Energy Transition

These charts show how little the global energy supply has changed since the 1970s

Reflecting on the changes in the global energy supply mix in the past 50 years.

Reflecting on the changes in the global energy supply mix in the past 50 years. Image: REUTERS/Wolfgang Rattay

Andrea Willige
Senior Writer, Forum Agenda
Our Impact
What's the World Economic Forum doing to accelerate action on Energy Transition?
The Big Picture
Explore and monitor how Energy Transition is affecting economies, industries and global issues
A hand holding a looking glass by a lake
Crowdsource Innovation
Get involved with our crowdsourced digital platform to deliver impact at scale
Stay up to date:

Energy Transition

This article is part of: Sustainable Development Impact Summit
  • New statistics from the IEA show that our global energy supply mix has not changed as much as the global effort at decarbonization might suggest.
  • Natural gas and nuclear energy have grown in importance.
  • Renewables continue to have a very low share in the global energy supply.
  • 2020 could be the turning point for our climate.

Concorde made its first non-stop transatlantic flight, the Watergate scandal was raging, the US withdrew from Viet Nam, and an oil crisis set petrol prices soaring.

The year was 1973. You might think that a lot has changed since then.

Have you read?

But when it comes to the energy supply, things look surprisingly similar. New statistics from the International Energy Agency (IEA) show little has changed with our global energy supply mix in 47 years – especially when it comes to the reliance on fossil fuels.

The share of power sources in the global energy supply in 1973.
The share of power sources in the global energy supply in 1973. Image: IEA
The share of power sources in the global energy supply in 2018.
The share of power sources in the global energy supply in 2018. Image: IEA

The biggest difference between the global energy supply in 1973 and today is that the world relies less on oil, while the supply of coal and natural gas has increased in direct comparison.

In fact, global coal supply and demand has been rising over the past few decades, with Asia-Pacific as a major driver. From less than half of world demand and production in 2000, the region accounted for three-quarters of demand in 2018 as well as providing 73% of coal supplies.

Rise of natural gas in global energy supply mix

The increase in natural gas in the energy supply mix by 6.8 percentage points may point to its increasing role as a coal replacement, for example in power generation and heating, and as a “transition” fuel to lower greenhouse gas emissions. On a lifecycle basis, natural gas gives off between a third to 50% less carbon dioxide when burned compared to coal, according to the IEA.

In terms of other “greener” forms of energy, nuclear power increased by more than eight percentage points while biofuels and waste grew by four percentage points.

Small share for renewable energy

The total global energy supply by source.
The total global energy supply by source. Image: IEA

The share of other sources – including renewables such as hydro, wind and solar power – has grown, but relative to fossil fuels, their overall share in the global energy supply mix remains small.

The charts underline the scope of the task ahead in terms of decarbonizing and reaching net-zero emissions by 2050.


What is the World Economic Forum’s Sustainable Development Impact summit?

Policies in support of this goal are being put in place in many parts of the world – ranging from promoting electrification through renewable energy sources to boosting the use of hydrogen and deploying carbon-capture technology.

In Europe, which has been a leader in the transition to renewables, the first half of 2020 saw renewables generate more electricity to residential properties and businesses than fossil fuels for the first time, according to climate think tank Ember. More than a fifth of Europe’s energy came from solar panels and wind turbines, with Denmark, Ireland and Germany leading the field.


What's the World Economic Forum doing about the transition to clean energy?

A ‘Great Reset’ for the climate

The dip in energy demand following the coronavirus lockdowns could provide a starting point for much stronger departure from past trends.

The “Great Reset”, as Professor Klaus Schwab, Founder and Executive Chairman of the World Economic Forum, has called it, presents an opportunity to avoid reverting to the pre-COVID-19 status quo, and tackle the climate catastrophe much more proactively.

The expected 6% dip in energy demand and 8% drop in global CO2 emissions that the IEA is anticipating for 2020 could be the decisive turning point for the future of the global energy supply and our planet.

Don't miss any update on this topic

Create a free account and access your personalized content collection with our latest publications and analyses.

Sign up for free

License and Republishing

World Economic Forum articles may be republished in accordance with the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International Public License, and in accordance with our Terms of Use.

The views expressed in this article are those of the author alone and not the World Economic Forum.

Related topics:
Energy TransitionNature and BiodiversityClimate ActionForum Institutional
World Economic Forum logo
Global Agenda

The Agenda Weekly

A weekly update of the most important issues driving the global agenda

Subscribe today

You can unsubscribe at any time using the link in our emails. For more details, review our privacy policy.

What is needed for inclusive and sustainable global economic growth? Four leaders share their thoughts 

Liam Coleman

May 24, 2024

About Us



Partners & Members

  • Join Us

Language Editions

Privacy Policy & Terms of Service

© 2024 World Economic Forum