Solar energy in Auckland, New Zealand
Average irradiation 4.3 kWh/m²/day · ~1256 kWh per kWp per year
Monthly solar irradiation & temperature in Auckland (NASA POWER)
| Month | Irradiation (kWh/m²/day) | Avg temp (°C) | Est. production per kWp (kWh) |
|---|---|---|---|
| Jan | 6.66 | 19.8 | 162 |
| Feb | 5.77 | 20.4 | 140 |
| Mar | 4.75 | 19.1 | 115 |
| Apr | 3.43 | 17.0 | 83 |
| May | 2.41 | 14.7 | 59 |
| Jun | 1.97 | 12.6 | 48 |
| Jul | 2.17 | 11.4 | 53 |
| Aug | 2.92 | 11.8 | 71 |
| Sep | 3.99 | 12.9 | 97 |
| Oct | 5.07 | 14.2 | 123 |
| Nov | 6.07 | 16.0 | 148 |
| Dec | 6.34 | 18.2 | 154 |
Solar potential of Auckland explained
Auckland receives an average of 4.3 kilowatt-hours of solar energy per square metre per day, measured over four decades of satellite observation. In practical terms, every kilowatt-peak of installed PV capacity yields about 1256 kWh of electricity per year here, assuming a well-oriented system with a typical 80% performance ratio. This is a solid mid-range solar resource: production is meaningful year-round, though winter output drops noticeably.
Frequently asked questions
Is solar worth it in Auckland?
With 4.3 kWh/m²/day of average irradiation, a 1 kWp system in Auckland produces roughly 1256 kWh per year. That is a good solar resource; with current panel prices most systems pay back well within their lifetime.
How much electricity would a 5 kW system produce in Auckland?
Approximately 6,000 kWh per year — enough to cover a large share of a typical household's consumption.
What data is this based on?
Long-term satellite observations from NASA POWER (1981–present) and the PVGIS SARAH3 database, assuming a performance ratio of 80%.
Compare with nearby cities
Sydney (4.7) · Melbourne (4.2) · Perth (5.4) · Brisbane (5.4) · Adelaide (4.7) · Gold Coast (5.3) · all cities →