Iran, Islamic Republic of vs Viet Nam: Annual percentage change in primary energy from coal
Iran, Islamic Republic of
2.0%
in 2025
Viet Nam
2.9%
in 2025
Iran, Islamic Republic of rank
23rd
Viet Nam rank
21st
Annual percentage change in primary energy from coal over time
- Iran, Islamic Republic of
- Viet Nam
How they compare
Viet Nam currently reports 2.9% against 2.0% in Iran, Islamic Republic of, a difference of 0.9%.
That makes Viet Nam's figure about 1.4 times Iran, Islamic Republic of's.
The two have swapped places 29 times across 60 shared years of data; in 1966 it was Iran, Islamic Republic of ahead.
Iran, Islamic Republic of ranks 23rd and Viet Nam ranks 21st of 78 countries.
Across the 7 decades both report, Iran, Islamic Republic of averaged higher in 3 and Viet Nam in 4.
Head to head by decade
| Decade | Iran, Islamic Republic of | Viet Nam | Difference | Ahead |
|---|---|---|---|---|
| 1960s | 10.2% | 8.0% | 2.1% | Iran, Islamic Republic of |
| 1970s | 20.5% | 9.8% | 10.7% | Iran, Islamic Republic of |
| 1980s | -3.3% | 0.3% | 3.6% | Viet Nam |
| 1990s | 6.7% | 4.7% | 2.0% | Iran, Islamic Republic of |
| 2000s | -3.1% | 16.1% | 19.2% | Viet Nam |
| 2010s | 9.6% | 17.0% | 7.4% | Viet Nam |
| 2020s | 0.3% | 3.8% | 3.5% | Viet Nam |
Averages of every year both report within each decade.
Frequently asked questions
- Which has higher annual percentage change in primary energy from coal, Iran, Islamic Republic of or Viet Nam?
- Viet Nam, at 2.9% against 2.0% in Iran, Islamic Republic of as of 2025.
- What is the difference in annual percentage change in primary energy from coal between Iran, Islamic Republic of and Viet Nam?
- 0.9%, with Viet Nam ahead.
- How many years of comparable data are there for Iran, Islamic Republic of and Viet Nam?
- 60 years are reported by both, from 1966 to 2025.
- How do Iran, Islamic Republic of and Viet Nam rank globally for annual percentage change in primary energy from coal?
- Iran, Islamic Republic of ranks 23rd and Viet Nam ranks 21st of 78 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 percentage change in primary energy from coal. Statizoid refreshes it automatically from the source and publishes the full history for both places.
Individual pages
About this data
Percentage change in total energy supply relative to the previous year.