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Solar in South Lake
How much should solar panels make in South Lake (6164)? Typical output for a north-facing roof, month by month, from 25 years of NASA sunshine records.
A 6.6 kW system in South Lake makes about 29 kWh a day on average, or around 10,703 kWh a year.
| Month | Sun hrs/day | kWh/day | kWh/month |
|---|---|---|---|
| January | 7.9 | 39.2 | 1,215 |
| February | 7.4 | 36.8 | 1,040 |
| March | 6.6 | 32.6 | 1,011 |
| April | 5.2 | 25.7 | 770 |
| May | 4.2 | 20.8 | 645 |
| June | 3.5 | 17.6 | 527 |
| July | 3.7 | 18.6 | 575 |
| August | 4.5 | 22.4 | 695 |
| September | 5.6 | 27.8 | 834 |
| October | 6.8 | 33.5 | 1,039 |
| November | 7.6 | 37.5 | 1,125 |
| December | 8.0 | 39.5 | 1,226 |
| Year | 5.9 | 29.3 | 10,703 |
Typical long-term averages for a north-facing roof at a normal pitch, after everyday losses from heat, dust and wiring. East- or west-facing panels make roughly 10 to 15% less. Any single day can be higher or lower depending on the weather.
Will it cover your power use?
Average daily use for Australian homes, compared with what a 6.6 kW system makes in South Lake.
Across the year, a 6.6 kW system here makes more than a typical four-person home uses. In June it makes about 18 kWh a day, which is less than a four-person home uses.
Solar is made in the middle of the day, while most homes use more power in the morning and evening. Without a battery, a good share of what your panels make is exported to the grid, so solar covers less of your bill than these totals suggest. Running the dishwasher, washing machine and pool pump during the day helps.
Household use figures are Australia-wide averages from the Australian Energy Regulator's 2020 benchmarks. Air conditioning, a pool or an electric car can add a lot more.
Is South Lake good for solar?
Yes. Like the rest of Perth, South Lake is one of the sunniest places in Australia to own solar panels. It gets about the same sunshine as the Perth CBD, averaging 5.9 sun hours a day on a north-facing roof.
December is the strongest month, when a 6.6 kW system makes about 40 kWh a day. June is the weakest, at about 18 kWh, so expect your summer output to be roughly 2.3 times your winter output. That swing is normal and doesn't mean anything is wrong.
How many homes in South Lake have solar?
Solar systems installed in postcode 6164 (shared with Atwell, Aubin Grove, Banjup and others), from the Clean Energy Regulator.
That works out to about 83 systems for every 100 houses and townhouses in 6164, which is one of the highest rates in Perth. Across Perth it's about 67 for every 100. 1,407 more were added between Oct 2025 and Sep 2026, so solar is still being installed here every week.
These count every small solar system registered since 2001, including upgrades and replacements, so they run a little higher than the share of homes with solar today. House counts are from the 2021 Census.
Already have solar in South Lake?
Check how your panels compare with the real sunshine in South Lake on any day in the last month.
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Sunshine data: NASA POWER long-term averages (2001–2025) for a tilted, north-facing surface, adjusted to South Lake's location. Output assumes 75% of that sunshine becomes power after typical losses. Solar installations: based on Clean Energy Regulator material licensed under CC BY 4.0. House counts: ABS 2021 Census.