Sri Lanka vs Viet Nam: Annual change in primary energy from solar
Sri Lanka
1.1 terawatt-hours
in 2025
Viet Nam
0.9404 terawatt-hours
in 2025
Sri Lanka rank
37th
Viet Nam rank
40th
Annual change in primary energy from solar over time
- Sri Lanka
- Viet Nam
How they compare
Sri Lanka currently reports 1.1 terawatt-hours against 0.9404 terawatt-hours in Viet Nam, a difference of 0.1596 terawatt-hours.
That makes Sri Lanka's figure about 1.2 times Viet Nam's.
The two have swapped places 5 times across 60 shared years of data; in 1966 it was Viet Nam ahead.
Sri Lanka ranks 37th and Viet Nam ranks 40th of 80 countries.
Across the 7 decades both report, Sri Lanka averaged higher in 1 and Viet Nam in 2.
Head to head by decade
| Decade | Sri Lanka | Viet Nam | Difference | Ahead |
|---|---|---|---|---|
| 1960s | 0 terawatt-hours | 0 terawatt-hours | 0 terawatt-hours | β |
| 1970s | 0 terawatt-hours | 0 terawatt-hours | 0 terawatt-hours | β |
| 1980s | 0 terawatt-hours | 0 terawatt-hours | 0 terawatt-hours | β |
| 1990s | 0 terawatt-hours | 0 terawatt-hours | 0 terawatt-hours | β |
| 2000s | 0.0007 terawatt-hours | 0 terawatt-hours | 0.0007 terawatt-hours | Sri Lanka |
| 2010s | 0.0494 terawatt-hours | 0.4818 terawatt-hours | 0.4324 terawatt-hours | Viet Nam |
| 2020s | 0.4158 terawatt-hours | 4.84 terawatt-hours | 4.42 terawatt-hours | Viet Nam |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher annual change in primary energy from solar, Sri Lanka or Viet Nam?
- Sri Lanka, at 1.1 terawatt-hours against 0.9404 terawatt-hours in Viet Nam as of 2025.
- What is the difference in annual change in primary energy from solar between Sri Lanka and Viet Nam?
- 0.1596 terawatt-hours, with Sri Lanka ahead.
- How many years of comparable data are there for Sri Lanka and Viet Nam?
- 60 years are reported by both, from 1966 to 2025.
- How do Sri Lanka and Viet Nam rank globally for annual change in primary energy from solar?
- Sri Lanka ranks 37th and Viet Nam ranks 40th 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 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.