The release of the annual World Energy Outlook coincided with UN climate negotiations in Brazil this week, where global leaders are calling for ways to curb the planet’s warming
Electricity demand will rise much faster than overall energy growth in the coming decades, underscoring the need for diversified energy sources, according to an analysis released Wednesday.
The report by the International Energy Agency said renewable energy, led by solar power, will grow faster than any other major source in the next few years and that coal and oil demand will likely peak globally by the end of this decade. The report noted that many natural gas projects were approved in 2025, due to changes in US policy, indicating worldwide supply will rise even as questions remain about how it will be used. Meanwhile, global nuclear power capacity is set to increase by at least a third by 2035 after being stagnant for years.
The release of the annual World Energy Outlook coincided with UN climate negotiations in Brazil this week, where global leaders are calling for ways to curb the planet’s warming.
Regional dynamics The IEA says building greater resilience in energy systems is especially important as data centres, heating and cooling, electrification and more drive energy demand. Investment in data centres is expected to reach USD 580 billion this year, exceeding investment in the oil supply, according to the report.
Growing economies, including India and nations in Southeast Asia, the Middle East, Africa and Latin America, will increasingly shape energy market dynamics in the years, the IEA said, noting their potential for solar power.
China, meanwhile, has accounted for half of the global growth in demand for oil and gas, and more than half for electricity, since 2010.
In a break from the trend of the past decade, the increase in electricity consumption is no longer limited to emerging and developing economies, IEA Executive Director Fatih Birol said in a release. Birol said that electricity use is also rising in advanced economies.
Nations are grappling with meeting demand while preparing for the risks brought on by the planet’s warming. The IEA says the world is falling short on universal energy access and climate change goals. Around 730 million people still live without electricity, according to the IEA, and despite progress, nearly one-quarter of the global population still relies on inefficient cooking methods that hurt their health or the environment. 2024 was also the hottest year on record.
Nations should diversify their energy sources and cooperate to expand supply chains for critical minerals, the IEA said. This also includes making quick improvements to the grid, energy storage and broader infrastructure.
When we look at the history of the energy world in recent decades, there is no other time when energy security tensions have applied to so many fuels and technologies at once, Birol said. With energy security front and centre for many governments, their responses need to consider the synergies and trade-offs that can arise with other policy goals on affordability, access, competitiveness and climate change.
Global reaction Wednesday’s edition of the yearly report is the first released since the start of President Donald Trump’s second term. Trump’s administration has, for a second time, opted out of the Paris agreement, rolled back dozens of climate regulations, slashed federal support for renewable energies such as wind and solar power and is reversing the endangerment finding that sits at the core of US climate policy.
Trump has pledged his support instead to the fossil fuel industry, investing in coal and loosening restrictions on pollution.
But energy analysts said the shift to clean power is happening regardless of climate policy around the world.
The evidence on the ground is overwhelming. EV sales are taking off in many emerging countries, and solar is permeating even through the Middle East, said Dave Jones, chief analyst at global energy think tank Ember. “Renewables and electrification will dominate the future.
Maria Pastukhova, energy transition program lead at climate change think tank E3G, said the report makes the choices for the global energy system and the global economy unambiguous.
If countries want to grow their economies and protect their citizens from roller-coaster energy prices, they need to focus relentlessly on energy efficiency and the (decarbonisation) of energy demand, Pastukhova said.
Others, however, were critical. Ben Backwell, CEO of the Global Wind Energy Council, said the outlook does not fully capture the momentum in renewables, and that it should have emphasised the trajectory for renewable energy is accelerating, driven by the decreasing cost of the technologies, strong policy support and the move toward electrification.
We’re accelerating, he added. You can see it all around the world, and we can see it in our numbers for last year, but also in our numbers for the first half of this year. It looks very, very exciting, both for wind and for solar, in fact, and for next year, even more so.
