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- Solar output by city
Solar Output per kW by City in Australia
Estimated output per kW for a north-facing roof at about 22°, calculated by this site from NASA POWER radiation and temperature (2001–2025 monthly averages).
Per day and per year
| City | kWh/day | kWh/year | 6.6 kW, per day |
|---|---|---|---|
| Sydney (NSW) | 3.8 | 1,400 | 25.3 |
| Newcastle (NSW) | 3.9 | 1,429 | 25.8 |
| Wagga Wagga (NSW) | 4.2 | 1,521 | 27.5 |
| Canberra (ACT) | 4.1 | 1,489 | 26.9 |
| Melbourne (VIC) | 3.8 | 1,377 | 24.9 |
| Mildura (VIC) | 4.4 | 1,588 | 28.7 |
| Brisbane (QLD) | 4.1 | 1,491 | 27.0 |
| Rockhampton (QLD) | 4.4 | 1,590 | 28.8 |
| Townsville (QLD) | 4.3 | 1,585 | 28.7 |
| Cairns (QLD) | 4.1 | 1,495 | 27.0 |
| Adelaide (SA) | 4.3 | 1,557 | 28.1 |
| Perth (WA) | 4.5 | 1,636 | 29.6 |
| Hobart (TAS) | 3.5 | 1,278 | 23.1 |
| Launceston (TAS) | 3.6 | 1,313 | 23.7 |
| Darwin (NT) | 4.2 | 1,533 | 27.7 |
| Alice Springs (NT) | 4.9 | 1,802 | 32.6 |
By month (kWh per day)
| City | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sydney | 4.6 | 4.2 | 3.9 | 3.4 | 3.1 | 2.5 | 3.0 | 3.6 | 4.2 | 4.4 | 4.5 | 4.6 |
| Newcastle | 4.6 | 4.2 | 3.9 | 3.5 | 3.2 | 2.7 | 3.1 | 3.8 | 4.3 | 4.5 | 4.5 | 4.6 |
| Wagga Wagga | 5.3 | 5.0 | 4.7 | 3.9 | 3.1 | 2.5 | 2.6 | 3.3 | 4.2 | 4.9 | 5.1 | 5.4 |
| Canberra | 4.9 | 4.5 | 4.2 | 3.7 | 3.3 | 2.7 | 3.0 | 3.7 | 4.4 | 4.7 | 4.9 | 5.0 |
| Melbourne | 5.2 | 4.8 | 4.3 | 3.3 | 2.5 | 2.1 | 2.3 | 2.9 | 3.7 | 4.4 | 4.8 | 5.1 |
| Mildura | 5.5 | 5.3 | 4.8 | 4.0 | 3.2 | 2.8 | 2.9 | 3.6 | 4.4 | 5.0 | 5.2 | 5.5 |
| Brisbane | 4.5 | 4.4 | 4.1 | 3.8 | 3.5 | 3.0 | 3.5 | 4.0 | 4.5 | 4.6 | 4.7 | 4.5 |
| Rockhampton | 4.4 | 4.4 | 4.3 | 4.2 | 3.9 | 3.6 | 4.0 | 4.4 | 4.8 | 4.9 | 4.8 | 4.6 |
| Townsville | 4.1 | 4.2 | 4.2 | 4.3 | 3.9 | 3.6 | 4.0 | 4.6 | 5.0 | 5.0 | 4.7 | 4.5 |
| Cairns | 3.9 | 3.9 | 3.9 | 4.0 | 3.8 | 3.5 | 3.8 | 4.3 | 4.7 | 4.7 | 4.5 | 4.2 |
| Adelaide | 5.6 | 5.3 | 4.7 | 3.9 | 3.0 | 2.7 | 2.9 | 3.5 | 4.2 | 4.9 | 5.3 | 5.4 |
| Perth | 5.7 | 5.4 | 4.9 | 4.0 | 3.4 | 2.9 | 3.0 | 3.6 | 4.3 | 5.1 | 5.6 | 5.8 |
| Hobart | 5.0 | 4.5 | 3.7 | 2.9 | 2.1 | 1.8 | 2.0 | 2.7 | 3.5 | 4.2 | 4.6 | 5.0 |
| Launceston | 5.1 | 4.6 | 3.9 | 3.0 | 2.3 | 1.9 | 2.1 | 2.7 | 3.5 | 4.3 | 4.8 | 5.1 |
| Darwin | 3.3 | 3.6 | 3.9 | 4.5 | 4.5 | 4.5 | 4.6 | 4.8 | 4.8 | 4.5 | 4.0 | 3.5 |
| Alice Springs | 4.9 | 5.1 | 5.0 | 5.0 | 4.5 | 4.4 | 4.6 | 5.2 | 5.3 | 5.3 | 5.1 | 4.8 |
Assumptions
- Losses (dust, wiring, inverter) total 18%; module temperature is the monthly mean + 25 °C; output falls 0.4% per °C. No shading.
- The official zone ratings used for STCs (1,382 kWh/kW a year in zone 3) are separate, conservative figures.
Sources: battery STC factors, size tiers, solar zones and deeming periods from the Clean Energy Regulator; postcode zones from the CER table (as of 1 January 2020); solar radiation and temperature from NASA POWER (2001–2025 monthly climatology). Calculated by this site (checked 2026-11-01).