Spain: Electricity production from nuclear sources (% of total)

Key figures

What the numbers say

In 2025, Spain's electricity production from nuclear sources (% of total) fell 0.94 percentage points on 2024 (from 18.94% to 18%).

Across the 30 yearly changes before that (1995 to 2024), the average change was −0.51 percentage points and a typical year strayed about 1.31 percentage points from that (the standard deviation). This year's change was 0.3 standard deviations below that average, so it was an ordinary year: it sits within the range of normal year-to-year movement.

On record, the biggest yearly rise was 2.65 percentage points in 2010 and the biggest yearly fall was 3.25 percentage points in 1997. The numbers show how large and when, not why; for the cause, look at what happened in that country in those years.

From 2016 to 2025 the straight-line trend is downward, about 0.32 percentage points a year. A straight line explains 61% of the movement over 10 observed years.

Worked out from the yearly values above. How the checks work: standard deviation, z-scores and straight-line trends.

How it compares

In 2025, Spain had the 12th highest value of the 19 economies reporting that year. Higher is not always better: for some indicators the lowest value is the one to aim for. See the full ranking.

Closest to Spain in the 2025 ranking

• Korea, Rep. — 8th of 19: 28.72%
• Switzerland — 9th of 19: 27.83%
• Sweden — 10th of 19: 27.19%
• United States — 12th of 19: 17.39%
• Canada — 13th of 19: 13.22%
• United Kingdom — 14th of 19: 12.34%

What this measures

The share of electricity production from nuclear sources of total electricity production. Sources of electricity refer to the inputs used to generate electricity. Nuclear power refers to electricity produced by nuclear power plants.

Limitations: IEA occasionally revises its time series to reflect political changes. For example, the IEA has constructed historical energy statistics for countries of the former Soviet Union. In addition, energy statistics for other countries have undergone continuous changes in coverage or methodology in recent years as more detailed energy accounts have become available. Breaks in series are therefore unavoidable.

Regional and income-group figures are computed by the World Bank as a weighted average using total electricity production as weights.

All 36 values

Electricity production from nuclear sources (% of total) in nearby economies

• Albania — 0% (2021)
• Andorra — 0% (2021)
• Armenia — 30.14% (2024)
• Austria — 0% (2021)
• Azerbaijan — 0% (2021)
• Belarus — 35.84% (2024)
• Belgium — 32.63% (2025)
• Bosnia and Herzegovina — 0% (2021)
• Bulgaria — 40.94% (2024)

More environment data for Spain

• Population in largest city — 6.81 million (2025)
• Population in the largest city (% of urban population) — 17.14% (2025)
• Population in urban agglomerations of more than 1 million — 12.54 million (2025)
• Population in urban agglomerations of more than 1 million (% of total population) — 25.42% (2025)
• Rural population — 9.62 million (2025)
• Rural population (% of total population) — 19.49% (2025)
• Urban population — 39.74 million (2025)
• Urban population (% of total population) — 80.51% (2025)
• Aquaculture production (metric tons) — 246,201 (2024)
• Capture fisheries production (metric tons)

Reading data like this

• Where to find free public data, and how to check it before you trust it — 2 min read
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Questions people ask

What is Spain's electricity production from nuclear sources (% of total)?

18% in 2025, according to the World Bank (World Development Indicators).

How has it changed since 1990?

It is down 17.72 percentage points from 35.72% in 1990. The highest value was 35.75% in 1993 and the lowest 17.91% in 2009.

How does Spain rank?

12th highest of 19 economies with data for 2025.

Is the latest change in electricity production from nuclear sources (% of total) unusual for Spain?

In 2025, Spain's electricity production from nuclear sources (% of total) fell 0.94 percentage points on 2024 (from 18.94% to 18%). Across the 30 yearly changes before that (1995 to 2024), the average change was −0.51 percentage points and a typical year strayed about 1.31 percentage points from that (the standard deviation). This year's change was 0.3 standard deviations below that average, so it was an ordinary year: it sits within the range of normal year-to-year movement.

Source

World Bank, World Development Indicators, indicator EG.ELC.NUCL.ZS, licensed CC BY 4.0. Original source: IEA Energy Statistics Data Browser, International Energy Agency (IEA), uri: https://www.iea.org/data-and-statistics/data-tools/energy-statistics-data-browser, publisher: International Energy Agency (IEA), date accessed: 2025-03-25 Figures are fetched from the World Bank API and refreshed monthly; see the series on data.worldbank.org. The full definition and method are in the World Bank's metadata glossary. Comparisons use the same World Bank release.

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