Off-grid solar sizing in Australia
What a year-round off-grid system costs you in 40 cities, sized against the worst month rather than the annual average.
| City | Annual per kW | Worst month | Array for 3 kWh/day | Seasonal swing |
|---|---|---|---|---|
| Sydney | 1,335 kWh | June | 2.25 kW | 2.9× |
| Melbourne | 1,253 kWh | June | 2.96 kW | 4.0× |
| Brisbane | 1,518 kWh | June | 1.22 kW | 1.4× |
| Perth | 1,515 kWh | June | 2.02 kW | 3.1× |
| Adelaide | 1,398 kWh | June | 2.42 kW | 3.5× |
| Gold Coast | 1,426 kWh | June | 1.80 kW | 2.3× |
| Newcastle | 1,364 kWh | June | 2.16 kW | 2.8× |
| Sunshine Coast | 1,383 kWh | June | 1.76 kW | 2.1× |
| Canberra | 1,342 kWh | June | 2.45 kW | 3.3× |
| Central Coast | 1,329 kWh | June | 2.25 kW | 2.9× |
| Logan City | 1,380 kWh | June | 1.78 kW | 2.2× |
| Geelong | 1,244 kWh | June | 2.96 kW | 4.0× |
| Wollongong | 1,332 kWh | June | 2.28 kW | 2.9× |
| Hobart | 1,117 kWh | June | 3.95 kW | 5.0× |
| Townsville | 1,500 kWh | June | 1.25 kW | 1.5× |
| Cairns | 1,523 kWh | June | 1.18 kW | 1.4× |
| Toowoomba | 1,413 kWh | June | 1.73 kW | 2.1× |
| Darwin | 1,605 kWh | January | 1.07 kW | 1.3× |
| Ballarat | 1,241 kWh | June | 3.00 kW | 4.0× |
| Mandurah | 1,487 kWh | June | 2.16 kW | 3.4× |
| Bendigo | 1,325 kWh | June | 2.81 kW | 4.0× |
| Caloundra | 1,400 kWh | June | 1.76 kW | 2.2× |
| Launceston | 1,199 kWh | June | 3.62 kW | 4.9× |
| Maitland | 1,295 kWh | June | 2.16 kW | 2.6× |
| Tuggeranong | 1,343 kWh | June | 2.44 kW | 3.3× |
| Mackay | 1,502 kWh | June | 1.28 kW | 1.5× |
| Rockhampton | 1,502 kWh | June | 1.49 kW | 1.9× |
| Coffs Harbour | 1,365 kWh | June | 1.94 kW | 2.4× |
| Bunbury | 1,431 kWh | June | 2.29 kW | 3.5× |
| Bundaberg | 1,593 kWh | June | 1.09 kW | 1.3× |
| Adelaide Hills | 1,372 kWh | June | 2.51 kW | 3.6× |
| Hervey Bay | 1,490 kWh | June | 1.20 kW | 1.3× |
| Port Macquarie | 1,401 kWh | June | 2.00 kW | 2.6× |
| Gladstone | 1,448 kWh | June | 1.56 kW | 1.9× |
| Tamworth | 1,433 kWh | June | 2.06 kW | 2.8× |
| Dubbo | 1,448 kWh | June | 2.14 kW | 3.0× |
| Orange | 1,432 kWh | June | 2.32 kW | 3.3× |
| Wodonga | 1,319 kWh | June | 2.79 kW | 3.9× |
| Geraldton | 1,597 kWh | June | 1.69 kW | 2.6× |
| St Albans | 1,241 kWh | June | 2.99 kW | 4.0× |
Panel angles matter as much as panel count. Solar panel angles in Australia →