Everything Energy

Since the mid-20th century, scientists and engineers around the world have been working to harness the potential of fusion energy. Driven by the knowledge that success could revolutionise the energy system, they have pursued fusion’s tantalising potential to provide abundant around-the-clock electricity with minimal fuel inputs, no direct emissions and very little radioactive waste.

Recently, momentum behind the sector has been building. Government-led research programmes have achieved a series of technological milestones, and investment from the private sector has surged. Together, these developments have supported growing interest in the sector – although significant challenges still need to be overcome to make fusion power plants technically and economically feasible.

In this episode, we look at where fusion energy stands today and where it could be headed, based on interviews with four experts from across the industry: Alain Bécoulet, ITER’s Chief Scientist; Simon Bennett, an IEA analyst focused on energy innovation; Jennifer Ganten, the Chief Global Affairs Officer at Commonwealth Fusion Systems; and David Maisonnier, Chair of the IEA’s Fusion Power Coordinating Committee. They explain how fusion works, discuss the sector’s evolution, and outline the remaining questions that need to be answered before a power plant running on fusion energy is connected to the grid. 

Around the world, the price of diesel is at or near all-time highs, with major implications for shipping, agriculture and the broader economy.

In this episode, we speak with IEA experts David Martin and Talya Vatman who explain why diesel prices have risen more sharply than those of gasoline and crude oil – taking stock of the impacts from the war in the Middle East, Ukraine’s attacks on Russian refineries, and limited capacity across the refining sector globally. They also discuss how the situation could evolve in the coming months.

Invented at the turn of the 20th century to control humidity at a New York printing plant, the air conditioner has reshaped the economies and societies that have had access to it. Today, more than 1.5 billion AC units are in use around the world – and as incomes and temperatures rise, demand continues to grow rapidly.

But there are challenges associated with this air conditioning boom. If a city’s residents all turn on their ACs at the same time, the resulting surge in electricity consumption can strain power grids. Growing electricity demand from air conditioning also contributes to higher energy sector emissions. That’s why innovators are working to improve cooling technologies, be it by making air conditioners more efficient or by developing entirely new systems to help people stay cool.

This is the final episode in a three-part miniseries on energy innovation stories that changed the world. It is hosted by Dan Hewitt and produced by Dan Hewitt and Julia Horowitz. Guests include IEA analysts Chiara Delmastro and Simon Bennett; Eindhoven University of Technology Professor Daniel Barber; Blue Frontier Co-founder and CEO Daniel Betts; and University of Cambridge Professor and Barocal CEO Xavier Moya.

Technological advances in drilling have had a profound impact on our economies and societies, delivering access to vast energy resources underground.  The first commercial oil well in 1859 paved the way for the modern oil industry, and more recent breakthroughs have repeatedly reshaped global energy dynamics. 

Innovation in drilling technologies continues today. Some of these technologies have helped lay the basis for next-generation geothermal energy projects, which could unlock heat as a reliable and low-emissions energy resource in many parts of the world.

This episode is the second in a three-part miniseries on energy innovation stories that changed the world. It is hosted by Dan Hewitt and produced by Dan Hewitt and Julia Horowitz. Guests include IEA energy analyst Courtney Turich; Sjoerd Brands, technical manager in Europe for well construction at SLB; Iain Hutchison, Chief Executive Officer of Merlin Energy; and Kristie McLin, Principal Investigator of the Utah FORGE project.

Today, solar PV is the fastest-growing energy source in the world. Yet that would not have been possible without a history of innovation spanning decades. From the breakthrough discovery of a practical silicon solar cell at a US phone company in the 1950s to the rapid scaling up of solar panel manufacturing in China in the 2000s, these advances – along with supportive policies – have made solar energy cost competitive globally. And innovation could now reshape the sector once again, helping address emerging challenges such as grid integration and supply chain concentration.

This episode is the first in a three-part miniseries on energy innovation stories that changed the world. It is hosted by Dan Hewitt and produced by Dan Hewitt and Julia Horowitz. Guests include IEA energy technology analyst Simon Bennett; Sekisui Chemical Co. group leader Takeru Bessho; Qcells Global Chief Technology Officer Danielle Merfeld; and Greg Nemet, professor at the University of Wisconsin-Madison and author of the book “How Solar Energy Became Cheap.”

Amid the disruptions resulting from the conflict in the Middle East, energy systems have come under significant pressure – compounded, in some parts of the world, by record-breaking heatwaves. But one of the most effective tools for easing these strains – and energy costs – remains underutilised.

In this episode, we speak with Brian Motherway, who leads the IEA’s work on energy efficiency and affordability. He explains why we often fail to make use of the world’s “first fuel” – energy efficiency – and discusses practical steps governments can take to help consumers save energy and money, without compromising economic growth or their quality of life.

What did the global energy landscape look like just before the outbreak of the war in the Middle East sent shockwaves through energy markets in March? What were the major trends – and what might they tell us about what comes next?

In this episode, IEA energy analyst Alex Martinos discusses the findings from the Global Energy Review 2026, which provides a comprehensive assessment of global energy trends in 2025. He highlights important developments across fuels, technologies, the electricity sector and emissions, along with the potential implications for the current energy context.

Around the world, billions of people use liquefied petroleum gas, or LPG, to cook their meals. Today, many of them are under substantial pressure, with global LPG supplies severely disrupted by the conflict in the Middle East. In 2025, 30% of all LPG exported by sea transited through the Strait of Hormuz – a route that’s seen shipping slow dramatically since the end of February.

In this episode, IEA energy analysts Marina Petrelli and Arthur Rogé discuss the latest developments in LPG markets – and what price increases and supply shortages have meant for some of the world’s most vulnerable communities. They also speak about the impact of the market turbulence on expanding clean cooking access, particularly in sub-Saharan Africa.

As the energy crisis caused by disruptions to oil and gas flows through the Strait of Hormuz continues to unfold, how is it shifting energy investment priorities around the world?

In this episode, two IEA experts – Energy Investment Unit head Cecilia Tam and energy investment analyst Kirsten Smith – dig into this question based on new insights from the World Energy Investment 2026 report. With energy security concerns front and centre – and with many countries increasingly looking to meet demand with domestic energy sources – they discuss the implications across different sectors, including oil, gas, coal, nuclear, renewables and electricity. They also speak about how investment in energy efficiency is evolving and how the crisis could affect the cost of capital for energy projects.

Hydropower is the third largest source of power generation globally, producing roughly as much electricity as solar and wind combined. Yet despite its huge role in electricity systems around the world, it is often left out of conversations on energy. 

In this episode, IEA renewable energy analyst Yasmina Abdelilah explains how the role of hydropower in electricity systems has evolved in recent decades. With electricity demand surging around the world, she highlights the benefits hydropower could deliver across both advanced and emerging economies and discusses what is needed to overcome key barriers.