How much will your solar generate?
Estimate your daily, monthly and yearly solar output by postcode and system size, plus the CO₂ you'll avoid.
Output is the annual average — summer days run well above this, winter days below. Real figures depend on roof orientation, shading and panel quality.
Enter a postcode to estimate your generation and CO₂ savings.
Indicative estimate. Generation averages verified 2026-06-22 (Clean Energy Council / PVWatts city data). Your output varies with orientation, shading and weather.
Frequently asked questions
How much power does a solar system generate?
In Australia each 1 kW of panels produces roughly 3.3–4.4 kWh per day on average, depending on your location. A 6.6 kW system makes about 25–30 kWh a day in most capital cities across the year.
Why does my postcode matter?
Solar output tracks sunlight. Sunnier regions like Perth, Brisbane and Adelaide generate more per kW than cooler, cloudier ones like Melbourne and Hobart. We use city-level generation averages to estimate your output.
Will I really get this much every day?
No — it's an annual average. Summer days generate well above the figure and winter days below it. Orientation, tilt, shading and panel quality also shift the real number.
How much CO₂ does solar save?
Each kWh of solar displaces roughly 0.66 kg of CO₂ from Australia's grid. A typical 6.6 kW system avoids several tonnes a year — the calculator shows the equivalent in trees planted.
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