Annual percentage change in primary energy from hydropower in Iran
Iran: Annual percentage change in primary energy from hydropower was -36.6% in 2025. ◆ Volatile
Annual percentage change in primary energy from hydropower in Iran, 1966–2025
Source: Energy Institute – Statistical Review of World Energy (2026) – with major processing by Our World in Data. Measured in %.
Analysis
Iran recorded -36.6% for annual percentage change in primary energy from hydropower in 2025.
Compared with earlier readings it is down 112.1% on the previous year and down 324.5% over ten years.
Over the whole period, annual percentage change in primary energy from hydropower in Iran peaked at 244.2% in 2019 and was at its lowest, -100.0%, in 2021.
That places Iran 68th out of 71 countries with data for 2025, putting it in the bottom quarter.
The series is highly variable year to year, so single readings are best treated with caution.
Annual percentage change in primary energy from hydropower in Iran, year by year
| Year | % | Change |
|---|---|---|
| 1966 | 7.5% | — |
| 1967 | 7.7% | +2.7% |
| 1968 | 7.6% | -1.3% |
| 1969 | 7.6% | +1.2% |
| 1970 | 7.7% | +0.4% |
| 1971 | 7.5% | -2.5% |
| 1972 | 31.3% | +318.7% |
| 1973 | -15.3% | -148.7% |
| 1974 | 10.1% | -166.3% |
| 1975 | 5.0% | -50.6% |
| 1976 | 11.9% | +136.8% |
| 1977 | 3.3% | -71.8% |
| 1978 | 56.6% | +1595.1% |
| 1979 | -13.3% | -123.5% |
| 1980 | 3.7% | -127.8% |
| 1981 | 9.2% | +148.6% |
| 1982 | 4.9% | -46.3% |
| 1983 | -2.1% | -143.4% |
| 1984 | -6.5% | +203.3% |
| 1985 | 0.8% | -112.6% |
| 1986 | 19.5% | +2292.8% |
| 1987 | 10.9% | -44.3% |
| 1988 | 5.5% | -49.4% |
| 1989 | -18.4% | -433.7% |
| 1990 | 9.6% | -152.5% |
| 1991 | -24.0% | -349.3% |
| 1992 | 64.2% | -366.9% |
| 1993 | 14.4% | -77.5% |
| 1994 | -34.5% | -339.1% |
| 1995 | 20.7% | -159.9% |
| 1996 | 5.9% | -71.5% |
| 1997 | -32.6% | -652.5% |
| 1998 | 26.0% | -179.9% |
| 1999 | -31.3% | -220.3% |
| 2000 | -26.5% | -15.4% |
| 2001 | 9.0% | -134.1% |
| 2002 | 94.4% | +946.4% |
| 2003 | 19.7% | -79.2% |
| 2004 | 24.5% | +24.3% |
| 2005 | 21.1% | -13.8% |
| 2006 | 28.1% | +33.4% |
| 2007 | -3.0% | -110.6% |
| 2008 | -58.6% | +1871.5% |
| 2009 | -9.6% | -83.6% |
| 2010 | 52.5% | -646.1% |
| 2011 | 4.2% | -92.0% |
| 2012 | 17.0% | +303.8% |
| 2013 | 17.0% | -0.3% |
| 2014 | -0.8% | -104.8% |
| 2015 | -8.6% | +952.0% |
| 2016 | 16.4% | -289.7% |
| 2017 | 11.7% | -28.3% |
| 2018 | -42.9% | -465.6% |
| 2019 | 244.2% | -669.2% |
| 2020 | -31.5% | -112.9% |
| 2021 | -100.0% | +217.7% |
| 2023 | 62.9% | -162.9% |
| 2024 | -17.3% | -127.5% |
| 2025 | -36.6% | +112.1% |
Iran compared with similar countries
- Iran's -36.6% is below the median for upper middle income countries, which is 2.4%. (24 countries reporting)
- Iran's -36.6% is below the median for Middle East, North Africa, Afghanistan & Pakistan, which is -11.9%, 3.1× the median. (7 countries reporting)
Biggest year-on-year movements
Years where Annual percentage change in primary energy from hydropower in Iran changed far more than this series normally does. A large move can be a real event or a change in how the figure was measured — the source note below says who published it.
| Year | Change | From | To |
|---|---|---|---|
| 1986 | +2292.8% | 0.8% | 19.5% |
| 2008 | -1871.5% | -3.0% | -58.6% |
| 1978 | +1595.1% | 3.3% | 56.6% |
Averages by decade
| Decade | Average | Lowest | Highest | Years |
|---|---|---|---|---|
| 1960s | 7.6% | 7.5% | 7.7% | 4 |
| 1970s | 10.5% | -15.3% | 56.6% | 10 |
| 1980s | 2.8% | -18.4% | 19.5% | 10 |
| 1990s | 1.8% | -34.5% | 64.2% | 10 |
| 2000s | 9.9% | -58.6% | 94.4% | 10 |
| 2010s | 31.1% | -42.9% | 244.2% | 10 |
| 2020s | -24.5% | -100.0% | 62.9% | 5 |
Countries ranked near Iran
More reference data data for Iran
- Emission Totals - Indirect emissions (N2O) - Manure applied to Soils 3.47 (2050)
- Emission Totals - Indirect emissions (N2O) - Manure left on Pasture 12.01 (2050)
- Emission Totals - Indirect emissions (N2O) - IPCC Agriculture 26.62 (2050)
- Emission Totals - Indirect emissions (N2O) - Crop Residues 1.34 (2050)
- Emission Totals - Indirect emissions (N2O) - Agricultural Soils 26.62 (2050)
- Emission Totals - Emissions (N2O) - Manure applied to Soils 11.62 (2050)
- Emission Totals - Emissions (N2O) - Manure Management 3.84 (2050)
- Emission Totals - Emissions (N2O) - Manure left on Pasture 46.54 (2050)
- Emission Totals - Emissions (N2O) - IPCC Agriculture 109.46 (2050)
- Emission Totals - Emissions (N2O) - Crop Residues 7.3 (2050)
Frequently asked questions
- What is annual percentage change in primary energy from hydropower in Iran?
- Annual percentage change in primary energy from hydropower in Iran was -36.6% in 2025, according to Energy Institute – Statistical Review of World Energy (2026) – with major processing by Our World in Data.
- What is the highest annual percentage change in primary energy from hydropower recorded in Iran?
- The highest recorded value was 244.2% in 2019.
- What is the lowest annual percentage change in primary energy from hydropower recorded in Iran?
- The lowest recorded value was -100.0% in 2021.
- How does Iran rank for annual percentage change in primary energy from hydropower?
- Iran ranks 68th out of 71 countries with data for 2025.
- Is annual percentage change in primary energy from hydropower rising or falling in Iran?
- Over the last ten years it is down 324.5%. The long-run trend across the full record is volatile.
- Where does this Iran data come from?
- The figures come from Energy Institute – Statistical Review of World Energy (2026) – with major processing by Our World in Data, published as part of Annual percentage change in primary energy from hydropower. Statizoid updates them automatically from the source API.
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About this data
Percentage change in total energy supply relative to the previous year.