Bulgaria vs South Africa: Annual change in primary energy from solar
Bulgaria
1.34 terawatt-hours
in 2025
South Africa
1.18 terawatt-hours
in 2025
Bulgaria rank
29th
South Africa rank
31st
Annual change in primary energy from solar over time
- Bulgaria
- South Africa
How they compare
Bulgaria currently reports 1.34 terawatt-hours against 1.18 terawatt-hours in South Africa, a difference of 0.16 terawatt-hours.
That makes Bulgaria's figure about 1.1 times South Africa's.
The two have swapped places 3 times across 60 shared years of data; in 1966 it was South Africa ahead.
Bulgaria ranks 29th and South Africa ranks 31st of 80 countries.
South Africa has averaged higher in every one of the 7 decades both report.
Head to head by decade
| Decade | Bulgaria | South Africa | Difference | Ahead |
|---|---|---|---|---|
| 1960s | 0 terawatt-hours | 0 terawatt-hours | 0 terawatt-hours | — |
| 1970s | 0 terawatt-hours | 0 terawatt-hours | 0 terawatt-hours | — |
| 1980s | 0 terawatt-hours | 0 terawatt-hours | 0 terawatt-hours | — |
| 1990s | 0 terawatt-hours | 0 terawatt-hours | 0 terawatt-hours | — |
| 2000s | 0.0003 terawatt-hours | 0.0023 terawatt-hours | 0.002 terawatt-hours | South Africa |
| 2010s | 0.1414 terawatt-hours | 0.4859 terawatt-hours | 0.3445 terawatt-hours | South Africa |
| 2020s | 0.9018 terawatt-hours | 2.28 terawatt-hours | 1.38 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 solar, Bulgaria or South Africa?
- Bulgaria, at 1.34 terawatt-hours against 1.18 terawatt-hours in South Africa as of 2025.
- What is the difference in annual change in primary energy from solar between Bulgaria and South Africa?
- 0.16 terawatt-hours, with Bulgaria ahead.
- How many years of comparable data are there for Bulgaria and South Africa?
- 60 years are reported by both, from 1966 to 2025.
- How do Bulgaria and South Africa rank globally for annual change in primary energy from solar?
- Bulgaria ranks 29th and South Africa ranks 31st of 80 countries.
- Where does this data come from?
- Energy Institute - Statistical Review of World Energy (2026); Smil (2017) – with major processing by Our World in Data, published as Annual change in primary energy from solar. 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.