Solar System Size Calculator

What size solar system do I need?

1. Usage

Average quarterly electricity bill

$400

From your power bill. Used to estimate your daily kWh usage.

2. Sunshine by location

Your postcode

Please enter a valid 4-digit Australian postcode.

Enter your postcode to find your peak sun hours.

3. Roof space

How big is your home?

A medium home typically has 30–40m² of usable north-facing roof space, suiting up to a 10kW system.

YOUR RESULTS

RECOMMENDED SYSTEM SIZE

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DAILY PRODUCTION

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←Fill in your details on the left to see your results

Recommended system size—

Minimum viable size—

Maximum useful size—

Inverter size needed—

Disclaimer
This solar system size calculator is not a quote, it's to give you an idea of the right system size for your home. You will need to get quotes from local installers to confirm the right system for your roof and usage.