INI

Major Energy Sources of the World - INI

Major energy sources of the world are broadly classified into fossil fuels (oil, coal, natural gas), nuclear power, and renewable energy (hydro, wind, solar, etc.). As of 2024, fossil fuels account for approximately 80% of global primary energy, but renewable energy is growing rapidly and is expected to overtake coal as the largest power source in the electricity sector by 2025. Organizations such as the IEA (International Energy Agency) and Ember track the trends of energy transition.

energy fossil fuels renewable energy nuclear power IEA decarbonization energy transition

[item.fossil-fuels]
code=01
slug=fossil-fuels
name=Fossil Fuels
description=Fuel resources formed from ancient organic matter transformed underground over long periods.
category=Primary Energy
share2024_electricity=~60%
share2024_primaryEnergy=~80%
share2024_renewableElectricity=

[item.oil]
code=01-01
slug=oil
name=Oil
description=The world's largest energy source, widely used primarily in the transportation sector.
category=Fossil Fuels
share2024_electricity=
share2024_primaryEnergy=~30%
share2024_renewableElectricity=

[item.coal]
code=01-02
slug=coal
name=Coal
description=Has been used as the largest power source in the electricity sector for over 50 years.
category=Fossil Fuels
share2024_electricity=~35%
share2024_primaryEnergy=~27%
share2024_renewableElectricity=

[item.natural-gas]
code=01-03
slug=natural-gas
name=Natural Gas
description=Shows the strongest demand growth among fossil fuels, used for power generation and industrial fuel.
category=Fossil Fuels
share2024_electricity=~22%
share2024_primaryEnergy=~25%
share2024_renewableElectricity=

[item.nuclear-power]
code=02
slug=nuclear-power
name=Nuclear Power
description=Power generation using nuclear fission reactions, being re-evaluated as a decarbonized power source.
category=Nuclear Power
share2024_electricity=~9%
share2024_primaryEnergy=~5%
share2024_renewableElectricity=

[item.renewable-energy]
code=03
slug=renewable-energy
name=Renewable Energy
description=Energy sources that are continuously replenished in the natural environment, key to a decarbonized society.
category=Renewable Energy
share2024_electricity=~32%
share2024_primaryEnergy=~15%
share2024_renewableElectricity=

[item.hydropower]
code=03-01
slug=hydropower
name=Hydropower
description=The most mature renewable energy, accounting for the largest share of global renewable electricity generation.
category=Renewable Energy
share2024_electricity=~14%
share2024_primaryEnergy=
share2024_renewableElectricity=~44%

[item.wind-power]
code=03-02
slug=wind-power
name=Wind Power
description=Power generation using onshore and offshore wind turbines, with rapidly declining costs.
category=Renewable Energy
share2024_electricity=~8%
share2024_primaryEnergy=
share2024_renewableElectricity=

[item.solar-power]
code=03-03
slug=solar-power
name=Solar Power
description=The fastest-growing energy source, maintaining a pace of doubling every three years.
category=Renewable Energy
share2024_electricity=~7%
share2024_primaryEnergy=
share2024_renewableElectricity=

[item.biomass-energy]
code=03-04
slug=biomass-energy
name=Biomass Energy
description=Energy source utilizing organic matter as fuel, including waste utilization.
category=Renewable Energy
share2024_electricity=~3%
share2024_primaryEnergy=
share2024_renewableElectricity=

[item.geothermal-energy]
code=03-05
slug=geothermal-energy
name=Geothermal Energy
description=A stable renewable energy utilizing heat from within the Earth.
category=Renewable Energy
share2024_electricity=~1%
share2024_primaryEnergy=
share2024_renewableElectricity=