New Zealand vs South Africa: Annual change in primary energy from hydropower
New Zealand
0.4799 terawatt-hours
in 2025
South Africa
0.7203 terawatt-hours
in 2025
New Zealand rank
21st
South Africa rank
20th
Annual change in primary energy from hydropower over time
- New Zealand
- South Africa
How they compare
South Africa currently reports 0.7203 terawatt-hours against 0.4799 terawatt-hours in New Zealand, a difference of 0.2404 terawatt-hours.
That makes South Africa's figure about 1.5 times New Zealand's.
The two have swapped places 29 times across 60 shared years of data; in 1966 it was New Zealand ahead.
New Zealand ranks 21st and South Africa ranks 20th of 80 countries.
Across the 7 decades both report, New Zealand averaged higher in 6 and South Africa in 1.
Head to head by decade
| Decade | New Zealand | South Africa | Difference | Ahead |
|---|---|---|---|---|
| 1960s | 0.4044 terawatt-hours | -0.004 terawatt-hours | 0.4084 terawatt-hours | New Zealand |
| 1970s | 0.6807 terawatt-hours | 0.1123 terawatt-hours | 0.5684 terawatt-hours | New Zealand |
| 1980s | 0.4115 terawatt-hours | 0.1615 terawatt-hours | 0.25 terawatt-hours | New Zealand |
| 1990s | 0.0361 terawatt-hours | -0.2033 terawatt-hours | 0.2394 terawatt-hours | New Zealand |
| 2000s | 0.1298 terawatt-hours | 0.0726 terawatt-hours | 0.0572 terawatt-hours | New Zealand |
| 2010s | 0.1436 terawatt-hours | -0.0775 terawatt-hours | 0.2212 terawatt-hours | New Zealand |
| 2020s | -0.241 terawatt-hours | 0.1864 terawatt-hours | 0.4274 terawatt-hours | South Africa |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher annual change in primary energy from hydropower, New Zealand or South Africa?
- South Africa, at 0.7203 terawatt-hours against 0.4799 terawatt-hours in New Zealand as of 2025.
- What is the difference in annual change in primary energy from hydropower between New Zealand and South Africa?
- 0.2404 terawatt-hours, with South Africa ahead.
- How many years of comparable data are there for New Zealand and South Africa?
- 60 years are reported by both, from 1966 to 2025.
- How do New Zealand and South Africa rank globally for annual change in primary energy from hydropower?
- New Zealand ranks 21st and South Africa ranks 20th of 80 countries.
- Where does this data come from?
- Energy Institute - Statistical Review of World Energy (2026); Smil (2017) β with major processing by Our World in Data, published as Annual change in primary energy from hydropower. Statizoid refreshes it automatically from the source and publishes the full history for both places.
Individual pages
About this data
Change in total energy supply relative to the previous year, measured in terawatt-hours.