solar system cost

8 kW solar: explore the numbers.

Build your own cost and generation scenario. System size must be assessed against your roof and usage.

Build a planning range.

Illustrative model v1 — not researched Australian market prices. Replace the example rate with a real written quote. No rebate is assumed.

StateSystem sizeYour assumed cost per kW (A$)Roof complexityEquipment tierOptional battery quoted cost (A$)

State does not change this model. Network, roof access, wiring, removal and switchboard work need separate quotes.

YOUR ILLUSTRATIVE BUDGET

$6,400 – $9,600

Solar base: 8 × $1,000 × 1 × 1 = $8,000
Planning uncertainty: ±20% of solar base (hypothetical)
Battery allowance: $0
Automatic incentives: None deducted

Explore savings separately →

MAKE THE NUMBERS YOURS

Your solar, your assumptions.

Explore an illustrative scenario. These defaults are examples, not local irradiation measurements, market prices or a personalised prediction.

System size 8 kW

Effective sun hours / dayAnnual household use (kWh)Performance ratioSelf-consumption fraction (0–1)Import tariff (A$/kWh)Feed-in tariff (A$/kWh)Net installation cost (A$)Annual maintenance (A$)

INDICATIVE ANNUAL NET SAVINGS

$1,635/ year

9,344kWh generated / year

4.3years simple payback

Self-used 4,672 kWh · Exported 4,672 kWh

8 kW × 4 hours × 365 × 0.8 performance. Savings use A$0.3/kWh import and A$0.05/kWh export.

Illustration only. Excludes finance, degradation, tariff changes and export curtailment. A professional site design is required.

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