How much power solar panels make in Melbourne
Month-by-month output for Melbourne from 1 kW up to 15 kW of panels, using satellite data from the European Commission's PVGIS model.
Updated November 2026 · Litmec Electrical, REC-10383
Each kilowatt of north-facing panels in Melbourne makes about 1,438 kWh a year, or 3.9 kWh a day on average. A 6.6 kW system makes about 9,500 kWh a year: around 35 kWh a day in December and 15 kWh a day in June.
Summer output is about 2.3 times winter output, which is why sizing for winter alone over-builds a system.
Output by month
| Month | kWh/day per kW | kWh/month per kW | 6.6 kW, kWh/day | 10 kW, kWh/day | 13.2 kW, kWh/day |
|---|---|---|---|---|---|
| Jan | 5.31 | 165 | 35.0 | 53.1 | 70.1 |
| Feb | 5.02 | 142 | 33.1 | 50.2 | 66.3 |
| Mar | 4.30 | 133 | 28.4 | 43.0 | 56.8 |
| Apr | 3.39 | 102 | 22.4 | 33.9 | 44.7 |
| May | 2.61 | 81 | 17.2 | 26.1 | 34.5 |
| Jun | 2.27 | 68 | 15.0 | 22.7 | 30.0 |
| Jul | 2.48 | 77 | 16.4 | 24.8 | 32.7 |
| Aug | 3.10 | 96 | 20.5 | 31.0 | 40.9 |
| Sep | 3.99 | 120 | 26.3 | 39.9 | 52.7 |
| Oct | 4.65 | 144 | 30.7 | 46.5 | 61.4 |
| Nov | 4.94 | 148 | 32.6 | 49.4 | 65.2 |
| Dec | 5.26 | 163 | 34.7 | 52.6 | 69.4 |
| Year | 3.94 | 1,438 | 26.0 | 39.4 | 52.0 |
Output by system size
| System | Panels (440 W) | kWh a year | kWh a day, average | Best month, a day | Worst month, a day |
|---|---|---|---|---|---|
| 5 kW | 11 | 7,188 | 19.7 | 26.5 | 11.3 |
| 6.6 kW | 15 | 9,488 | 26.0 | 35.0 | 15.0 |
| 8 kW | 18 | 11,501 | 31.5 | 42.5 | 18.2 |
| 10 kW | 23 | 14,376 | 39.4 | 53.1 | 22.7 |
| 13.2 kW | 30 | 18,976 | 52.0 | 70.1 | 30.0 |
| 15 kW | 34 | 21,564 | 59.1 | 79.6 | 34.0 |
Why summer and winter are so different
In June the sun is low and the days are short, so the same panels make well under half of what they make in December. A system that covers your whole bill in winter will export a lot in summer, and exported power earns little in Victoria. Most households are better served by sizing for the year and adding a battery if evening use is high.
Does it change across Melbourne?
Barely. Across the 38 suburbs we've modelled, from Werribee to Kew, yearly output for a north-facing kilowatt ranges only from 1,417 to 1,460 kWh, a spread of about 3%. Roof direction, pitch and shade matter far more than suburb. See every suburb.
What real systems lose
The figures already allow 14% for heat, wiring, inverter and dust losses. Panels also lose about half a percent of output a year as they age, so a system makes a little less in year 20 than in year 1. Dirty panels, shading and inverter clipping on oversized arrays can take more; good design keeps those small.
Related
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Questions
How many kWh does a 6.6 kW solar system produce in Melbourne?
About 9,500 kWh a year facing north, which averages 26 kWh a day: roughly 35 kWh a day in December and 15 kWh a day in June.
How much does a 10 kW solar system produce in Melbourne?
About 14,400 kWh a year facing north, or 39 kWh a day on average.
How much power does one solar panel make in Melbourne?
A 440 W panel facing north makes about 633 kWh a year in Melbourne, roughly 1.7 kWh a day.
Do solar panels work in Melbourne in winter?
Yes, at reduced output. North-facing panels make about 2.3 kWh per kW a day in June, against 5.3 in December. Cloudy days still produce some power.
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