter · 1-phase

$3,090*

Sigenergy Sigen EC SP 5.0

Hybrid inverter/controller · 1-phase

$3,490*

Step 3 — Add storage (optional)

Tesla Powerwall 3

13.5 kWh · all-in-one AC system

$11,290*

Goodwe Lynx Home F G2

16 kWh · DC-coupled

$5,390*

Sigenergy Sigen Battery

24 kWh · modular combination

$10,190*

*Prices are package-contribution guides sourced June 2026, subject to site inspection and current promotions. Savings modelled on Synergy Home Plan A1 (30 c/kWh, 2025) at 100% utilisation, north-facing array, 25° pitch, Zone 3 Perth irradiance. Your quote confirms exact figures.

FAQ

6.6 kW solar, answered.

How much can a 6.6 kW system save me?

Up to $2,290* per year under optimal conditions — 100% self-consumption on the Synergy Home Plan A1 tariff (30 c/kWh, 2025), north-facing array at 25° pitch. Real-world savings depend on how much generation you use as it's produced.

What rebate applies in Perth, WA?

Small-scale Technology Certificates (STCs) discount a 6.6 kW system by roughly $2,088 at the point of sale (2025, Zone 3 at $38/STC). The rebate steps down each calendar year.

Am I eligible for a feed-in tariff?

Yes — Synergy's DEBS scheme pays approximately 10 c/kWh ex GST for exports between 3 pm and 9 pm, and 2 c/kWh ex GST off-peak.

Can I oversize beyond 6.6 kW?

Often, yes. Panel arrays can usually be oversized against the inverter rating, and oversizing is especially worthwhile when adding a battery. PSW confirms what your roof, phase supply and network connection allow at quote.

Price a 6.6 kW system for your roof.

Send your bill and address — orientation, shading and switchboard are checked before the number comes back.

Get a quote