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Saint Helena vs United Kingdom

16 metrics with data for both countries. The solid line is Saint Helena; the dashed grey line is United Kingdom.

Country A · Saint Helena
Country B · United Kingdom

Climate

CO2 emissions

Saint Helena: 0.01 Mt CO2/year · 2024United Kingdom: 312.9 Mt CO2/year · 2024
0200400600197019801990200020102020United Kingdomhigh 2016

Carbon dioxide released each year from burning fossil fuels and industry. The main driver of global warming. Global Carbon Budget via Our World in Data

CO2 emissions per person

Saint Helena: 2.17 t CO2/person/year · 2024United Kingdom: 4.53 t CO2/person/year · 2024
0510197019801990200020102020United Kingdomhigh 2019low 1987

Each person's share of their country's yearly CO2 emissions. A fairer way to compare countries of very different sizes. Global Carbon Budget via Our World in Data

Temperature anomaly

Saint Helena: 0.00 °C vs 1991-2020 · 2025United Kingdom: 0.94 °C vs 1991-2020 · 2025
-2-10119401960198020002020United Kingdomhigh 2024low 1956

How much warmer or cooler a country's year was compared with its 1991-2020 average. Watch the map turn red as you move the slider towards today. Copernicus Climate Change Service (ERA5) via Our World in Data

Methane emissions

Saint Helena: 0.00 Mt CO2e/year · 2024United Kingdom: 43.8 Mt CO2e/year · 2024
0501001501850190019502000United Kingdomhigh 1982

Methane traps around 80 times more heat than CO2 over 20 years. It comes mainly from livestock, rice, landfill and leaky fossil fuel infrastructure. Global Carbon Project / PRIMAP via Our World in Data

All greenhouse gases

Saint Helena: 0.01 Mt CO2e/year · 2024United Kingdom: 390.3 Mt CO2e/year · 2024
05001850190019502000United Kingdomhigh 2016

Every warming gas combined: CO2, methane and nitrous oxide, expressed as CO2-equivalents. Jones et al. / PRIMAP via Our World in Data

Nitrous oxide emissions

Saint Helena: 0.00 Mt CO2e/year · 2024United Kingdom: 28.1 Mt CO2e/year · 2024
020401850190019502000United Kingdomhigh 1946

N2O is nearly 300 times more warming than CO2 and comes mostly from fertilised farmland and livestock. Jones et al. / PRIMAP via Our World in Data

Energy

Energy use per person

Saint Helena: 9,813 kWh/person/year · 2023United Kingdom: 28,016 kWh/person/year · 2024
020k40k19801990200020102020United Kingdomhigh 2019low 1984

How much energy each person uses in a year, across electricity, transport, heating and industry. Energy Institute / Ember via Our World in Data

Solar electricity

Saint Helena: 0.00 % of electricity · 2023United Kingdom: 6.61 % of electricity · 2025
024620002005201020152020United Kingdom

The share of a country's electricity generated from solar panels. The fastest-growing energy source in history. Ember / Energy Institute via Our World in Data

Wind electricity

Saint Helena: 0.00 % of electricity · 2023United Kingdom: 29.4 % of electricity · 2025
010203020002005201020152020United Kingdom

The share of a country's electricity generated from wind turbines, onshore and offshore. Ember / Energy Institute via Our World in Data

Coal electricity

Saint Helena: 0.00 % of electricity · 2023United Kingdom: 0.11 % of electricity · 2025
020406020002005201020152020United Kingdom

The share of electricity still generated by burning coal, the most polluting fuel. The number that must reach zero first. Ember / Energy Institute via Our World in Data

Oil electricity

Saint Helena: 100.0 % of electricity · 2023United Kingdom: 4.37 % of electricity · 2025
05010020002005201020152020United Kingdom

The share of a country's electricity generated by burning oil. Rare on big grids, still common on islands. Ember via Our World in Data

Gas electricity

Saint Helena: 0.00 % of electricity · 2023United Kingdom: 31.1 % of electricity · 2025
0204020002005201020152020United Kingdom

The share of a country's electricity generated from natural gas, the least polluting fossil fuel but still a fossil fuel. Ember via Our World in Data

Water

Safely managed drinking water

Saint Helena: 98.4 % of population · 2024United Kingdom: 99.8 % of population · 2024
0501002005201020152020United Kingdomhigh 2021low 2011

The share of people with safe drinking water at home, available when needed and free from contamination. WHO/UNICEF JMP via Our World in Data

Land & Life

Red List Index

Saint Helena: 0.64 index (1 = species safe) · 2024United Kingdom: 0.97 index (1 = species safe) · 2024
00.51200020102020United Kingdomhigh 2007

Tracks extinction risk across all assessed species. 1 means no species at risk; falling values mean wildlife sliding towards extinction. IUCN / SDG 15.5.1 via Our World in Data

Urban population

Saint Helena: 37.2 % living in cities · 2025United Kingdom: 83.3 % living in cities · 2025
0501960198020002020United Kingdom

The share of people living in towns and cities. Urbanisation shapes energy use, land use and how people experience climate change. UN World Urbanization Prospects via Our World in Data

Pollution

Air pollution (PM2.5)

Saint Helena: 4.10 µg/m³ annual mean · 2024United Kingdom: 8.80 µg/m³ annual mean · 2024
051020002005201020152020United Kingdomhigh 2011low 2001

Average exposure to fine particles small enough to enter the bloodstream. The WHO guideline is 5 µg/m³. World Bank / van Donkelaar et al. via Our World in Data